CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2008	$ 93,978	$ 210,007,468	$ (192,123,901)	$ (2,279,238)	$ 15,698,307
Balance (in shares) at Dec. 31, 2008	93,978,448
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock and warrants issued in connection with private placements	15,253	14,230,710	0	0	14,245,963
Common stock and warrants issued in connection with private placements (in shares)	15,252,040
Issuance of stock options/warrants for compensation and services	0	2,867,638	0	0	2,867,638
Common stock issued for services	50	42,950	0	0	43,000
Common stock issued for services (in shares)	50,000
Options and warrants exercised	258	292,825	0	0	293,083
Options and warrants exercised (in shares)	258,333
Net profit (loss)	0	0	(4,800,308)	0	(4,800,308)
Balance at Dec. 31, 2009	109,539	227,441,591	(196,924,209)	(2,279,238)	28,347,683
Balance (in shares) at Dec. 31, 2009	109,538,821
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock options/warrants for compensation and services	0	1,620,088	0	0	1,620,088
Common stock issued for services	50	44,450	0	0	44,500
Common stock issued for services (in shares)	50,000
Options and warrants exercised	251	146,993	0	0	147,244
Options and warrants exercised (in shares)	251,624
Net profit (loss)	0	0	408,460	0	408,460
Balance at Dec. 31, 2010	109,840	229,253,122	(196,515,749)	(2,279,238)	30,567,975
Balance (in shares) at Dec. 31, 2010	109,840,445				109,840,445
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock options/warrants for compensation and services	0	1,387,701	0	0	1,387,701
Common stock and warrants issued in connection with a public offering	39,200	6,683,739	0	0	6,683,739
Common stock issued for services (in shares)	39,200,000
Options and warrants exercised	17	(17)	0	0	0
Options and warrants exercised (in shares)	17,440
Net profit (loss)	0	0	(14,424,545)	0	(14,424,545)
Balance at Dec. 31, 2011	$ 149,057	$ 237,324,545	$ (210,940,294)	$ (2,279,238)	$ 24,254,070
Balance (in shares) at Dec. 31, 2011	149,057,885				149,060,885