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 income	$ 117,333	$ 158,189	$ 129,331
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	111,791	96,706	78,862
Amortization of contract acquisition costs	2,065	983	590
Amortization of debt issuance costs	1,018	1,016	732
Imputed interest expense and fair value adjustments to contingent consideration	1,746	1,168	4,484
Provision for credit losses	9,391	(350)	494
(Gain) loss on disposal of assets	1,916	1,127	521
Loss on dissolution of subsidiary	0	0	19,905
Impairment losses	13,749	11,254	5,809
Deferred income taxes	(11,001)	831	(5,193)
Excess tax benefit from equity-based awards	(1,122)	(5,301)	(726)
Equity-based compensation expense	17,571	16,425	12,507
(Gain) loss on foreign currency derivatives	(7)	(213)	103
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	(74,564)	40,156	(40,625)
Prepaids and other assets	43,699	18,407	57,597
Accounts payable and accrued expenses	(12,695)	(17,209)	76,726
Deferred revenue and other liabilities	(83,842)	(71,893)	(69,197)
Net cash provided by operating activities	137,048	251,296	271,920
Cash flows from investing activities
Proceeds from sale of long-live assets	229	93	20
Purchases of property, plant and equipment	(84,012)	(60,358)	(59,772)
Acquisitions, net of cash acquired of zero and $18,638, respectively	(142,420)	(481,718)	(52,675)
Net cash used in investing activities	(226,203)	(541,983)	(112,427)
Cash flows from financing activities
Net proceeds (borrowings) from line of credit	169,000	406,000	95,000
Payments on other debt	(3,245)	(6,626)	(8,619)
Payments of contingent consideration and hold back payments to acquisitions	(9,600)	(11,517)	(48,686)
Dividends paid to shareholders	(48,072)	(42,217)	(134,554)
Payments to noncontrolling interest	(11,883)	(10,984)	(10,801)
Tax payments related to issuance of restricted stock units	(7,164)	(11,397)	(4,521)
Payments of debt issuance costs	0	(3,614)	(45)
Net cash (used in) provided by financing activities	89,036	319,645	(112,226)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(13,499)	(7,291)	6,157
Increase (decrease) in cash, cash equivalents and restricted cash	(13,618)	21,667	53,424
Cash, cash equivalents and restricted cash, beginning of period	180,682	159,015	105,591
Cash, cash equivalents and restricted cash, end of period	167,064	180,682	159,015
Supplemental disclosures
Cash paid for interest	34,984	11,188	10,233
Cash paid for income taxes	42,563	71,392	47,761
Non-cash investing and financing activities
Acquisition of long lived assets through finance leases	461	912	1,852
Acquisition of equipment through increase in accounts payable, net	$ 3,346	$ (2,243)	$ 347