CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net (loss) income	$ 132,002	$ (12,142)	$ (55,943)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	9,852	12,671	14,075
Provision for allowances	6,499	4,269	3,243
Deferred income tax (benefit) expense	(9,927)	(932)	31,159
Non-cash lease expense	2,424	3,547	4,989
Impairment charges	2,070	16,248	16,306
Loss on early extinguishment of debt	0	0	1,978
Equity compensation	6,894	5,403	3,396
Other non-cash costs	1,828	990	513
Changes in operating assets and liabilities:
Accounts receivable	(318,420)	(4,745)	(6,642)
Prepaid expenses and other assets	(3,364)	(2,083)	(1,574)
Accounts payable and accrued expenses	83,286	7,239	(1,308)
Operating lease liabilities	(6,753)	(5,872)	(5,820)
Other	7,991	2,611	1,170
Net cash (used in) provided by operating activities	(85,618)	27,204	5,542
Cash flows from investing activities
Acquisitions, net of cash acquired	(26,876)	0	0
Purchases of property and equipment	(7,170)	(4,615)	(2,940)
Net cash used in investing activities	(34,046)	(4,615)	(2,940)
Cash flows from financing activities
Proceeds from term loan	175,000	0	0
Principal payments on term loan	(688)	0	(83,876)
Principal payments on note payable	(2,426)	(2,426)	0
Borrowings under revolving credit facility	0	0	5,000
Repayments on revolving credit facility	0	0	(5,000)
Debt issuance costs	(6,098)	(81)	(2,058)
Proceeds under Senior Secured Asset-Based revolving credit facility	0	0	76,640
Borrowings under Senior Secured Asset-Based revolving credit facility	443,544	420,334	71,934
Repayments on Senior Secured Asset-Based revolving credit facility	(487,753)	(437,900)	(77,600)
Cash paid for shares withheld for taxes	(2,230)	(658)	(801)
Cash payments to noncontrolling shareholder	(210)	(1,153)	(1,573)
Other	(45)	(126)	(265)
Net cash provided by (used in) financing activities	119,094	(22,010)	(17,599)
Effect of exchange rate changes on cash	6	(11)	10
Change in cash and cash equivalents	(564)	568	(14,987)
Cash and cash equivalents at beginning of year	1,600	1,032	16,019
Cash and cash equivalents at end of year	1,036	1,600	1,032
Supplemental disclosure of cash flow information:
Interest paid	5,773	2,666	4,554
Income taxes paid	$ 3,608	$ 612	$ 555