Fair Value Measurements (Details 3) (Measured on a non-recurring basis, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	$ 12,119	$ 18,463
Non-performing loans held-for-sale, net
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	2,604	54
Impaired loans
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	8,378	15,875
REO, net
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	$ 1,137	$ 2,534