Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share - Anti-dilutive Shares (Details)

v3.10.0.1
Net Income Per Share - Anti-dilutive Shares (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities (in shares) 0 789 0 1,277
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities (in shares) 0 789 0 789
Performance stock units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities (in shares) 0 0 0 170
Non-vested restricted stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities (in shares) 0 0 0 318