Revenue Recognition In-Scope and Out-of-Scope Revenue Streams - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Trust income	$ 2,109	$ 1,970	$ 4,220	$ 3,896
Service charges on deposit accounts	3,286	4,593	8,031	8,838
Insurance and retail brokerage commissions	1,831	2,014	3,826	3,975
Card-related interchange income	5,886	5,441	11,148	10,171
Derivatives mark to market	(221)	(17)	(1,962)	(43)
Gain on sale of loans and other assets.	581	1,777	1,280	2,861
Other income	1,680	1,786	3,487	3,491
Noninterest Income	21,812	21,906	41,085	40,778
In-Scope of Topic 606 [Member]
Trust income			4,220	3,896
Service charges on deposit accounts			8,031	8,838
Insurance and retail brokerage commissions			3,826	3,975
Card-related interchange income			11,148	10,171
Gain on sale of loans and other assets.	173	422	332	680
Other income	824	990	1,768	1,853
Noninterest Income	14,109	15,430	29,325	29,413
Out-Of-Scope of Topic 606 [Member]
Noninterest Income	$ 7,703	$ 6,476	$ 11,760	$ 11,365