Noninterest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Noninterest Expense
Salaries and employee benefits	$ 12,300	$ 10,698	$ 26,503	$ 21,468
Occupancy and equipment	1,766	1,578	3,538	3,084
Professional fees	1,155	753	2,590	1,571
Data processing	779	732	1,755	1,411
Software subscriptions	746	556	1,635	1,145
Amortization of intangible assets	964	554	1,822	1,107
Insurance expense	516	439	1,034	875
Other	2,786	3,135	7,909	5,702
Total noninterest expense, excluding merger-related costs	21,012	18,445	46,786	36,363
Salaries and employee benefits merger-related costs			356
Other merger-related costs	59	540	2,127	540
Total merger-related costs	$ 59	$ 540	$ 2,483	$ 540