Other Noninterest Income and Other Noninterest Expense - Summary of Other Noninterest Income and Other Noninterest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other noninterest income
Insurance revenue	$ 249	$ 198
Mortgage banking income	1,111	579
Income from bank owned life insurance policies	1,328	1,152
Other	(577)	1,585
Total other noninterest income	2,111	3,514
Other noninterest expenses
Data processing expense	3,352	2,594
Software amortization	3,547	3,335
Consulting and professional fees	2,707	2,229
Loan related expenses	760	910
FDIC insurance	2,436	1,752
Communications	1,156	998
Advertising and public relations	1,464	781
Legal expenses	411	158
Other	11,636	8,181
Total other noninterest expenses	$ 27,469	$ 20,938