Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Detail)

v3.8.0.1
Earnings Per Share - Additional Information (Detail)
3 Months Ended
Mar. 31, 2018
shares
Stock option awards [Member]  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Antidilutive securities excluded from computation of diluted EPS (shares) 0