Income Taxes - Summary of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 29,882	$ 30,410	$ 17,435
State and local	3,592	2,075	4,033
Total current	33,474	32,485	21,468
Deferred:
Federal	1,330	13,573	27,452
State and local	5,924	(16,259)	(22,641)
Total deferred	7,254	(2,686)	4,811
Total income tax expense	$ 40,728	$ 29,799	$ 26,279