Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current income taxes:
Federal	$ 10,244	$ 6,791	$ 5,536
State	841	1,250	990
Total current tax expense	11,085	8,041	6,526
Deferred income tax expense (benefit)	(5,594)	(420)	(125)
Income tax expense	$ 5,491	$ 7,621	$ 6,401