Fair Value Measurements And Derivative Instruments (Narrative) (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 16, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Mar. 11, 2015	Feb. 29, 2012
Fair Value Measurements And Derivative Instruments [Line Items]
Common stock warrants, exercise price							$ 1.52
Net gain on derivatives and convertible debt		$ 26,000	$ 7,895,000	$ 6,305,000	$ 8,008,000
Transfers between levels		0	0	0	0
Interest Rate Instruments [Member]
Fair Value Measurements And Derivative Instruments [Line Items]
Net gain on derivatives and convertible debt		$ 71,000	$ 7,895,000	$ 6,529,000	$ 8,008,000
Series C Preferred Stock [Member]
Fair Value Measurements And Derivative Instruments [Line Items]
Preferred stock, annual dividend rate				6.25%		6.25%
Debt instrument original conversion price, per share	$ 1.60							$ 8.00
Warrants [Member]
Fair Value Measurements And Derivative Instruments [Line Items]
Common stock warrants, exercise price	$ 1.92							9.60
Common stock warrants, adjusted exercise price								$ 1.92
Adjustment to additional paid in capital, warrant	$ 611,000
Percentage of adjustment to conversion ratio	120.00%