UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	66,500,000	66,500,000
Common stock, shares issued	29,785,475	29,386,882
Common stock, shares outstanding	29,785,475	29,386,882
Series B Preferred Stock
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Preferred stock, shares designated	100,000	100,000
Preferred stock, issued	28,503	28,503
Preferred stock, outstanding	28,503	28,503
Series A Junior Participating Preferred Stock
Preferred stock, issued	0	0
Preferred stock, shares authorized	665,000	665,000
Preferred stock, outstanding	0	0
Preferred stock, par value	$ 0.001	$ 0.001