CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Accounts receivable, net of allowance for doubtful accounts	$ 1,000	$ 3,000
Shareholders' equity:
Common stock, par value	$ .01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	91,853,499	94,077,599
Common stock, shares outstanding	91,846,795	94,070,895
Treasury stock, shares	6,704	6,704
Series B Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	750,000	750,000
Preferred stock, par value per share	$ 0.1	$ 0.1
Preferred stock, shares issued	389,400	239,400
Preferred stock, shares outstanding	239,400	239,400
Liquidation preference	$ 607,000	$ 607,000
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	12,000	12,000
Preferred stock, par value per share	$ 0.01	$ 0.1
Preferred stock, shares issued	12,000	12,000
Preferred stock, shares outstanding	12,000	12,000
Liquidation preference	$ 12,000,000	$ 12,240,000
Series F Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	2,000	2,000
Preferred stock, par value per share	$ 0.1	$ 0.1
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	2,000	2,000
Liquidation preference	$ 2,000,000
Series G Preferred Stock [Member]
Shareholders' equity:
Preferred stock, shares authorized	6,120	6,120
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares issued	6,021	0
Preferred stock, shares outstanding	6,021	0
Liquidation preference	$ 6,021,000