Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Expenses
Consulting and outside services	$ 7,219	$ 5,331	$ 5,683
Mergers and acquisition expenses	6,618	2,130	1,732
Debit card expenses	5,104	7,189	8,462
Telephone	4,487	3,891	3,828
Employee expenses	4,412	4,160	3,573
Business development	4,172	3,333	3,286
VIE amortization and other expenses	3,618	3,109	2,702
Loan expenses	3,462	3,080	3,611
Printing and supplies	3,264	2,661	2,800
Postage	3,104	2,684	2,785
Legal fees	1,763	1,106	1,027
Accounting and audit fees	1,456	1,848	1,613
Checking and operating expenses	1,234	1,760	2,942
ATM expenses	1,217	1,720	880
Other	3,164	3,043	2,646
Total other expenses	$ 54,294	$ 47,045	$ 47,570