CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Depreciation of real estate subject to sales contracts at cost (in dollars)	$ 0	$ 2,300
Performing	71,376	84,863
Deferred revenue from related parties	71,021	51,356
Allowance for doubtful accounts (in dollars)	$ 1,825	$ 1,990
Preferred stock, liquidation preference per share (in dollars per share)	$ 100
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized	10,000,000	10,000,000
Common stock, issued	8,717,967	8,717,967
Common stock, outstanding	8,717,767	8,717,767
Treasury stock, shares	200	200
Related Party [Member]
Performing	$ 64,181	$ 77,853
Deferred revenue from related parties	50,645	51,356
Allowance for doubtful accounts (in dollars)	1,825	1,825
Accounts payable and other liabilities to related parties (in dollars)	$ 3,060	$ 4,909
Series C Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized	10,000,000	10,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series D Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized	100,000	100,000
Preferred stock, issued	100,000	100,000
Preferred stock, outstanding	100,000	100,000
Preferred stock, liquidation preference per share (in dollars per share)	$ 100	$ 100