Real Estate Held-for-Investment and Real Estate Held-for-Sale (Real Estate Held-For-Sale )(Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Long Lived Assets Held-for-sale [Line Items]
Real estate held for sale	$ 33,444	$ 33,971	$ 38,888	$ 45,637
Land [Member]
Long Lived Assets Held-for-sale [Line Items]
Real estate held for sale	21,101	18,268
Rental properties [Member]
Long Lived Assets Held-for-sale [Line Items]
Real estate held for sale	6,123	6,168
Residential single-family [Member]
Long Lived Assets Held-for-sale [Line Items]
Real estate held for sale	5,023	6,447
Other [Member]
Long Lived Assets Held-for-sale [Line Items]
Real estate held for sale	$ 1,197	$ 3,088