Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Additional Information (Details)

v3.8.0.1
Earnings per Share - Additional Information (Details) - shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Earnings Per Share [Abstract]    
Participating securities (in shares) 0 0
Anti-dilutive common stock equivalents (in shares) 43,734,000 63,668,000