Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Detail) (Fair Value, Measurements, Nonrecurring, USD $) In Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate loans (held-for-sale)	$ 1,836	$ 1,836
REO	9,880	9,880
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate loans (held-for-sale)	1,836	1,836
REO	9,880	9,880
Real Estate Loans Held For Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on assets measured at fair value on a non-recurring basis	8	11
REO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on assets measured at fair value on a non-recurring basis	$ (244)	$ (1,162)