Quarterly report pursuant to Section 13 or 15(d)

Loans - Loans Receivable to Loans Held for Sale (Detail)

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Loans - Loans Receivable to Loans Held for Sale (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]        
Loans held for sale, at beginning of period $ 12,833 $ 4,158 $ 2,874 $ 5,451
Originations 17,689 21,331 60,248 59,273
Reclassification from loans receivable     0 360
Sales (24,090) (20,607) (56,665) (60,150)
Principal payoffs and amortization (7) (11) (32) (63)
Loans held for sale, at end of period 6,425 4,871 6,425 4,871
Real estate loans [Member]        
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]        
Loans held for sale, at beginning of period 9,293 2,067 840 3,323
Originations 11,272 13,867 40,120 37,601
Reclassification from loans receivable       360
Sales (15,968) (12,199) (36,361) (37,534)
Principal payoffs and amortization (2) (3) (4) (18)
Loans held for sale, at end of period 4,595 3,732 4,595 3,732
Commercial and industrial loans [Member]        
Financing Receivable, Reclassification From Portfolio Loans To Loans Held For Sale [Roll Forward]        
Loans held for sale, at beginning of period 3,540 2,091 2,034 2,128
Originations 6,417 7,464 20,128 21,672
Reclassification from loans receivable       0
Sales (8,122) (8,408) (20,304) (22,616)
Principal payoffs and amortization (5) (8) (28) (45)
Loans held for sale, at end of period $ 1,830 $ 1,139 $ 1,830 $ 1,139