Revenue Recognition In-Scope and Out-of-Scope Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Trust income	$ 1,926	$ 1,928
Service charges on deposit accounts	4,245	4,406
Insurance and retail brokerage commissions	1,961	1,868
Card-related interchange income	4,730	4,742
Derivatives mark to market	(26)	789
Gain on sale of other loans and assets	1,084	574
Other income	1,705	1,628
Noninterest Income	18,872	22,043
In-Scope of Topic 606 [Member]
Trust income	1,926	1,928
Service charges on deposit accounts	4,245	4,406
Insurance and retail brokerage commissions	1,961	1,868
Card-related interchange income	4,730	4,742
Gain on sale of other loans and assets	258	207
Other income	862	892
Noninterest Income	13,982	14,043
Out-Of-Scope of Topic 606 [Member]
Noninterest Income	$ 4,890	$ 8,000