Non-Performing Residential Mortgage Loans Held-for-Sale (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Non-performing residential mortgage loans held-for-sale	$ 186,312,000		$ 186,312,000
Amount of loan charge-off	13,631,000	8,104,000	22,466,000	21,458,000
Residential | Non-performing loans held-for-sale, net
Loans held-for-sale, recorded investment	195,000,000		195,000,000
Non-performing residential mortgage loans held-for-sale	186,300,000		186,300,000
Amount of loan charge-off			$ 8,700,000