Fair Value Measurements (Details 4) (Measured on a non-recurring basis, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	$ 2,969	$ 7,863
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	188	533
Impaired loans
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	1,964	6,419
Mortgage Servicing Rights [Member]
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	513	13
REO, net
Fair Value of Financial Instruments
Losses recognized on assets measured at fair value on a non-recurring basis	$ 304	$ 898