Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation - Stock Option Activity and Related Information (Detail)

v3.22.0.1
Stock Based Compensation - Stock Option Activity and Related Information (Detail) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Outstanding at beginning of year, Options 24,750 24,750 34,500
Granted, Options 0 0 0
Exercised, Options 0 0 (9,750)
Adjusted / (forfeited), Options 0 0 0
Outstanding at end of year, Options 24,750 24,750 24,750
Exercisable at end of year, Options 24,750 24,750 24,750
Outstanding at beginning of year, Weighted average exercise price $ 52.09 $ 52.09 $ 52.58
Granted, Weighted average exercise price 0 0 0
Exercised, Weighted average exercise price 0 0 53.83
Adjusted / (forfeited), Weighted average exercise price 0 0 0
Outstanding at end of year, Weighted average exercise price 52.09 52.09 52.09
Exercisable at end of year, Weighted average exercise price $ 52.09 $ 52.09 $ 52.09