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Other Non-Interest Income and Expense (Other Non-Interest Income and Expense) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Other Income and Expenses [Abstract] |  |  |
Other | $ 41,144 | $ 35,656 | $ 32,256
Total other non-interest income | 41,144 | 35,656 | 32,256
Advertising, promotions and public relations | 27,677 | 28,858 | 28,998
Professional services | 26,664 | 26,283 | 27,365
Check card expense | 15,572 | 13,008 | 11,923
Travel/meals and entertainment | 14,393 | 15,346 | 14,813
Other | 94,682 | 82,066 | 84,557
Total other non-interest expense | $ 178,988 | $ 165,561 | $ 167,656

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- Definition The total expense recognized in the period for promotion, public relations, and brand or product advertising. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Amount of noninterest expense classified as other. + 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 210.9-04.14) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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