UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
REVENUES	$ 205,591	$ 159,328	$ 397,563	$ 298,698
OPERATING EXPENSES:
Cost of revenues (exclusive of depreciation and amortization below)	107,576	75,580	208,532	143,159
Corporate technology and production systems	12,539	9,998	25,091	20,351
Selling, general and administrative	41,886	38,605	84,219	68,211
Depreciation and amortization	19,872	20,299	40,028	40,848
Impairments of long-lived assets	612	49	612	2,925
Total operating expenses	182,485	144,531	358,482	275,494
OPERATING INCOME	23,106	14,797	39,081	23,204
OTHER EXPENSE (INCOME):
Interest expense, net	6,619	7,603	12,955	15,173
Loss (gain) on interest rate swaps	32	133	(296)	87
Other income	(508)	(362)	(862)	(633)
Total other expense, net	6,143	7,374	11,797	14,627
INCOME BEFORE INCOME TAXES	16,963	7,423	27,284	8,577
Income tax provision	5,392	4,026	9,477	4,552
NET INCOME	11,571	3,397	17,807	4,025
Unrealized loss on hedged transactions, net of tax	0	(188)	0	(322)
Foreign currency translation adjustments, net of tax	(3,483)	222	(3,200)	594
Total other comprehensive income (loss)	(3,483)	34	(3,200)	272
COMPREHENSIVE INCOME	$ 8,088	$ 3,431	$ 14,607	$ 4,297
Net income per share attributable to stockholders
Basic (in USD per share)	$ 0.12	$ 0.04	$ 0.19	$ 0.05
Diluted (in USD per share)	$ 0.12	$ 0.04	$ 0.18	$ 0.05
Weighted average number of shares outstanding
Basic (in shares)	94,024,970	88,826,919	93,996,553	88,717,890
Diluted (in shares)	99,344,563	88,913,175	99,265,668	88,802,948