(1) Summary of Significant Accounting Policies (Details 1) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Basic EPS
Net Loss (Numerator)	$ (2,346,276)	$ (3,568,051)	$ (6,620,586)	$ (2,449,408)	$ (6,114,804)	$ (5,398,176)	$ (5,889,039)	$ (5,966,265)	$ (14,984,321)	$ (23,368,283)	$ (35,375,621)
Shares (Denominator)									47,408,995	46,648,928	45,549,314
Basic net loss per share (in dollars per share)	$ (0.05)	$ (0.08)	$ (0.14)	$ (0.05)	$ (0.13)	$ (0.12)	$ (0.13)	$ (0.13)	$ (0.32)	$ (0.50)	$ (0.78)
Effect of dilutive securities:
Stock options and restricted stock									0	0	0
Diluted EPS
Net Loss (Numerator)	$ (2,346,276)	$ (3,568,051)	$ (6,620,586)	$ (2,449,408)	$ (6,114,804)	$ (5,398,176)	$ (5,889,039)	$ (5,966,265)	$ (14,984,321)	$ (23,368,283)	$ (35,375,621)
Diluted Shares Outstanding									47,408,995	46,648,928	45,549,314
Diluted net loss per share (in dollars per share)	$ (0.05)	$ (0.08)	$ (0.14)	$ (0.05)	$ (0.13)	$ (0.12)	$ (0.13)	$ (0.13)	$ (0.32)	$ (0.50)	$ (0.78)