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Revenue Recognition - Disaggregation of Noninterest Income (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | $ 16,232 | $ 15,390
Noninterest Income (out-of-scope of ASC 606) | 1,598 | 1,850
Total Noninterest Income | 17,830 | 17,240
Commissions and Fees |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 6,878 | 6,741
Installment Billing |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | (71) | 0
Refund of Commissions |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | (23) | 0
Contract Liabilities/Deferred Revenue |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 0 | (273)
Contingent commissions |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 610 | 650
Subtotal Insurance Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 7,394 | 7,118
Trust and Asset Management |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 2,814 | 2,444
Mutual Fund & Investment Income |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 1,432 | 1,347
Subtotal Investment Service Income |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 4,246 | 3,791
Service Charges on Deposit Accounts |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 2,132 | 2,167
Card Services Income |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | 2,146 | 2,009
Other |  |
Disaggregation of Revenue [Line Items] |  |
Noninterest Income (in-scope of ASC 606) | $ 314 | $ 305

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- Definition 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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