Quarterly report pursuant to Section 13 or 15(d)

Net Income per Share - Additional Information (Details)

v3.7.0.1
Net Income per Share - Additional Information (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
May 23, 2017
Earnings Per Share [Abstract]          
Shares excluded from dilutive shares outstanding because their effect was anti-dilutive 27,422 165,166 362,522 606,700  
Warrants strike price (in dollars per share)         $ 57.58