Loans - Schedule of Modified TDRs (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Receivables [Abstract]
Extended maturities	$ 15,932
Maturity and interest rate adjustment	23,552
Forbearance	1,228
Other concession(s)	7,887	[1]
Total	$ 48,599

[1] Other concessions include concessions or a combination of concessions that do not consist of maturity extensions, interest rate adjustments, forbearance or covenant modifications.