Business Segment Information - Schedule of net interest income and noninterest income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information
Net interest income	$ 13,318	$ 12,219	$ 24,791	$ 24,270
Noninterest Income	1,171	1,386	2,265	2,876
Assets	1,688,192		1,688,192		$ 1,416,154
Operating Segments | Commercial
Segment Reporting Information
Net interest income	13,486	12,449	25,155	24,733
Noninterest Income	1,159	1,379	2,248	2,862
Assets	1,685,412		1,685,412		1,414,996
Other
Segment Reporting Information
Net interest income	(168)	(230)	(364)	(463)
Noninterest Income	12	$ 7	17	$ 14
Assets	$ 2,780		$ 2,780		$ 1,158