Revenue Recognition - Non-interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Non-interest income
Loss on limited partnerships	$ (158)	$ (450)	$ (315)	$ (900)
Dividends on equity investments	139	175	333	406
Unrealized gains recognized on equity investments		232	447	232
Net gains on sale of securities	390	22	390	28
Other	2,188	1,038	2,995	2,702
Total non-interest income	6,900	5,855	13,007	11,762
Non-interest expense
Salaries and employee benefits	9,266	8,994	19,438	18,237
Occupancy expense	2,504	2,450	4,832	4,811
Loss (gain) on sale on foreclosed assets			2	(37)
Gain on sale of OREO		(21)	2	(37)
Other	6,263	6,233	11,579	12,498
Total non-interest expense	18,033	17,656	35,851	35,509
Deposit Account [Member]
Non-interest income
Revenue from Contract with Customer, Excluding Assessed Tax	2,618	3,151	5,802	6,094
Returned Item and Overdraft Fees [Member]
Non-interest income
Revenue from Contract with Customer, Excluding Assessed Tax	962	1,657	2,626	3,223
Other Service Charges on Deposits [Member]
Non-interest income
Revenue from Contract with Customer, Excluding Assessed Tax	1,656	1,494	3,176	2,871
Debit Card [Member]
Non-interest income
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,723	$ 1,687	$ 3,355	$ 3,200