Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current tax provision
Federal									$ 6,178	$ 6,340	$ 2,875
State									70	157	185
Total current tax provision									6,248	6,497	3,060
Deferred tax expense (benefit)
Federal									484	(1,367)	665
Total deferred tax expense									484	(1,367)	665
Provision for income taxes	$ (17)	$ 2,272	$ 2,310	$ 2,167	$ 1,909	$ 889	$ 1,682	$ 650	$ 6,732	$ 5,130	$ 3,725