Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Anti-dilutive Shares (Details)

v3.10.0.1
Earnings per Share - Anti-dilutive Shares (Details) - shares
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Restricted stock awards with performance only targets not yet achieved    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive (shares) 1,659,050 1,769,447
Stock options with performance only targets not yet achieved    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive (shares) 586,253 586,253
Anti-dilutive restricted stock awards and restricted stock units    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive (shares) 0 340,380
Anti-dilutive stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive (shares) 0 1,539,266