UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	66,500,000	66,500,000
Common stock, shares issued	29,265,870	28,901,464
Common stock, shares outstanding	29,253,422	28,891,766
Treasury Stock, shares	12,448	9,698
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	27,438	26,502
Preferred stock, outstanding	27,438	26,502
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