CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock
Balances at Dec. 31, 2013	$ 25,243,388	$ 19,824	$ 216,703,028	$ (191,470,046)	$ (9,418)
Balances (in shares) at Dec. 31, 2013	19,820,258	19,820,258
Increase (Decrease) in Stockholders' Equity
Net loss	(6,588,479)			(6,588,479)
Common stock issued, net of issuance costs	11,183,071	4,484	11,178,587
Common stock issued, net of issuance costs (in shares)		4,483,350
Common stock issued for loan interest and fees	501,250	184	501,066
Common stock issued for loan interest and fees (in shares)		184,143
Common stock issued for settlement of litigation	333,847	119	333,728
Common stock issued for settlement of litigation (in shares)		119,231
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes	463,274	80	463,194
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)		79,733
Minimum withholding taxes on net share settlements of equity awards	(87,220)		(87,220)
Balances at Jun. 30, 2014	$ 31,049,131	$ 24,691	$ 229,092,383	$ (198,058,525)	$ (9,418)
Balances (in shares) at Jun. 30, 2014	24,686,715	24,686,715