XML 121 R104.htm IDEA: XBRL DOCUMENT v3.22.0.1
Stock-Based Compensation Plans - Summary of Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Stock Options Outstanding, Beginning balance 465,423    
Stock Options Outstanding, Granted 178,441 187,088 164,244
Stock Options Outstanding, Exercised (2,699)    
Stock Options Outstanding, Expired (5,301)    
Stock Options Outstanding, Ending balance 635,864 465,423  
Stock Options Outstanding, Exercisable 282,081    
Weighted-Average Exercise Price, Outstanding, Beginning balance $ 174.11    
Weighted-Average Exercise Price, Granted 132.47    
Weighted-Average Exercise Price, Exercised 113.06    
Weighted-Average Exercise Price, Expired 169.24    
Weighted-Average Exercise Price, Outstanding, Ending balance 162.73 $ 174.11  
Weighted-Average Exercise Price, Exercisable $ 177.02    
Weighted-Average Life (In Years), Outstanding, Ending balance 7 years 9 months 18 days    
Weighted-Average Life (In Years), Exercisable 6 years 10 months 24 days    
Aggregate Intrinsic Value, Outstanding, Ending balance $ 3,762