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) income	$ 188,461	$ 132,002	$ (12,142)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	12,576	9,852	12,671
Provision for allowances	15,328	6,499	4,269
Deferred income tax expense (benefit)	5,062	(9,927)	(932)
Non-cash lease expense	1,850	2,424	3,547
Impairment charges	5,597	2,070	16,248
Loss on early extinguishment of debt	3,728	0	0
Equity compensation	7,393	6,894	5,403
Other non-cash costs	199	1,828	990
Changes in operating assets and liabilities:
Accounts receivable	(153,229)	(318,420)	(4,745)
Prepaid expenses and other assets	(6,915)	(3,364)	(2,083)
Income taxes	(20,111)	7,488	1,348
Accounts payable and accrued expenses	79,712	83,286	7,239
Operating lease liabilities	(4,962)	(6,753)	(5,872)
Other	(639)	503	1,263
Net cash provided by (used in) operating activities	134,050	(85,618)	27,204
Cash flows from investing activities
Acquisitions, net of cash acquired	(35,182)	(27,970)	0
Acquisition-related settlements	94	1,094	0
Purchases of property and equipment	(8,786)	(7,170)	(4,615)
Net cash used in investing activities	(43,874)	(34,046)	(4,615)
Cash flows from financing activities
Proceeds from term loan	0	175,000	0
Principal payments on term loan	(100,438)	(688)	0
Principal payments on note payable	(2,426)	(2,426)	(2,426)
Debt issuance costs	(3,237)	(6,098)	(81)
Borrowings under Senior Secured Asset-Based revolving credit facility	1,700,030	443,544	420,334
Repayments on Senior Secured Asset-Based revolving credit facility	(1,632,430)	(487,753)	(437,900)
Cash paid for shares withheld for taxes	(5,267)	(2,230)	(658)
Payment of contingent consideration	(7,500)	0	(79)
Cash payments to noncontrolling shareholder	0	(210)	(1,153)
Stock repurchase and retirement	(35,285)	0	0
Other	(1,046)	(45)	(47)
Net cash (used in) provided by financing activities	(87,599)	119,094	(22,010)
Effect of exchange rate changes on cash	(9)	6	(11)
Change in cash and cash equivalents	2,568	(564)	568
Cash and cash equivalents at beginning of year	1,036	1,600	1,032
Cash and cash equivalents at end of year	3,604	1,036	1,600
Supplemental disclosure of cash flow information:
Interest paid	12,859	5,773	2,666
Income taxes paid	$ 82,893	$ 3,608	$ 612