Other Noninterest Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Noninterest Expenses
Data processing fees	$ 1,921	$ 1,827
Professional fees	564	739
Travel and educational expenses	403	371
Marketing and advertising expenses	373	460
Telecommunication expenses	317	346
All other noninterest expenses	2,002	2,032
Total Other Noninterest Expenses	$ 5,580	$ 5,775