CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	27,603,336	27,541,491
Common stock, shares outstanding	27,603,336	27,541,491
Treasury stock, shares	61,845	61,845