Income Taxes - Schedule of Income before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income before provision for income taxes
U.S. income before provision for income taxes	$ 171,497	$ 132,838	$ 149,338
Foreign income before provision for income taxes	16,052	10,941	11,062
Income before provision for income taxes	187,549	143,779	160,400
Current taxes:
U.S. federal	30,818	26,223	58,082
State and local	7,627	7,378	8,155
Non-U.S.	2,024	2,029	1,991
Total	40,469	35,630	68,228
Deferred taxes:
U.S. federal	(133)	(748)	(428)
State and local	(74)	(281)	(412)
Non-U.S.	303	(344)	526
Deferred income taxes	96	(1,373)	(314)
Provision for income taxes	$ 40,565	$ 34,257	$ 67,914