Income Taxes - Summary of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 28,833	$ 15,041	$ 23,407
State	7,564	6,158	5,992
Total	36,397	21,199	29,399
Deferred:
Federal	(4,903)	(824)	(9,526)
State	(990)	140	(3,487)
Total	(5,893)	(684)	(13,013)
Tax provision	$ 30,504	$ 20,515	$ 16,386