Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	18,337,683	16,982,642
Common stock, shares outstanding	18,337,683	16,982,642
Series A junior participating preferred stock
Preferred Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized	30,000	30,000
Preferred Stock, Shares outstanding	0	0
Preferred stock
Preferred Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized	39,970,000	39,970,000
Preferred Stock, Shares outstanding	0	0