Annual report pursuant to Section 13 and 15(d)

FHLB Advances and Other Borrowings - Summary of Contractual Maturities Pertaining to FHLB (Detail)

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FHLB Advances and Other Borrowings - Summary of Contractual Maturities Pertaining to FHLB (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Federal Home Loan Banks [Abstract]    
Year of Maturity, 2017, Amount $ 315,000 $ 170,000
Total FHLB advances $ 315,000 $ 170,000
Year of Maturity, 2017, Weighted-Average Interest Rate 0.55%  
Year of Maturity, Total, Weighted-Average Interest Rate 0.55%