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Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock Shares Held at Federal Reserve Bank and Federal Home Loan Bank (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Disclosure Shares Held At Federal Reserve Bank And Federal Home Loan Bank [Abstract]    
FHLB stock holdings $ 17,250 $ 25,000
FRB stock holdings $ 39,741 $ 28,496