Revenue Recognition In-Scope and Out-of-Scope Revenue Streams - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Trust income	$ 2,554	$ 2,325	$ 6,774	$ 6,221
Service charges on deposit accounts	4,035	4,954	12,066	13,792
Insurance and retail brokerage commissions	2,156	1,912	5,982	5,887
Card-related interchange income	6,441	5,629	17,589	15,800
Derivatives mark to market	(160)	(45)	(2,122)	(88)
Gain on sale of loans and other assets.	1,871	970	3,151	3,831
Other income	1,827	1,865	5,314	5,356
Noninterest Income	26,769	22,179	67,854	62,957
In-Scope of Topic 606 [Member]
Trust income			6,774	6,221
Service charges on deposit accounts			12,066	13,792
Insurance and retail brokerage commissions			5,982	5,887
Card-related interchange income			17,589	15,800
Gain on sale of loans and other assets.	520	181	853	861
Other income	945	937	2,713	2,789
Noninterest Income	16,651	15,938	45,977	45,350
Out-Of-Scope of Topic 606 [Member]
Noninterest Income	$ 10,118	$ 6,241	$ 21,877	$ 17,607