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Other Noninterest Income and Other Noninterest Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Income | $ 47,841 | $ 34,170 | $ 36,359
Other Noninterest Expense | 186,199 | 180,715 | 172,440
Gain On Termination of Forward Starting Advance | 12,500 |  |
PCI Loans |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Proceeds from Recoveries of Loans Previously Charged off | 21,100 | 20,100 | 21,200
Processing Fees Paid To Third Parties |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 25,673 | 18,976 | 18,779
Cardholder Reward Programs |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 9,956 | 10,615 | 11,069
Telecommunication |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 12,172 | 14,496 | 14,406
Consultant |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 14,963 | 10,931 | 8,925
Core Deposit Intangible Amortization |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 17,194 | 16,851 | 18,892
Advertising |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | 11,227 | 10,239 | 12,431
Other Expense |  |  |
Other Operating Cost and Expense [Line Items] |  |  |
Other Noninterest Expense | $ 95,014 | $ 98,607 | $ 87,938

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- Definition Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights. + 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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