Loans - Schedule of Changes in the Accretable Yield for Loans Acquired (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning Balance	$ 7,650	$ 5,905	$ 6,803	$ 6,713
Additions	167	1,114	2,096	1,114
Accretion income	(858)	(670)	(2,131)	(1,899)
Reductions due to exit events	(143)	(595)	(1,131)	(900)
Reclassifications from nonaccretable differences	498	729	1,677	1,455
Ending Balance	7,314	6,483	7,314	6,483
Interest Income on Non-Accrual Loans if Accrued	$ 946	$ 820	$ 1,814	$ 2,492