Supplemental Financial Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other noninterest income
Loan fees	$ 953	$ 795	$ 1,816	$ 1,737
Other customer service fees	741	694	2,163	2,023
Bank-owned life insurance	356	345	1,015	1,000
Other Investments	355	1,348	1,102	2,262
Derivative Valuation	(35)		(172)	(456)
Other	77	15	123	134
Total	2,447	3,197	6,047	6,700
Other noninterest expense
Marketing and business development	603	559	1,991	2,104
Service contracts	1,374	1,331	4,095	3,855
Professional fees	923	824	2,621	2,135
Office supplies and delivery	313	336	894	972
Other	540	947	2,408	2,861
Total	$ 3,753	$ 3,997	$ 12,009	$ 11,927