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, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Balance at beginning of period $ 3,842 $ 2,553   $ 8,306
Origination of loans held for sale 18,229 17,135 34,798 63,112
Reclassification from loans receivable to loans held for sale       8,009
Reclassification from loans held for sale to loans receivable   (2,534)   (2,534)
Sales of loans held for sale (14,268) (11,906) (26,986) (71,626)
Principal payoffs and amortization (46) (20) (55) (39)
Balance at end of period 7,757 5,228 7,757 5,228
Real estate loans [Member]
        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Balance at beginning of period 2,568 2,137   7,977
Origination of loans held for sale 15,198 15,634 29,591 58,725
Reclassification from loans receivable to loans held for sale       7,593
Reclassification from loans held for sale to loans receivable   (2,118)   (2,118)
Sales of loans held for sale (12,135) (10,725) (23,953) (67,235)
Principal payoffs and amortization (20) (20) (27) (34)
Balance at end of period 5,611 4,908 5,611 4,908
Commercial and industrial loans [Member]
        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Balance at beginning of period 1,274 416   329
Origination of loans held for sale 3,031 1,501 5,207 4,387
Reclassification from loans receivable to loans held for sale       416
Reclassification from loans held for sale to loans receivable   (416)   (416)
Sales of loans held for sale (2,133) (1,181) (3,033) (4,391)
Principal payoffs and amortization (26)   (28) (5)
Balance at end of period $ 2,146 $ 320 $ 2,146 $ 320