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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | $ 29,858 | $ 27,339
Total noninterest income out-of-scope of ASC 606 | 1,419 | 1,411
Total noninterest income | 31,277 | 28,750
Insurance and Other Financial Services Revenue [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | 6,504 | 6,770
Service Charges on Deposit Accounts [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | 3,972 | 3,977
ATM and Debit Card Fees [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | 5,273 | 4,950
Retirement Plan Administration Fees [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | 5,339 | 4,172
Trust [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | 4,878 | 4,532
Other [Member] |  |
Noninterest Income [Abstract] |  |
Total noninterest income in-scope of ASC 606 | $ 3,892 | $ 2,938

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- Definition The amount of noninterest income out-of-scope of Topic 606. + References No definition available. + Details
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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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