Quarterly report pursuant to Section 13 or 15(d)

Loans - Summary of Interest Foregone on Impaired Loans (Detail)

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Loans - Summary of Interest Foregone on Impaired Loans (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Receivables [Abstract]        
Interest income that would have been recognized had impaired loans performed in accordance with their original terms $ 718 $ 1,177 $ 1,611 $ 1,917
Less: Interest income recognized on impaired loans (598) (800) (1,287) (1,510)
Interest foregone on impaired loans $ 120 $ 377 $ 324 $ 407