Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Expenses
Mergers and acquisition expenses	$ 8,503	$ 6,618	$ 2,130
Consulting and outside services	8,276	7,219	5,331
Debit card expenses	5,968	5,104	7,189
Employee expenses	5,138	4,412	4,160
Telephone	4,827	4,487	3,891
Business development	4,446	4,172	3,333
VIE amortization and other expenses	4,341	3,618	3,109
Loan expenses	4,140	3,462	3,080
Postage	3,437	3,104	2,684
Printing and supplies	3,256	3,264	2,661
Checking and operating expenses	1,757	1,234	1,760
Accounting and audit fees	1,712	1,456	1,848
ATM expenses	1,700	1,217	1,720
Legal fees	1,245	1,763	1,106
Other	4,029	3,164	3,043
Total other expenses	$ 62,775	$ 54,294	$ 47,045