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 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Real estate loans [Member]
Jun. 30, 2013
Real estate loans [Member]
Jun. 30, 2014
Real estate loans [Member]
Jun. 30, 2013
Real estate loans [Member]
Jun. 30, 2014
Commercial and industrial loans [Member]
Jun. 30, 2013
Commercial and industrial loans [Member]
Jun. 30, 2014
Commercial and industrial loans [Member]
Jun. 30, 2013
Commercial and industrial loans [Member]
Dec. 31, 2013
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]                          
Balance at beginning of period $ 390 $ 6,043 $ 0 $ 8,306 $ 390 $ 5,769 $ 0 $ 7,977   $ 274 $ 0 $ 329 $ 0
Origination of loans held for sale 10,215 22,834 16,569 45,978 8,124 21,752 14,393 43,092 2,091 1,082 2,176 2,886  
Reclassification from loans receivable to loans held for sale   4,637   8,010   1,066   4,439   3,571   3,571  
Sales of loans held for sale (6,759) (30,956) (12,717) (59,721) (5,944) (25,213) (11,818) (52,120) (815) (5,743) (899) (7,601)  
Principal payoffs and amortization (4) (5) (10) (20) (2) (1) (7) (15) (2) (4) (3) (5)  
Balance at end of period $ 3,842 $ 2,553 $ 3,842 $ 2,553 $ 2,568 $ 3,373 $ 2,568 $ 3,373 $ 1,274 $ (820) $ 1,274 $ (820) $ 0