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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |  |
Net loss | $ (55,461) | $ (21,308) | $ (128,865)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 24,210 | 25,501 | 23,838
Impairment charges |  |  | 82,083
Equity-based compensation | 2,631 | 1,223 | 1,553
Paid-in-kind interest added to debt principal | 295 | 1,777 | 790
Provision for credit losses | 1,790 | 439 | 4,452
Amortization of deferred financing fees included in interest expense | 1,726 | 1,840 | 1,266
Inventory write-offs |  |  | 5,432
Write-off of unamortized deferred financing fees | 4,296 |  |
Loss on debt extinguishment | 1,580 |  |
Loss on disposal of property, plant and equipment | 935 | 243 | 7,750
Mark-to-market adjustments | 3,502 | (3,585) | (217)
Change in fair value of warrant liabilities | 29,675 |  |
Foreign currency transactions | 667 | 492 | 498
Deferred income tax (benefit) expense | (2,037) | (3,448) | (18,256)
Other | 1,204 |  |
Change in operating assets and liabilities: |  |  |
Accounts receivable | (16,789) | (20,102) | 965
Inventories | (46,770) | (16,543) | 16,869
Derivative assets and liabilities | (22,937) | 14,860 | 1,463
Prepaid expense and other assets | (15,476) | (401) | (351)
Accounts payable | 27,646 | 18,724 | (32,146)
Accrued liabilities and other | 2,685 | 3,165 | 19,426
Net cash provided by (used in) operating activities | (56,628) | 2,877 | (13,450)
Cash flows from investing activities: |  |  |
Additions to property, plant and equipment | (63,261) | (25,115) | (19,472)
Additions to intangible assets | (167) | (321) |
Acquisition of business, net of cash acquired | (14,885) |  | (393,337)
Proceeds from sale of property, plant and equipment | 4,144 | 2,789 | 987
Net cash used in investing activities | (74,169) | (22,647) | (411,822)
Cash flows from financing activities: |  |  |
Payments on debt | (438,571) | (111,313) | (122,018)
Proceeds from debt | 328,539 | 119,740 | 352,968
Proceeds from related party debt | 11,700 |  |
Debt extinguishment costs | (1,580) |  |
Payment of debt issuance costs | (6,007) | (1,426) | (8,229)
Proceeds from de-SPAC merger and PIPE financing | 255,737 |  |
Payment of common equity issuance costs | (23,998) |  |
Payment of preferred equity issuance costs | (1,250) |  |
Principal payments on capital leases |  |  | (2,292)
Net proceeds from repurchase agreements | 14,588 |  |
Common equivalent preferred dividends | (4,380) |  |
Payment of taxes for net share settlement of equity awards | (477) | (162) |
Proceeds from exercise of stock options | 375 |  |
Proceeds from the issuance of common equivalent preferred units |  | 17,000 | 222,150
Net cash provided by financing activities | 134,676 | 23,839 | 442,579
Effect of exchange rate changes on cash | (344) | 149 | (38)
Net increase (decrease) in cash and cash equivalents and restricted cash | 3,535 | 4,218 | 17,269
Cash and cash equivalents and restricted cash at beginning of period | 22,870 | 18,652 | 1,383
Cash and cash equivalents and restricted cash at end of period | 26,405 | 22,870 | 18,652
Supplemental non-cash investing and financing activities: |  |  |
Property, plant and equipment acquired but not yet paid | 8,811 | 184 | 2,020
Accumulating preferred dividends | 13,882 | 24,208 | 18,513
Exchange of Redeemable Common Equivalent Preferred Units for Series A Convertible Preferred Shares | 271,539 |  |
Exchange of Redeemable Common Equivalent Preferred Units for common shares | 24,214 |  |
Related party debt exchanged for common shares | 25,000 |  |
Acquisition of Kohana through issuance of common stock | 23,435 |  |
Loss on extinguishment of Common Equivalent Preferred Units | 2,870 |  |
Supplemental cash flow information: |  |  |
Cash paid for interest | 30,448 | 28,496 | 20,789
Cash paid for income taxes, net | $ 814 | $ 1,409 | $ 98

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for cost incurred directly with the issuance temporary equity security. + References No definition available. + Details
Name: | wch_PaymentsOfTemporaryEquityIssuanceCosts
Namespace Prefix: | wch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow for principal payments on capital leases. + References No definition available. + Details
Name: | wch_PrincipalPaymentsOnCapitalLeases
Namespace Prefix: | wch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from the issuance of redeemable common equivalent preferred units during the period. + References No definition available. + Details
Name: | wch_ProceedsFromIssuanceOfRedeemableCommonEquivalentPreferredUnits
Namespace Prefix: | wch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of related party debt exchanged for common shares in non cash financing activity. + References No definition available. + Details
Name: | wch_RelatedPartyDebtExchangedForCommonShares
Namespace Prefix: | wch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration