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Noninterest Income and Noninterest Expense (Components of Other Noninterest Income and Other Noninterest Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other noninterest income: |  |  |
Income from bank-owned life insurance | $ 12,424 | $ 11,473 | $ 13,596
Credit-related fees | 11,065 | 11,140 | 9,926
Other miscellaneous income | 20,297 | 19,684 | 16,146
Total other noninterest income | 43,786 | 42,297 | 39,668
Other noninterest expense: |  |  |
Advertising | 12,334 | 15,031 | 10,938
Corporate value and franchise taxes | 13,595 | 12,797 | 8,741
Entertainment and contributions | 11,359 | 8,260 | 7,122
Telecommunications and postage | 14,659 | 14,686 | 13,146
Other retirement expense | (18,661) | (15,249) | (10,496)
Other miscellaneous expense | 47,407 | 46,548 | 45,313
Total other noninterest expense | $ 80,693 | $ 82,073 | $ 74,764

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- Definition Telecommunications and Postage Expense + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies. + 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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