Preferred Stock (Series C Convertible Preferred Stock And Warrants) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Feb. 28, 2017	Jan. 24, 2017	Mar. 16, 2016	Mar. 31, 2017	Mar. 31, 2016	Feb. 29, 2012
Class of Stock [Line Items]
Preferred stock, deemed dividend					$ 12,426
Warrant issuance costs				$ 289	$ 12
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, deemed dividend			$ 20,366
Preferred stock dividends, adjustment to net earnings attributable to common shareholders			$ 15,874
New Warrants [Member]
Class of Stock [Line Items]
Shares issued upon conversion		23,160
Common stock warrants, exercise price		$ 0.0065
Warrant expiration		Jan. 24, 2019
Warrants [Member]
Class of Stock [Line Items]
Common stock warrants, exercise price						$ 62.40
Warrant issuance costs		$ 289
Real Estate Strategies, L.P. [Member] | Series C Preferred Stock [Member]
Class of Stock [Line Items]
Shares converted			3,000,000
Real Estate Strategies, L.P. [Member] | Warrants [Member]
Class of Stock [Line Items]
Shares converted		576,923
Common Stock [Member]
Class of Stock [Line Items]
Shares issued upon conversion	6,004,957
Number of shares called by warrant		23,160