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Revenue Recognition - Schedule of Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 17,356	$ 17,739	$ 49,027	$ 51,658
Noninterest Income (out-of-scope of ASC 606)	1,531	1,795	5,997	5,803
Total Noninterest Income	18,887	19,534	55,024	57,461
Commissions and Fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	8,136	7,918	22,545	21,984
Installment Billing
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	175	150	96	58
Refund of Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(104)	(51)	(458)	(31)
Contract Liabilities/Deferred Revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	0	0	(208)	(188)
Contingent Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	709	500	2,241	2,491
Subtotal Insurance Revenues
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	8,916	8,517	24,216	24,314
Trust and Asset Management
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	3,070	2,920	8,798	8,417
Mutual Fund & Investment Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,222	1,255	3,616	3,749
Subtotal Investment Service Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	4,292	4,175	12,414	12,166
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,444	2,191	4,675	6,210
Card Services Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	2,419	2,550	6,885	8,090
Other
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 285	$ 306	$ 837	$ 878

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