Revenue Recognition - Summary of Company's Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Noninterest income:
Loan servicing fees	$ 434	$ 480	$ 409	$ 914	$ 807
Earnings on bank-owned life insurance	1,314	1,336	851	2,650	1,761
Net (loss) gain from sales of loans	(2,032)	771	902	(1,261)	2,631
Net (loss) gain from sales of investment securities	(21)	7,760	212	7,739	639
Other income	2,653	1,754	1,001	4,407	2,461
Total noninterest income	6,898	14,475	6,324	21,373	14,005
Service charges on deposit accounts
Noninterest income:
Noninterest income	1,399	1,715	1,441	3,114	2,771
Other service fee income
Noninterest income:
Noninterest income	297	311	363	608	719
Debit card interchange income
Noninterest income:
Noninterest income	457	348	1,145	805	2,216
Trust administrative fees
Noninterest income:
Noninterest income	2,397	0	0	2,397	0
Within Scope
Noninterest income:
Other income	184	217	544	401	736
Total noninterest income	4,734	2,591	3,493	7,325	6,442
Within Scope | Service charges on deposit accounts
Noninterest income:
Noninterest income	1,399	1,715	1,441	3,114	2,771
Within Scope | Other service fee income
Noninterest income:
Noninterest income	297	311	363	608	719
Within Scope | Debit card interchange income
Noninterest income:
Noninterest income	457	348	1,145	805	2,216
Within Scope | Trust administrative fees
Noninterest income:
Noninterest income	2,397	0	0	2,397	0
Out of Scope
Noninterest income:
Loan servicing fees	434	480	409	914	807
Earnings on bank-owned life insurance	1,314	1,336	851	2,650	1,761
Net (loss) gain from sales of loans	(2,032)	771	902	(1,261)	2,631
Net (loss) gain from sales of investment securities	(21)	7,760	212	7,739	639
Other income	2,469	1,537	457	4,006	1,725
Total noninterest income	$ 2,164	$ 11,884	$ 2,831	$ 14,048	$ 7,563