CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss from continuing operations	$ (86,570)	$ (163,149)
Adjustments to reconcile net loss to net cash used in operating activities
Non-cash interest income	(3,298)	(5,427)
Deferred financing fees related to repricing of long-term debt	0	1,079
Amortization of deferred financing fees	3,502	3,470
Impairment of goodwill	0	99,670
Depreciation and amortization	101,059	101,065
Change in fair value of warrant liability	27	(399)
Fair value adjustments related to contingent consideration	0	1,678
Deferred income taxes	(1,439)	(29,546)
Equity-based compensation of Karman Topco L.P.	(1,524)	(480)
Stock-based compensation	13,069	16,082
(Income) loss from equity method investments	(4,158)	123
Distribution received from equity method investments	0	3,289
Gain on repurchases of Senior Secured Notes and Term Loan Facility debt	(1,624)	(5,103)
Changes in operating assets and liabilities, net of effects from divestitures:
Accounts receivable, net	(66,433)	9,268
Prepaid expenses and other assets	(17,207)	26,233
Accounts payable	19,185	32,834
Accrued compensation and benefits	(2,548)	(21,602)
Deferred revenues	7,420	2,449
Other accrued expenses and other liabilities	(7,189)	(27,233)
Net cash (used in) provided by operating activities	(47,728)	44,055
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of investments in unconsolidated affiliates	(3,458)	(10,932)
Purchase of property and equipment	(17,219)	(25,029)
Proceeds from divestitures, net of cash	0	146,828
Net cash (used in) provided by investing activities	(20,677)	110,867
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowings under lines of credit	80,000	0
Payments on lines of credit	(80,000)	0
Principal payments on long-term debt	(6,625)	(6,637)
Repurchases of Senior Secured Notes and Term Loan Facility debt	(18,243)	(71,749)
Debt issuance costs	0	(971)
Proceeds from issuance of common stock	993	1,167
Payments for taxes related to net share settlement under 2020 Incentive Award Plan	(3,624)	(11,113)
Contingent consideration payments	0	(4,455)
Purchase of treasury stock	(869)	(20,775)
Net cash used in financing activities	(28,368)	(114,533)
Net effect of foreign currency changes on cash, cash equivalents and restricted cash	(3,775)	(2,579)
Net change in cash, cash equivalents and restricted cash	(100,548)	37,810
Cash, cash equivalents and restricted cash, beginning of period	220,751	131,560
Cash, cash equivalents and restricted cash, end of period	120,203	169,370
SUPPLEMENTAL CASH FLOW INFORMATION
Purchases of property and equipment recorded in accounts payable and accrued expenses	$ 4,841	$ 10,660