Scheduled Maturities of Certificates of Deposit of $250 Thousand or More (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Time deposit of $250 thousand or more
Three months or less	$ 6,274
Over three through six months	2,687
Over six through twelve months	10,890
Over twelve months	21,698
Total	$ 41,549	$ 41,350

Contractual Maturities, Time Deposits, $250,000 or More [Abstract]

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Contractual Maturities, Time Deposits, $250,000 or More, after 12 Months

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Contractual Maturities, Time Deposits, $250,000 or More, Six Months Through 12 Months

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Contractual Maturities, Time Deposits, $250,000 or More, Three Months or Less

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Contractual Maturities, Time Deposits, $250,000 or More, Three Months Through Six Months

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Time Deposits, $250,000 or More

No definition available.