Revenue Recognition In-Scope and Out-of-Scope Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Trust income	$ 3,118	$ 2,554	$ 8,340	$ 6,774
Service charges on deposit accounts	4,770	4,035	13,127	12,066
Insurance and retail brokerage commissions	2,218	2,156	6,368	5,982
Card-related interchange income	7,052	6,441	20,885	17,589
Derivatives mark to market	218	(160)	1,371	(2,122)
Gain on sale of loans and other assets.	2,480	1,871	6,281	3,151
Other income	2,101	1,827	6,022	5,314
Noninterest Income	27,245	26,769	80,686	67,854
In-Scope of Topic 606 [Member]
Trust income			8,340	6,774
Service charges on deposit accounts			13,127	12,066
Insurance and retail brokerage commissions			6,368	5,982
Card-related interchange income			20,885	17,589
Gain on sale of loans and other assets.	125	520	630	853
Other income	1,064	945	3,146	2,713
Noninterest Income	18,347	16,651	52,496	45,977
Out-Of-Scope of Topic 606 [Member]
Noninterest Income	$ 8,898	$ 10,118	$ 28,190	$ 21,877