Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Additional Information (Detail)

v3.19.3.a.u2
Earnings per Share - Additional Information (Detail) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Stock option awards      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of diluted EPS (shares) 0 0 0
Unvested restricted stock      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of diluted EPS (shares) 0 0 0