Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 11,349	$ 7,577	$ 14,485
State	2,528	2,126	5,066
Deferred:
Federal	(8,073)	(1,929)	(7,702)
State	2,576	680	(1,784)
Income Tax Expense (Benefit)	$ 8,380	$ 8,454	$ 10,065