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Deposits - Maturities of Fixed-Rate Time Deposits (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Time Deposits $250,000 and Over [Member]  
Time Deposits By Maturity [Line Items]  
2016 $ 4,841
2017 3,307
Total 8,148
Other Time Deposits [Member]  
Time Deposits By Maturity [Line Items]  
2016 56,238
2017 9,237
2018 2,538
2019 1,578
2020 4,591
Thereafter 98
Total $ 74,280