Income Taxes (Schedule of Allocation of Federal and State Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
Federal													$ 3,675	$ 3,255	$ 2,005
State													1,296	1,128	699
Current income tax expense (benefit), total													4,971	4,383	2,704
Deferred
Federal													(460)	(643)	926
State													(95)	(107)	146
Deferred income tax expense (benefit), total													(555)	(750)	1,072
Income tax expense (benefit), total	$ 1,356	$ 1,014	$ 1,078	$ 968	$ 811	$ 735	$ 1,004	$ 1,083	$ 579	$ 1,363	$ 760	$ 1,074	$ 4,416	$ 3,633	$ 3,776