Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Preferred Stock, par value	0.001	0.001
Preferred Stock, shares authorized	5,000,000	5,000,000
Common Stock, par value	0.001	0.001
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, shares issued	38,007,205	37,497,703
Common Stock, shares outstanding	37,991,714	37,482,212
Treasury Stock, shares	15,491	15,491
Series A Non-Voting Convertible Preferred Stock
Preferred Stock, shares outstanding	2,709,300	2,709,300