Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect adjustment from accumulated other comprehensive income to retained earnings	$ 1		$ 1
Salaries and employee benefits	4,679	$ 4,287	14,251	$ 13,030
Other noninterest expense	(1,522)	$ (1,457)	(4,305)	$ (4,169)
ASU 2016-01 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect adjustment from accumulated other comprehensive income to retained earnings	1		1
ASU 2016-01 [Member] | Retained Earnings [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative effect adjustment from accumulated other comprehensive income to retained earnings	(1)		(1)
ASU 2017-07 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Salaries and employee benefits	50		150
Other noninterest expense	$ (50)		$ (150)