Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Additional Information (Details)

v3.2.0.727
Net Loss Per Share - Additional Information (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Earnings Per Share [Abstract]        
Shares excluded from dilutive shares outstanding because their effect was anti-dilutive 667,244 1,336,749 1,106,796 1,788,923