Income Taxes - Components of Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Current federal expense	$ 3,965	$ 1,881
Deferred federal expense	(1,150)	517
Federal income tax expense	2,815	2,398
Current state income tax expense	0	0
Provision for income taxes	$ 2,815	$ 2,398