CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2010	$ 12,310,650	$ 107	$ 91,068	$ 78,738,520	$ (66,519,045)
Balance (in Shares) at Dec. 31, 2010		107,172	91,068,357
Exercise of stock options	23,975	0	48	23,927	0
Exercise of stock options (in Shares)		0	48,084
Stock issued under equity incentive plans	0	0	4	(4)	0
Stock issued under equity incentive plans (in Shares)		0	2,836
Stock based compensation expense	256,124	0	0	256,124	0
Preferred stock dividends	(28,541)	0	550	136,951	(166,042)
Net loss	(6,360,103)	0	0	0	(6,360,103)
Balance at Dec. 31, 2011	6,202,105	107	91,670	79,155,518	(73,045,190)
Balance (in Shares) at Dec. 31, 2011		107,172	91,670,192
Stock issued under equity incentive plans	0	0	66	(66)	0
Stock issued under equity incentive plans (in Shares)		0	65,470
Stock based compensation expense	62,849	0	0	62,849	0
Preferred stock dividends	(174,155)	0	0	0	(174,155)
Net loss	(3,503,477)	0	0	0	(3,503,477)
Balance at Dec. 31, 2012	$ 2,587,322	$ 107	$ 91,736	$ 79,218,301	$ (76,722,822)
Balance (in Shares) at Dec. 31, 2012		107,172	91,735,662