CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Consolidated net income	$ 72,631	$ 188,461	$ 132,002
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	18,347	12,576	9,852
Provision for allowances	17,355	15,328	6,499
Deferred income tax expense (benefit)	1,304	5,062	(9,927)
Non-cash lease expense	1,111	1,850	2,424
Impairment charges	719	5,597	2,070
Loss on early extinguishment of debt	1,723	3,728	0
Equity compensation	6,579	7,393	6,894
Other non-cash costs	1,252	199	1,828
Changes in operating assets and liabilities:
Accounts receivable	251,427	(153,229)	(318,420)
Prepaid expenses and other assets	268	(6,915)	(3,364)
Income taxes	6,955	(20,111)	7,488
Accounts payable and accrued expenses	(126,611)	79,712	83,286
Operating lease liabilities	(4,371)	(4,962)	(6,753)
Other	(191)	(639)	503
Net cash provided by (used in) operating activities	248,498	134,050	(85,618)
Cash flows from investing activities
Acquisitions, net of cash acquired	0	(35,182)	(27,970)
Acquisition-related settlements	199	94	1,094
Purchases of property and equipment	(13,974)	(8,786)	(7,170)
Net cash used in investing activities	(13,775)	(43,874)	(34,046)
Cash flows from financing activities
Proceeds from term loan	0	0	175,000
Principal payments on term loan	(73,875)	(100,438)	(688)
Principal payments on note payable	0	(2,426)	(2,426)
Debt issuance costs	0	(3,237)	(6,098)
Borrowings under Senior Secured Asset-Based revolving credit facility	720,991	1,700,030	443,544
Repayments on Senior Secured Asset-Based revolving credit facility	(797,791)	(1,632,430)	(487,753)
Cash paid for shares withheld for taxes	(4,904)	(5,267)	(2,230)
Payment of contingent consideration	(7,500)	(7,500)	0
Stock repurchase and retirement	(57,654)	(35,285)	0
Other	(508)	(1,046)	(255)
Net cash (used in) provided by financing activities	(221,241)	(87,599)	119,094
Effect of exchange rate changes on cash	8	(9)	6
Change in cash and cash equivalents	13,490	2,568	(564)
Cash and cash equivalents at beginning of year	3,604	1,036	1,600
Cash and cash equivalents at end of year	17,094	3,604	1,036
Supplemental disclosure of cash flow information:
Interest paid	7,534	12,859	5,773
Income taxes paid	$ 21,986	$ 82,893	$ 3,608