Segments - Reconciliation of Total Segment EBITDA to Income Before Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting [Abstract]
Total Segment EBITDA	$ 46,372	$ 59,774
Depreciation and amortization	12,792	9,907
Other expense	(687)	(3,318)
Income from operations	34,267	53,185
Interest income	1,927	1,798
Interest expense	(20,240)	(14,749)
Income before income taxes	$ 15,267	$ 36,916