Loans Receivable and Allowance for Loan Losses - Schedule of FDIC Loss Sharing Receivable (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Receivables [Abstract]
Beginning balance	$ 8,272	$ 12,043	$ 10,046	$ 12,343
(Decreased)/Increased estimated cash flows	(156)	2,504	(1,622)	3,722
Other activity, net	983	380	1,972	1,232
Cash receipts from FDIC	(180)	(758)	(1,477)	(3,128)
Ending balance	8,919	14,169	8,919	14,169
Net amount reported as provision for loan losses	$ 2,886	$ 2,116	$ 7,253	$ 1,998