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Deposits (Scheduled Maturities of Time Deposits in Amounts of $100,000 or More) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Deposits [Abstract]  
Due within 3 months or less $ 228,010us-gaap_ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess
Due after 3 months and within 6 months 97,194us-gaap_ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths
Due after 6 months and within 12 months 142,973us-gaap_ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months
Due after 12 months 75,716us-gaap_ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months
Time deposits, $100,000 or more, total $ 543,893us-gaap_TimeDeposits100000OrMore