Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Modular – US Modular, US Segment [Member] Modular, US Segment [Member] Modular – Other North America Modular, Other North America Segment [Member] Modular, Other North America Segment [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, beginning of period Goodwill Acquisition of a business Goodwill, Acquired During Period Changes to preliminary purchase price allocations Goodwill, Purchase Accounting Adjustments Effect of movements in foreign exchange rates Goodwill, Foreign Currency Translation Gain (Loss) Impairment losses Goodwill, Impairment Loss Goodwill, end of period Discontinued Operations and Disposal Groups [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Remote accommodations Remote Accommodations Business [Member] Remote Accommodations Business [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations Discontinued Operations [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Remote accommodations revenue Disposal Group, Including Discontinued Operation, Revenue Remote accommodations costs of leasing and services Disposal Group, Including Discontinued Operation, Cost Of Leases And Services Disposal Group, Including Discontinued Operation, Cost Of Leases And Services Depreciation of rental equipment Disposal Group, Including Discontinued Operation, Cost of Sales, Depreciation Disposal Group, Including Discontinued Operation, Cost of Sales, Depreciation Gross profit Disposal Group, Including Discontinued Operation, Gross Profit (Loss) Selling, general and administrative expenses Disposal Group, Including Discontinued Operation, General and Administrative Expense Other depreciation and amortization Disposal Group, Including Discontinued Operation, Other Depreciation and Amortization Disposal Group, Including Discontinued Operation, Other Depreciation and Amortization Restructuring costs Disposal Group, Including Discontinued Operation, Restructuring Costs Disposal Group, Including Discontinued Operation, Restructuring Costs Other income, net Disposal Group, Including Discontinued Operation, Other Income Operating profit Disposal Group, Including Discontinued Operation, Operating Income (Loss) Interest expense Disposal Group, Including Discontinued Operation, Interest Expense Income from discontinued operations, before income tax Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax expense Discontinued Operation, Tax Effect of Discontinued Operation Income from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Statement of Cash Flows [Abstract] Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Adjustments for non-cash items: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation And Amortization, Excluding Amortization Of Debt Issuance Costs And Discounts Depreciation And Amortization, Excluding Amortization Of Debt Issuance Costs And Discounts Provision for doubtful accounts Provision for Doubtful Accounts Gain on sale of rental equipment and other property, plant and equipment Gain (Loss) on Disposition of Assets Interest receivable capitalized into notes due from affiliates Interest Costs Capitalized Adjustment Amortization of debt discounts and debt issuance costs Amortization of Debt Issuance Costs and Discounts Share based compensation expense Share-based Compensation Deferred income tax benefit Deferred Income Taxes and Tax Credits Foreign currency adjustments Foreign Currency Transaction Gain (Loss), before Tax Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Trade receivables Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Accrued interest payable Increase (Decrease) in Interest Payable, Net Accounts payable and other accrued liabilities Increase (Decrease) In Accounts Payable And Other Accrued Liabilities Increase (Decrease) In Accounts Payable And Other Accrued Liabilities Deferred revenue and customer deposits Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisition of a business Payments to Acquire Businesses, Gross Proceeds from sale of rental equipment Proceeds from Sale of Equipment on Lease Proceeds from Sale of Equipment on Lease Purchase of rental equipment Payments to Acquire Equipment on Lease Lending on notes due from affiliates Payments to Fund Long-term Loans to Related Parties Proceeds from the sale of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Receipts from borrowings Proceeds From Issuance Of Long-Term Debt, Excluding Related Party Debt Proceeds From Issuance Of Long-Term Debt, Excluding Related Party Debt Receipts on borrowings from notes due to affiliates Proceeds from Related Party Debt Payment of financing costs Payments of Financing Costs Repayment of borrowings Repayments of Long-term Debt, Excluding Related Party Debt Repayments of Long-term Debt, Excluding Related Party Debt Principal payments on capital lease obligations Repayments of Long-term Capital Lease Obligations Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at the beginning of the period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at the end of the period Supplemental Cash Flow Information: Supplemental Cash Flow Elements [Abstract] Interest paid Interest Paid Income taxes paid, net of refunds received Income Taxes Paid, Net Capital expenditures accrued or payable Capital Expenditures Incurred but Not yet Paid Earnings Per Share [Abstract] Loss Per Share Earnings Per Share [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Letter of Credit Letter of Credit [Member] Swingline Loans Bridge Loan [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] Senior Notes Senior Notes [Member] Capital Leases and Other Financing Obligations Capital Leases and Other Financing Obligations [Member] Capital Leases and Other Financing Obligations [Member] Capital Lease Obligations Capital Lease Obligations [Member] Sale Leaseback Transaction Financing Obligation [Member] Financing Obligation [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Any Time Before November 29, 2019 Debt Instrument, Redemption, Period One [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Former Algeco Group Revolver Algeco Group Facility Due in 2018 [Member] Algeco Group Facility Due in 2018 [Member] Former Algeco Group Revolver Denominated in USD Algeco Group Facility Denominated in USD Due in 2018 [Member] Algeco Group Facility Denominated in USD Due in 2018 [Member] Former Algeco Group Revolver Denominated in CAD Algeco Group Facility Denominated in CAD Due in 2018 [Member] Algeco Group Facility Denominated in CAD Due in 2018 [Member] ABL Facility Asset Based Lending Facility Due 2022 [Member] Asset Based Lending Facility Due 2022 [Member] US ABL Facility US Asset Based Liability Facility Due 2022 [Member] US Asset Based Liability Facility Due 2022 [Member] Canadian ABL Facility Canadian Asset Based Liability Facility Due 2022 [Member] Canadian Asset Based Liability Facility Due 2022 [Member] Senior secured notes Senior Secured Notes Due December 2022 [Member] Senior Secured Notes Due December 2022 [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Redemption Option [Axis] Redemption Option [Axis] Redemption Option [Axis] Redemption Option [Domain] Redemption Option [Domain] [Domain] for Redemption Option [Axis] 100% of Principal Redemption Option One [Member] Redemption Option One [Member] 40% of Principal Redemption Option Two [Member] Redemption Option Two [Member] 10% of Principal Redemption Option Three [Member] Redemption Option Three [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliates Affiliated Entity [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum aggregate availability Line of Credit Facility, Maximum Borrowing Capacity Interest expense Interest Expense, Long-term Debt Accordion feature Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Applicable margin Debt Instrument, Basis Spread on Variable Rate Applicable margin, step down Debt Instrument, Basis Spread on Variable Rate, Step Down Debt Instrument, Basis Spread on Variable Rate, Step Down Applicable margin, step up Debt Instrument, Basis Spread on Variable Rate, Step Up Debt Instrument, Basis Spread on Variable Rate, Step Up Commitment fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Weighted average interest rate for borrowings Debt, Weighted Average Interest Rate Percentage of net book value of accounts receivable used in determining borrowing capacity Debt Instrument, Percentage Of Net Book Value of Accounts Receivable Used In Determining Borrowing Capacity Debt Instrument, Percentage Of Net Book Value of Accounts Receivable Used In Determining Borrowing Capacity Percentage of net book value of eligible rental equipment used in determining borrowing capacity Debt Instrument, Percentage Of Net Book Value Of Eligible Rental Equipment Used In Determining Borrowing Capacity Debt Instrument, Percentage Of Net Book Value Of Eligible Rental Equipment Used In Determining Borrowing Capacity Percentage of net orderly liquidation value of eligible rental equipment used in determining borrowing capacity Debt Instrument, Percentage Of Net Orderly Liquidation Value Of Eligible Rental Equipment Used In Determining Borrowing Capacity Debt Instrument, Percentage Of Net Orderly Liquidation Value Of Eligible Rental Equipment Used In Determining Borrowing Capacity Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Letters of credit amount outstanding Letters of Credit Outstanding, Amount Minimum fixed charge ratio Debt Instrument, Covenant, Fixed Charge Ratio, Minimum Debt Instrument, Covenant, Fixed Charge Ratio, Minimum Maximum total net leverage ratio Debt Instrument, Covenant, Leverage Ratio, Maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Excess availability under facility to trigger covenant Debt Instrument, Covenant, Remaining Borrowing Capacity, Minimum Debt Instrument, Covenant, Remaining Borrowing Capacity, Minimum Excess availability as a percentage of the line cap to trigger covenant Debt Instrument, Covenant, Borrowings Under Maximum Borrowing Capacity, Percentage, Maximum Debt Instrument, Covenant, Borrowings Under Maximum Borrowing Capacity, Percentage, Maximum Outstanding principal Long-term Debt, Gross Debt issuance costs and debt discount Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt, face amount Debt Instrument, Face Amount Interest rate Debt Instrument, Interest Rate, Stated Percentage Redemption Price Debt Instrument, Redemption Price, Percentage Make whole premium percentage of outstanding principal Debt Instrument, Make Whole Premium, Percentage Of Outstanding Principal Debt Instrument, Make Whole Premium, Percentage Of Outstanding Principal Make whole premium basis spread on variable rate Debt Instrument, Make Whole Premium, Basis Spread On Variable Rate Debt Instrument, Make Whole Premium, Basis Spread On Variable Rate Redemption percentage of aggregate principal amount Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Unamortized debt issuance costs Debt Issuance Costs, Net Capital lease obligations Capital Lease Obligations Agreement term Debt Instrument, Term Implicit interest rate Debt Instrument, Interest Rate, Effective Percentage Interest expense on notes due to affiliates Interest Expense, Related Party Interest income for notes from affiliates Interest Income, Related Party Segment Reporting [Abstract] Number of business lines Number Of Business Lines Number Of Business Lines Number of operating segments Number of Operating Segments Statement of Comprehensive Income [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment, net of income tax expense of $148 and $156 for the three months ended March 31, 2018 and 2017, respectively Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss attributable to non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Total comprehensive loss attributable to WSC Comprehensive Income (Loss), Net of Tax, Attributable to Parent Number of Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Ending balance (in shares) Fully vested and exercisable options, end of year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted-Average Exercise Price per Share ($) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning balance (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Ending balance (in USD per share) Fully vested and exercisable options, end of year (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Segment Reporting Segment Reporting Disclosure [Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Tyson Onsite Tyson Onsite [Member] Tyson Onsite [Member] Acton Mobile Holdings LLC Acton Mobile Holdings LLC [Member] Acton Mobile Holdings LLC [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Adjustment Restatement Adjustment [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Consideration Business Combination, Consideration Transferred Cash acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Rental fleet acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Subject to or Available for Operating Lease, Net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Subject to or Available for Operating Lease, Net Goodwill Percentage of issued and outstanding ownership interests acquired Business Acquisition, Percentage of Voting Interests Acquired Cash purchase price Integration costs Business Combination, Integration Related Costs Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities Fair Value Disclosures [Abstract] Carrying Amounts and Fair Values of Financial Assets and Liabilities Fair Value, by Balance Sheet Grouping [Table Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Director Director [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Algeco Global Algeco Global [Member] Algeco Global [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Agreement term Related Party Transactions, Period of Agreement Related Party Transactions, Period of Agreement Receivables due from affiliates Accounts Receivable, Related Parties, Current Amounts due to affiliates Due to Related Parties, Excluding Interest Payable, Current Due to Related Parties, Excluding Interest Payable, Current Purchases from affiliates Related Party Transaction, Purchases from Related Party Professional fees to affiliates Related Party Transaction, Expenses from Transactions with Related Party Schedule of Related Parties Schedule of Related Party Transactions [Table Text Block] Accounting Policies [Abstract] Percentage ownership by company Noncontrolling Interest, Ownership Percentage by Parent Percentage ownership by TDR Capital LLP Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Provisional tax benefit from remeasurement of deferred tax liabilities Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax Benefit Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax Benefit Provisional tax expense from the deemed repatriation of foreign earnings Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Reclassification from accumulated other comprehensive income to retained earnings from adoption of ASU 2018-02 Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect Business Acquisition, Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Major Property Class [Axis] Major Property Class [Axis] Major Property Class [Domain] Major Property Class [Domain] Modular units and portable storage Modular Space and Portable Storage [Member] Modular Space and Portable Storage [Member] Value added products and services Value-added Products and Services [Member] Value-added Products and Services [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Total rental equipment Property Subject to or Available for Operating Lease, Gross Less: accumulated depreciation Property Subject to or Available for Operating Lease, Accumulated Depreciation Rental equipment, net Property Subject to or Available for Operating Lease, Net Insurance proceeds Proceeds from Insurance Settlement, Investing Activities Gain on insurance proceeds Insured Event, Gain (Loss) Remote accommodations revenue: Disposal Group, Including Discontinued Operation, Revenue [Abstract] Disposal Group, Including Discontinued Operation, Revenue [Abstract] Lease revenue Disposal Group, Including Discontinued Operation, Rental Income Service revenue Disposal Group, Including Discontinued Operation, Service Revenue Disposal Group, Including Discontinued Operation, Service Revenue Total remote accommodations revenue Remote accommodation costs: Disposal Group, Including Discontinued Operation, Cost of Sales [Abstract] Disposal Group, Including Discontinued Operation, Cost of Sales [Abstract] Cost of leases Disposal Group, Including Discontinued Operation, Cost of Leases Disposal Group, Including Discontinued Operation, Cost of Leases Cost of services Disposal Group, Including Discontinued Operation, Cost of Services Disposal Group, Including Discontinued Operation, Cost of Services Total remote accommodations costs Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Long-term Debt Long-term Debt and Capital Lease Obligations [Member] Long-term Debt and Capital Lease Obligations [Member] Other Non-current Assets Other Noncurrent Assets [Member] Debt Long-term Debt Capital lease and other financing obligations Total debt Long-term Debt and Capital Lease Obligations, Including Current Maturities Less: current portion of long-term debt Long-term Debt and Capital Lease Obligations, Current Total long-term debt Long-term Debt and Capital Lease Obligations Outstanding borrowing Debt issuance costs Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate & Other Corporate And Eliminations [Member] Corporate And Eliminations [Member] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] New units New Units [Member] New Units [Member] Rental units Rental Units [Member] Rental Units [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenues: Revenues [Abstract] Leasing and services revenue: Sales Revenue, Services, Net [Abstract] Modular leasing Operating Leases, Income Statement, Lease Revenue Modular delivery and installation Sales Revenue, Services, Net Sales: Sales Revenue, Goods, Net [Abstract] Sales Sales Revenue, Goods, Net Total revenues Revenues Costs: Cost of Goods and Services Sold [Abstract] Cost of leasing and services: Cost of Services [Abstract] Modular leasing Direct Costs of Leased and Rented Property or Equipment Modular delivery and installation Cost of Services Costs of sales: Cost of Goods Sold [Abstract] Cost of sales Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization Depreciation of rental equipment Cost of Goods Sold, Depreciation Gross Profit Gross Profit Adjusted EBITDA Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Adjusted Earnings Before Interest, Taxes, Depreciation, And Amortization Other selected data: Other Costs and Disclosures [Abstract] Selling, general and administrative expense Selling, General and Administrative Expense Other depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Capital expenditures for rental fleet Property Subject to or Available for Operating Lease, Capital Expenditures Property Subject to or Available for Operating Lease, Capital Expenditures Goodwill Goodwill Disclosure [Text Block] Related Party [Abstract] Related Party [Abstract] Leasing revenue from related parties Related Party Transaction, Operating Leases, Income Statement, Lease Revenue Related Party Transaction, Operating Leases, Income Statement, Lease Revenue Management fees and recharge income on transactions with affiliates Related Party Transaction, Management Fees and Recharge Income (Expenses) from Transactions with Related Party Related Party Transaction, Management Fees and Recharge Income (Expenses) from Transactions with Related Party Interest income on notes due from affiliates Total related party expenses, net Related Party Transaction, Income (Expenses) from Transactions with Related Party, Net Related Party Transaction, Income (Expenses) from Transactions with Related Party, Net Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Notes Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Debt Long-term Debt, Fair Value Total Financial Liabilities Fair Value Disclosure Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance (in shares) Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning balance (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Forfeited (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending balance (in USD per share) Restructuring and Related Activities [Abstract] Summary of Activities in the Restructuring Accruals Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Stock Common Class A [Member] Class B Common Stock Common Class B [Member] Statement [Line Items] Statement [Line Items] Trade receivables, allowance Allowance for Doubtful Accounts Receivable, Current Common stock par value (in USD per share) Common Stock, Par or Stated Value Per Share Common stock authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Common Stock, Shares, Issued Common stock outstanding (in shares) Common Stock, Shares, Outstanding Assets Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value from Continuing Operations Cash and Cash Equivalents, at Carrying Value from Continuing Operations Trade receivables, net of allowances for doubtful accounts at March 31, 2018 and December 31, 2017 of $5,659 and $4,845, respectively Accounts Receivable, Net, Current Inventories Inventory, Net Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Rental equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other non-current assets Other Assets, Noncurrent Total long-term assets Assets, Noncurrent Total assets Assets Liabilities Liabilities [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued Liabilities, Current Accrued interest Interest Payable, Current Deferred revenue and customer deposits Deferred Revenue And Customer Deposits, Current Deferred Revenue And Customer Deposits, Current Current portion of long-term debt Total current liabilities Liabilities, Current Long-term debt Deferred tax liabilities Deferred Income Tax Liabilities, Net Deferred revenue and customer deposits Deferred Revenue And Customer Deposits, Noncurrent Deferred Revenue And Customer Deposits, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Long-term liabilities Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (see Note 13) Commitments and Contingencies Common stock Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total shareholders' equity Stockholders' Equity Attributable to Parent Non-controlling interest Stockholders' Equity Attributable to Noncontrolling Interest Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Equity [Abstract] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Non-Controlling Interest Noncontrolling Interest [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance at December 31, 2017 Net loss attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Balance at March 31, 2018 Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of goodwill activity Schedule of Goodwill [Table Text Block] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Impact of fair value mark-ups/useful life changes on depreciation Fair Value and Useful Lives Impact on Depreciation [Member] Fair Value and Useful Lives Impact on Depreciation [Member] Intangible asset amortization Intangible Asset Amortization [Member] Intangible Asset Amortization [Member] Interest expense Interest Expense Adjustment [Member] Interest Expense Adjustment [Member] Elimination of historic Acton interest Elimination of Historic Interest Expense Adjustment [Member] Elimination of Historic Interest Expense Adjustment [Member] Revenues Pro-forma revenues Business Acquisition, Pro Forma Revenue Pretax loss Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Pro-forma pretax loss Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Before Income Taxes and Nonrecurring Adjustments Business Acquisition, Pro Forma Income (Loss) From Continuing Operations, Before Income Taxes and Nonrecurring Adjustments Income tax benefit Business Acquisition, Pro Forma Income Tax Expense (Benefit) Business Acquisition, Pro Forma Income Tax Expense (Benefit) Proforma loss from continuing operations Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax Income from discontinued operations Business Acquisition, Pro Forma Income (Loss) from Discontinued Operation, Net of Tax Business Acquisition, Pro Forma Income (Loss) from Discontinued Operation, Net of Tax Net loss Business Acquisition, Pro Forma Net Income (Loss) Draw down of debt Proceeds from Issuance of Debt Schedule of Rental Equipment, Net Schedule of Property Subject to or Available for Operating Lease [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Noncontrolling Interest Schedule of Stockholders Equity [Table Text Block] Acquisitions Business Combination Disclosure [Text Block] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Beginning balance Restructuring Reserve Charges during the period Restructuring Charges Cash payments during the period Payments for Restructuring Currency Restructuring Reserve, Foreign Currency Translation Gain (Loss) Ending balance Inventory Disclosure [Abstract] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Loss from continuing operations before income tax Interest expense, net Interest Revenue (Expense), Net Depreciation and amortization Depreciation, Amortization and Accretion, Net Currency losses (gains), net Operating Currency Gains (Losses), before Tax Operating Currency Gains (Losses), before Tax Restructuring costs Stock compensation expense Allocated Share-based Compensation Expense Other expense Other Expenses Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring accrual Restricted Stock Awards Nonvested Restricted Stock Shares Activity [Table Text Block] Restricted Stock Units Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Stock Option Awards Share-based Compensation, Stock Options, Activity [Table Text Block] Assumptions Made for the Valuation of Stock Options Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Restructuring Restructuring and Related Activities Disclosure [Text Block] Restricted Stock Awards Restricted Stock [Member] Fair Value Measures Fair Value Disclosures [Text Block] Rental Equipment, net Lessor, Operating Leases [Text Block] Inventories Inventory Disclosure [Text Block] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Recently Issued and Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Raw materials and consumables Inventory, Raw Materials and Supplies, Net of Reserves Total inventories Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Stock Option Awards Employee Stock Option [Member] Number of shares which may be granted under plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of awards granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Number of options granted (in shares) Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Compensation expense for awards, associated tax benefits Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Unrecognized compensation expense for awards Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Unrecognized compensation expense for options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Unrecognized compensation expense, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Foreign currency translation adjustment, income tax expense (benefit) Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Total AOCI Including Portion Attributable to Noncontrolling Interest [Member] Foreign Currency Translation Adjustment Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Total other comprehensive income Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassifications to accumulated deficit Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2019 Debt Instrument, Redemption, Period Two [Member] 2020 Debt Instrument, Redemption, Period Three [Member] 2021 and thereafter Debt Instrument, Redemption, Period Four [Member] Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Warrants Warrant [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Shares placed in escrow (in shares) Stock Issued During Period, Shares, Conversion of Shares, Held in Escrow Account Stock Issued During Period, Shares, Conversion of Shares, Held in Escrow Account Shares released from escrow (in shares) Business Combination, Contingent Consideration Arrangements, Shares Released Business Combination, Contingent Consideration Arrangements, Shares Released Shares held in escrow (in shares) Common Stock, Shares Held in Escrow, Shares Common Stock, Shares Held in Escrow, Shares Securities excluded from computation of diluted earnings per share because their effect would have been anti-dilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Equity Stockholders' Equity Note Disclosure [Text Block] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Exercise price (in USD per share) Weighted-average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value Amounts due to affiliates Total related party liabilities, net Related Party Transaction, Due from (to) Related Party Depreciation and amortization Depreciation and Amortization, Discontinued Operations Capital expenditures Capital Expenditure, Discontinued Operations Related Parties Related Party Transactions Disclosure [Text Block] Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Debt Redemption Debt Instrument Redemption [Table Text Block] Income tax benefit Income Tax Expense (Benefit) Effective tax rate Effective Income Tax Rate Reconciliation, Percent Tax benefit for period Effective Income Tax Rate Reconciliation, Annualized Percent Effective Income Tax Rate Reconciliation, Annualized Percent Income tax expense (benefit) related to foreign currency gains and losses Effective Income Tax Rate Reconciliation, Foreign Currency Gains (Losses), Amount Effective Income Tax Rate Reconciliation, Foreign Currency Gains (Losses), Amount Income tax benefit for adjustment in provisional amounts for impacts of the tax act Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Income Statement [Abstract] Costs: Costs of leasing and services: Modular leasing Modular delivery and installation Expenses: Operating Expenses [Abstract] Selling, general and administrative Other depreciation and amortization Other (income) expense, net Other Operating Income (Expense), Net Operating income Operating Income (Loss) Interest expense Interest Expense Interest income Investment Income, Interest Income tax benefit Loss from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net loss Net loss attributable to non-controlling interest, net of tax Total loss attributable to WSC Net Income (Loss) Attributable to Parent Net (loss) income per share attributable to WSC – basic and diluted Earnings Per Share, Basic and Diluted [Abstract] Continuing operations (in USD per share) Income (Loss) from Continuing Operations, Per Basic and Diluted Share Discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share Net loss per share (in USD per share) Earnings Per Share, Basic and Diluted Weighted average shares Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic and diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Cash dividends declared per share (in USD per share) Common Stock, Dividends, Per Share, Declared Debt Debt Disclosure [Text Block]