Loans - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2013 TDRs Loan	Dec. 31, 2012 TDRs Loan	Dec. 31, 2011	Feb. 01, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Adjustable rate loans	$ 65,795,000
Fixed and adjustable rate loans		142,860,000
Net charge-offs				60,200,000
Provision for loan losses				48,100,000
Income recorded on non-accrual loans		0	0	0
Troubled debt restructurings impaired loans		30,864,000	27,183,000
Number of TDR's on accrual status		10	7
Troubled debt restructurings carrying amount accrual status		17,564,000	19,941,000
Payment default under modified terms		45 days
Number of loan modified as TDR's		1	0
Loan totaling modified as TDR's		4,069,000	0
Trouble debt restructuring charge offs		269,000	2,595,000
Due from officers or stockholders		36,642,000	31,338,000
Loans for individuals		12,840,000	1,269,000
Decreases due to changes in composition		7,536,000	15,047,000
Performing and non performing loans held for sale					474,000,000
Loans held for sale		0	2,317,000
Pretax gain on sale	15,935,000
Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Maturity terms of available loans		6 months
Maturity terms of available loans, extension option		6 months
Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Maturity terms of available loans		15 years
Maturity terms of available loans, extension option		3 years
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Maximum multi-family loans per transaction		$ 7,500,000
Maturity terms of available loans, extension option		5 years
Debt amortization period		30 years
Maximum loan to value ratio		75.00%
Residential [Member] | Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Maturity terms of available loans		7 years
Debt service coverage ratio		1.0
Residential [Member] | Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Maturity terms of available loans		10 years
Debt service coverage ratio		1.2