Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Current income tax expense: Federal									$ 4,761	$ 6,191
Current income tax expense: State									3,268	3,366
Current income tax expense									8,029	9,557
Deferred income tax expense: Federal									935	(1,288)
Deferred income tax expense: State									345	(787)
Deferred income tax expense									1,280	(2,075)
Income Tax Expense	$ 2,188	$ 2,359	$ 2,317	$ 2,445	$ 2,401	$ 2,040	$ 1,200	$ 1,841	$ 9,309	$ 7,482