Segment Information - Income from Segments to Consolidated Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting [Abstract]
Total EBITDA	$ 75,654		$ 43,794		$ 140,106	$ 94,798
Less:
Income tax expense	2,632		4,520		7,340	9,038
Interest expense, net	5,208		5,810		10,725	12,226
Depreciation and amortization	18,723		17,839		37,346	35,634
Net income	$ 49,091	$ 35,604	$ 15,625	$ 22,275	$ 84,695	$ 37,900