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Deposits - Narrative (Detail) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Banking and Thrift [Abstract] |  |
Time deposits greater than $250,000 | $ 500.0 | $ 800.0
Brokered money market deposits | 556.5 | 654.8
Brokered certificates of deposit | 800.2 | 504.3
Demand deposit overdrafts reclassified as loans | $ 3.4 | $ 2.0

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- Definition Amount of brokered money market accounts. + References No definition available. + Details
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Balance Type: | credit
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- Definition Certificates of deposit brokered. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Time Deposits, Greater than $250,000 + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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- Definition Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=50488274&loc=d3e64164-112818 + Details
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