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	$ 19,410	$ (18,527)	$ (52,293)
Adjustments to reconcile net loss to net cash provided by operations
Loss on extinguishment of debt	3,673	0	0
Depreciation and amortization	73,140	82,064	91,199
Deferred income taxes	(3,344)	(21,996)	(16,952)
Stock-based compensation	23,805	32,580	3,465
Impairments of long-lived assets	1,008	3,274	1,797
Provision for bad debts	877	1,169	432
Amortization of financing fees	453	471	497
Amortization of debt discount	1,675	3,262	2,357
Deferred rent	(226)	(1,621)	(827)
Unrealized translation gain on investment in foreign subsidiaries	(2,345)	(154)	(597)
Changes in fair value of derivatives	(4,102)	(7,422)	5,751
Excess payment on contingent consideration for acquisition	0	(1,159)	0
Changes in operating assets and liabilities
Accounts receivable	(11,184)	(40,086)	165
Insurance receivable	921	750	14,250
Prepaid expenses	(1,101)	(4,975)	(1,245)
Other assets	(4,515)	(3,181)	797
Accounts payable	7,885	12,950	(3,470)
Litigation settlement obligation	4,165	(750)	(14,250)
Accrued expenses	303	30,212	(6,396)
Other liabilities	(6,235)	1,744	11,505
Net cash provided by operating activities	104,263	68,605	36,185
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(4,498)	(3,234)	(2,317)
Purchases of intangible assets and capitalized software	(15,689)	(15,860)	(14,185)
Acquisitions, net of cash acquired	0	(66,323)	0
Proceeds from disposition of property and equipment	51	41	236
Net cash used in investing activities	(20,136)	(85,376)	(16,266)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of common stock	2,416	2,483	3,250
Repurchases of common stock	(13,962)	0	0
Proceeds from issuance of common stock in IPO, net of underwriting discounts and commissions	0	102,638	0
Payments of IPO issuance costs	(225)	(7,890)	0
Capital contribution from certain stockholders	0	15,576	0
Payments of long-term debt	(510,340)	(113,147)	(6,461)
Proceeds from term loan borrowings	300,000	0	0
Repayments of revolving credit facility	(17,495)	0	(83,800)
Borrowings on revolving credit facility	222,989	0	83,800
Payments of debt issuance costs	(9,093)	0	0
Payment of contingent consideration for acquisition	(226)	(738)	0
Payments of finance lease obligations	(3)	(9)	(7)
Net cash used in financing activities	(25,939)	(1,087)	(3,218)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(3,091)	(777)	(367)
NET CHANGE IN CASH AND CASH EQUIVALENTS	55,097	(18,635)	16,334
Beginning of period	47,998	66,633	50,299
Cash and cash equivalents at end of period	103,095	47,998	66,633
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for Interest, net of capitalized amounts	32,348	30,782	34,658
Income taxes	18,532	5,574	3,224
Offering costs included in accounts payable and accrued liabilities	0	225	0
Noncash investing activities
Purchases of property and equipment in accounts payable and accrued expenses	25	109	128
Noncash purchase price of business combinations	$ 0	$ 1,445	$ 0