Condensed Balance Sheets (Parenthetical) (USD $)			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Series A Preferred Stock	Dec. 31, 2012 Series A Preferred Stock	Mar. 31, 2013 Series B Preferred Stock	Dec. 31, 2012 Series B Preferred Stock
Cumulative convertible preferred stock, dividend (as a percent)			8.00%	8.00%	8.00%	8.00%
Cumulative convertible preferred stock, par value (in dollars per share)			$ 0.001	$ 0.001	$ 0.001	$ 0.001
Cumulative, convertible preferred stock, shares authorized			4,694,375	4,694,375	10,131,879	10,131,879
Cumulative, convertible preferred stock, shares issued			4,694,375	4,694,375	10,131,879	10,131,879
Cumulative, convertible preferred stock, shares outstanding			4,694,375	4,694,375	10,131,879	10,131,879
Cumulative, convertible preferred stock, liquidation value (in dollars)			$ 8,026,281		$ 56,585,767
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	22,000,000	22,000,000
Common stock, shares issued	3,010,101	3,010,101
Common stock, shares outstanding	3,010,101	3,010,101