Stock Transactions Assumptions were used in the fair value calculations (Details) (USD $)	Feb. 05, 2008	Jan. 10, 2008	Oct. 22, 2007	May 01, 2007	Apr. 23, 2007
Risk free rate		3.91%	4.42%	4.64%	4.66%
Risk free minimum rate	1.93%
Risk free maximum rate	3.61%
Expected term (in years)		10		11	10
Expected term (in years) minimum	2		11
Expected term (in years) maximum	10		12
Expected volatility of stock	133.83%	133.83%	134.33%	131.13%	133.59%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%	0.00%
Suboptimal Exercise Behavior Multiple	$ 2.0	$ 2.0	$ 2.0	$ 2.0	$ 2.0
Number of Steps	100	100	100	100	100