Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) Per Share - Additional Information (Detail)

v3.4.0.3
Earnings (Loss) Per Share - Additional Information (Detail) - shares
shares in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Stock Options [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Shares with anti-dilutive effect 0.1 0.3