Common Stock Warrants (Details)	Dec. 31, 2016 $ / shares	Dec. 31, 2015 $ / shares	Nov. 08, 2009 shares
Exercise Prices Details:
Series B	$ 0.11
Series D	$ 1.60
Company issued Series H with par value $7 Warrants | shares			689,159
Weighted average contractual life for all Mentor warrants	21.5	22.4
Weighted average outstanding warrant exercise price per share	$ 2.02	$ 1.88