Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Accounts receivable, allowance	$ 22,000	$ 27,000
Stockholders' deficit
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	1,500,000,000	1,050,000,000
Common Stock, shares issued	232,558,000	224,523,000
Common Stock, shares outstanding	232,558,000	224,523,000
Treasury shares	6,500,000	6,500,000
Series A-1 Preferred Stock [Member]
Stockholders' deficit
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	1,031,000	953,000
Preferred stock, shares outstanding	1,031,000	953,000
Preferred stock, liquidation preference	1,031,000
Series B Preferred Stock [Member]
Stockholders' deficit
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	14,000,000	14,000,000
Preferred stock, shares issued	11,102,000	10,058,000
Preferred stock, shares outstanding	11,102,000	10,058,000
Preferred stock, liquidation preference	16,653,000
Series C Preferred Stock [Member]
Stockholders' deficit
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	9,000,000	9,000,000
Preferred stock, shares issued	4,508,000	4,175,000
Preferred stock, shares outstanding	4,508,000	4,175,000
Preferred stock, liquidation preference	6,762,000
Series D-1 Preferred Stock [Member]
Stockholders' deficit
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	6,000,000	6,000,000
Preferred stock, shares issued	3,415,000	1,124,000
Preferred stock, shares outstanding	3,415,000	1,124,000
Preferred stock, liquidation preference	3,415,000
Series D-2 Preferred Stock [Member]
Stockholders' deficit
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	9,000,000	9,000,000
Preferred stock, shares issued	4,783,000	3,302,000
Preferred stock, shares outstanding	4,783,000	3,302,000
Preferred stock, liquidation preference	$ 4,783,000