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Deposits - Scheduled Maturities of Certificates of Deposit (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Banking and Thrift [Abstract] |  |
Within one year | $ 424,448 | $ 439,035
One to three years | 150,280 | 134,941
Three to five years | 56,529 | 75,751
Five years and thereafter | 3,552 | 1,456
Certificates of deposit | $ 634,809 | $ 651,183

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- Definition Time deposit maturities, years five and thereafter + References No definition available. + Details
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- Definition Time deposit maturities, years one to three + References No definition available. + Details
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- Definition Time deposit maturities, years three to five + References No definition available. + Details
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- Definition Amount of interest-bearing domestic certificate of deposit liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph D-E + Details
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