Quarterly report pursuant to Section 13 or 15(d)

Computations of Basic and Diluted Earnings Per Share (Parenthetical) (Detail)

v3.20.2
Computations of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share Disclosure [Line Items]        
Weighted average shares of participating restricted stock 917,000 763,000 771,000 685,000
Restricted Stock Units (RSUs)        
Earnings Per Share Disclosure [Line Items]        
Common equivalent shares for restricted stock units 475,000 223,000 [1] 28,000 271,000 [1]
[1] For the three months ended June 30, 2020, approximately 475 common equivalent shares for restricted stock units were excluded because they were anti-dilutive.  For the six months ended June 30, 2020, approximately 28 common equivalent shares for restricted stock units were excluded because they were anti-dilutive.