Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Series A Non-Voting Convertible Preferred Stock [Member]	Dec. 31, 2012 Series A Non-Voting Convertible Preferred Stock [Member]
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred Stock, shares authorized	5,000,000	5,000,000
Preferred Stock, shares outstanding			2,709,300	2,709,300
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, shares issued	38,204,384	37,497,703
Common Stock, shares outstanding	38,188,893	37,482,212
Treasury stock, shares	15,491	15,491