Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Additional Information (Details)

v3.10.0.1
Earnings per Share - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Earnings Per Share [Abstract]        
Participating securities (in shares) 0 0 0 0
Anti-dilutive common stock equivalents (in shares) 21,821,000 54,555,000 13,897,000 42,481,000