CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current Assets:
Accounts receivable, net of allowance for doubtful accounts	$ 3	$ 3
Shareholders' equity:
Common stock, par value	$ .01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	94,077,599	93,513,854
Common stock, shares outstanding	94,070,895	93,507,150
Treasury stock, shares	6,704
Series B Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	4,000,000	4,000,000
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares issued	750,000	389,400
Preferred stock, shares outstanding	239,400	239,400
Liquidation preference	$ 607	$ 607
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	12,000	0
Preferred stock, par value per share	$ .01	$ 0.01
Preferred stock, shares issued	12,000	0
Preferred stock, shares outstanding	12,000	0
Liquidation preference	$ 12,240	$ 0