Supplemental Disclosures for Consolidated Statements of Cash Flows - Reconciliation of Net Income (Loss) to Net Cash Provided by Operating Activities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Cash Flows [Abstract]
NET INCOME (LOSS)	$ 51,989	$ (710)	$ 6,667
Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities
Depreciation	2,776	2,827	2,830
Net amortization of premiums and discounts on securities	3,882	4,740	2,555
Other amortization and accretion	(172)	20	(35)
Change in loans available for sale, net	22,189	(20,143)	5,724
Provision for loan losses, net	3,188	10,796	1,974
Deferred tax benefit	(40,552)	(7)	(10)
Gain on sale of securities	(419)	(7,619)	(1,220)
Gain on sale of loans	(455)	(816)	(143)
Loss on sale or write down of foreclosed assets	1,295	3,548	3,812
Writedown on loan available for sale	0	1,238	0
Loss on disposition of equipment	1	774	58
Stock based employee benefit expense	190	196	123
Change in interest receivable	160	861	(561)
Change in interest payable	(27)	(524)	(2,258)
Change in prepaid expenses	4,562	2,601	2,748
Change in accrued taxes	(102)	(190)	(145)
Net change in other assets	792	(835)	585
Change in other liabilities	499	581	573
Net cash provided (used) by operating activities	49,852	(2,062)	23,741
Supplemental disclosure of non cash investing activities
Fair value adjustment to securities	(21,957)	(3,405)	5,530
Transfers from loans to other real estate owned	5,087	14,067	35,500
Transfers from loans to loans available for sale	379	10,321	0
Matured securities recorded as a receivable	0	3,100	3,630
Securities principal receivable recorded in other assets	159	0	0
Transfer from securities held for investment to available for sale	$ 13,818	$ 0	$ 0