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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, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other noninterest income: |  |  |
Income from bank-owned life insurance | $ 18,179 | $ 14,946 | $ 12,424
Credit-related fees | 11,255 | 11,399 | 11,065
Income from derivatives | 12,814 | 12,958 | 5,368
Other miscellaneous income | 13,155 | 14,635 | 14,929
Total other noninterest income | 55,403 | 53,938 | 43,786
Other noninterest expense: |  |  |
Advertising | 13,011 | 15,251 | 12,334
Corporate value and franchise taxes | 16,578 | 15,949 | 13,595
Entertainment and contributions | 9,865 | 10,777 | 11,359
Telecommunication and postage | 14,991 | 14,588 | 14,659
Printing and supplies | 5,063 | 4,947 | 5,548
Travel expenses | 2,297 | 5,278 | 5,338
Tax credit investment amortization | 3,843 | 4,943 | 5,166
Other retirement expense | (25,133) | (16,561) | (18,661)
Other miscellaneous expense | 26,790 | 37,282 | 31,355
Total other noninterest expense | $ 67,305 | $ 92,454 | $ 80,693

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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