Revenue Recognition - Schedule of Disaggregation of Noninterest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of ASC 606 (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 14,944	$ 16,695	$ 31,671	$ 33,919
Noninterest Income (out-of-scope of ASC 606)	2,233	1,825	4,466	4,008
Total Noninterest Income	17,177	18,520	36,137	37,927
Commissions and Fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	7,024	6,967	14,409	14,066
Installment Billing
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(49)	(21)	(79)	(92)
Refund of Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(226)	32	(353)	20
Contract Liabilities/Deferred Revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(204)	(188)	(208)	(188)
Contingent Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	710	962	1,531	1,991
Subtotal Insurance Revenues
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	7,255	7,752	15,300	15,797
Trust and Asset Management
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	2,790	2,646	5,728	5,496
Mutual Fund & Investment Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,130	1,261	2,394	2,495
Subtotal Investment Service Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	3,920	3,907	8,122	7,991
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	1,248	2,021	3,231	4,019
Card Services Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	2,283	2,750	4,466	5,540
Other
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 238	$ 265	$ 552	$ 572

Noninterest Income, Other Operating Income, Not In Scope For Topic 606

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+ References

No definition available.

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The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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