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
Net income	$ 18,264	$ 117,333	$ 158,189
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	101,272	111,791	96,706
Amortization of contract acquisition costs	2,288	2,065	983
Amortization of debt issuance costs	1,067	1,018	1,016
Imputed interest expense and fair value adjustments to contingent consideration	7,579	1,746	1,168
Provision for credit losses	2,009	9,391	(350)
(Gain) loss on disposal of assets	2,219	1,916	1,127
Loss on dissolution of subsidiary	301	0	0
Impairment losses	11,733	13,749	11,254
Deferred income taxes	(7,528)	(11,001)	831
Excess tax benefit from equity-based awards	1,705	(1,122)	(5,301)
Equity-based compensation expense	22,071	17,571	16,425
(Gain) loss on foreign currency derivatives	(3)	(7)	(213)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	22,359	(74,564)	40,156
Prepaids and other assets	8,570	43,699	18,407
Accounts payable and accrued expenses	9,518	(12,695)	(17,209)
Deferred revenue and other liabilities	(58,659)	(83,842)	(71,893)
Net cash provided by operating activities	144,765	137,048	251,296
Cash flows from investing activities
Proceeds from sale of long-live assets	261	229	93
Purchases of property, plant and equipment	(67,839)	(84,012)	(60,358)
Acquisitions, net of cash acquired for current period and prior period, respectively	0	(142,420)	(481,718)
Net cash used in investing activities	(67,578)	(226,203)	(541,983)
Cash flows from financing activities
Net proceeds (borrowings) from line of credit	35,000	169,000	406,000
Payments on other debt	(2,317)	(3,245)	(6,626)
Payments of contingent consideration and hold back payments to acquisitions	(37,676)	(9,600)	(11,517)
Dividends paid to shareholders	(49,232)	(48,072)	(42,217)
Payments to noncontrolling interest	(10,972)	(11,883)	(10,984)
Tax payments related to issuance of restricted stock units	(3,037)	(7,164)	(11,397)
Payments of debt issuance costs	0	0	(3,614)
Net cash (used in) provided by financing activities	(68,234)	89,036	319,645
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(2,112)	(13,499)	(7,291)
Increase (decrease) in cash, cash equivalents and restricted cash	6,841	(13,618)	21,667
Cash, cash equivalents and restricted cash, beginning of period	167,064	180,682	159,015
Cash, cash equivalents and restricted cash, end of period	173,905	167,064	180,682
Supplemental disclosures
Cash paid for interest	77,199	34,984	11,188
Cash paid for income taxes	46,129	42,563	71,392
Non-cash investing and financing activities
Acquisition of long lived assets through finance leases	3,126	461	912
Acquisition of equipment through increase in accounts payable, net	$ 2,626	$ 3,346	$ (2,243)