Income Taxes, Current and Deferred Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current [Abstract]
Federal									$ 2,517	$ 9,460	$ 13,101
State									6,224	4,046	4,832
Total Current									8,741	13,506	17,933
Deferred [Abstract]
Federal									5,622	11,154	(1,607)
State									(160)	1,451	(229)
Total Deferred									5,462	12,605	(1,836)
Total Provision for Taxes	$ 4,258	$ 2,995	$ 3,589	$ 3,361	$ 11,974	$ 5,000	$ 4,708	$ 4,429	$ 14,203	$ 26,111	$ 16,097