Preferred Stock (Series C Preferred Stock) (Narrative) (Details)		1 Months Ended	6 Months Ended	12 Months Ended
	Mar. 16, 2016 USD ($) $ / shares shares	Feb. 29, 2012 $ / shares item	Jun. 30, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares	Jan. 31, 2017 $ / shares	Mar. 11, 2015 $ / shares	Feb. 15, 2012 shares	Feb. 01, 2012 shares
Class of Stock [Line Items]
Number of closings for sale of preferred stock | item		2
Common stock warrants, exercise price						$ 1.52
Dividends paid in cash | $			$ 1,139,000
Series C Convertible Preferred Stock And Warrants [Member]
Class of Stock [Line Items]
Preferred stock, shares issued and sold | shares							3,750,000
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, liquidation preference per share			$ 10.00
Debt instrument original conversion price, per share	$ 1.60	$ 8.00
Preferred stock, fixed annual amount of dividend per share			0.625
Preferred stock, annual dividend rate				6.25%
Dividends unpaid and accrued | $				$ 4,492,000
Dividends unpaid and accrued per share				$ 1.497
Reduction of accumulated deficit | $	$ 20,366,000
Reduction of net earnings | $	$ 15,874,000
Warrants [Member]
Class of Stock [Line Items]
Common stock warrants, exercise price	$ 1.92	9.60
Common stock warrants, adjusted exercise price		$ 1.92
Percentage of adjustment to conversion ratio	120.00%
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Debt instrument original conversion price, per share			$ 1.60
Preferred stock, annual dividend rate	6.25%		6.25%
Percentage of voting stock	40.00%
Real Estate Strategies, L.P. [Member]
Class of Stock [Line Items]
Percentage of voting stock	49.00%
Dividends paid in cash | $	$ 1,484,000
Real Estate Strategies, L.P. [Member] | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares issued and sold | shares								3,000,000
Dividends unpaid and accrued | $	$ 4,947,000
Shares converted | shares	3,000,000
Real Estate Strategies, L.P. [Member] | Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares issued and sold | shares	245,156
Shares issued upon conversion | shares	3,000,000
Promissory Note [Member] | Real Estate Strategies, L.P. [Member]
Class of Stock [Line Items]
Interest rate	6.25%
Debt issued | $	$ 1,012,000
Forecast [Member] | Real Estate Strategies, L.P. [Member] | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Common stock warrants, exercise price					$ 1.92