Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Expenses
Consulting and outside services	$ 11,324	$ 8,276	$ 7,219
Mergers and acquisition expenses	7,812	8,503	6,618
Telephone	5,199	4,827	4,487
Debit card expenses	4,947	5,968	5,104
Checking and operating expenses	4,944	1,757	1,234
Loan expenses	4,905	4,140	3,462
VIE amortization and other expenses	4,893	4,341	3,618
Business development	4,645	4,446	4,172
Printing and supplies	3,579	3,256	3,264
Postage	3,347	3,437	3,104
Employee expenses	2,924	5,138	4,412
Accounting and audit fees	1,895	1,712	1,456
Legal fees	1,658	1,245	1,763
Other	4,737	5,729	4,381
Total other expenses	$ 66,809	$ 62,775	$ 54,294