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Revenue Recognition - Schedule of Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 17,490	$ 14,944	$ 35,483	$ 31,671
Noninterest Income (out-of-scope of ASC 606)	1,368	2,233	3,358	4,466
Total Noninterest Income	18,858	17,177	38,841	36,137
Commissions and Fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	7,488	7,024	15,171	14,409
Installment Billing
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(52)	(49)	(17)	(79)
Refund of Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	31	(226)	11	(353)
Contract Liabilities/Deferred Revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(237)	(204)	(237)	(208)
Contingent Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	824	710	2,292	1,531
Subtotal Insurance Revenues
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	8,054	7,255	17,220	15,300
Trust and Asset Management
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	3,334	2,790	6,700	5,728
Mutual Fund & Investment Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,383	1,130	2,690	2,394
Subtotal Investment Service Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	4,717	3,920	9,390	8,122
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,471	1,248	2,941	3,231
Card Services Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	2,951	2,283	5,334	4,466
Other
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 297	$ 238	$ 598	$ 552

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