Equity (Details 5) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Series A-1 Preferred Stock [Member]
Preferred Stock Issue Date	May 2008
Annual dividend	8.00%
Preferred Stock Annual Dividend Payable Method Description	Quarterly in Arrears
Liquidation preference	$ 1.00
Conversion price	$ 0.1400
Current Period Dividends in Kind	19,000
Common Shares Issued In Connection With Conversion Of Preferred Shares	146,000
Total Preferred Shares Outstanding	972,000	953,000
Common Shares to be Issued if Fully Converted	6,943,000
Series B Preferred Stock [Member]
Preferred Stock Issue Date	August 2010
Annual dividend	10.00%
Preferred Stock Annual Dividend Payable Method Description	Quarterly in Arrears
Liquidation preference	1.50
Conversion price	$ 0.0433
Current Period Dividends in Kind	248,000
Common Shares Issued In Connection With Conversion Of Preferred Shares	140,000
Total Preferred Shares Outstanding	10,307,000	10,058,000
Common Shares to be Issued if Fully Converted	238,037,000
Series C Preferred Stock [Member]
Preferred Stock Issue Date	December/March 2011
Annual dividend	10.00%
Preferred Stock Annual Dividend Payable Method Description	Quarterly in Arrears
Liquidation preference	1.50
Conversion price	$ 0.0225
Current Period Dividends in Kind	103,000
Common Shares Issued In Connection With Conversion Of Preferred Shares	39,000
Total Preferred Shares Outstanding	4,278,000	4,175,000
Common Shares to be Issued if Fully Converted	190,133,000
Series D-1 Preferred Stock [Member]
Preferred Stock Issue Date	November 2012
Annual dividend	10.00%
Preferred Stock Annual Dividend Payable Method Description	Quarterly in Arrears
Liquidation preference	1.00
Conversion price	$ 0.0225
Current Period Dividends in Kind	28,000
Total Preferred Shares Outstanding	1,152,000	1,124,000
Common Shares to be Issued if Fully Converted	51,200,000
Series D-2 Preferred Stock [Member]
Preferred Stock Issue Date	November 2012
Annual dividend	10.00%
Preferred Stock Annual Dividend Payable Method Description	Quarterly in Arrears
Liquidation preference	1.00
Conversion price	$ 0.0500
Current Period Dividends in Kind	$ 81,000
Total Preferred Shares Outstanding	3,384,000	3,302,000
Common Shares to be Issued if Fully Converted	67,680,000