XML 71 R59.htm IDEA: XBRL DOCUMENT v3.22.4
Stock Award Plans, Director Plan Outstanding and Exercisable Options (Details) - Director Plan [Member] - Stock Options [Member]
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
$ / shares
shares
First Price Range [Member]  
Outstanding and Exercisable Stock options [Abstract]  
Range of Exercise Prices, lower limit (in dollars per share) $ 70.65
Range of Exercise Prices, upper limit (in dollars per share) $ 85.30
Options Outstanding [Abstract]  
Number Outstanding (in shares) | shares 24,000
Weighted Average Remaining Contractual Life 1 year 1 month 6 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share) $ 99.52
Options Exercisable [Abstract]  
Number Exercisable (in shares) | shares 24,000
Weighted Average Exercise Price, Options Exercisable (in dollars per share) $ 99.52
Second Price Range [Member]  
Outstanding and Exercisable Stock options [Abstract]  
Range of Exercise Prices, lower limit (in dollars per share) $ 99.52
Options Outstanding [Abstract]  
Number Outstanding (in shares) | shares 32,480
Weighted Average Remaining Contractual Life 1 year 7 months 6 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share) $ 76.34
Options Exercisable [Abstract]  
Number Exercisable (in shares) | shares 32,480
Weighted Average Exercise Price, Options Exercisable (in dollars per share) $ 76.34
Third Price Range [Member]  
Outstanding and Exercisable Stock options [Abstract]  
Range of Exercise Prices, lower limit (in dollars per share) 70.65
Range of Exercise Prices, upper limit (in dollars per share) $ 99.52
Options Outstanding [Abstract]  
Number Outstanding (in shares) | shares 56,480
Weighted Average Remaining Contractual Life 1 year 4 months 24 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share) $ 86.19
Options Exercisable [Abstract]  
Number Exercisable (in shares) | shares 56,480
Weighted Average Exercise Price, Options Exercisable (in dollars per share) $ 86.19
Full Exercise Price Range [Member]  
Options Outstanding [Abstract]  
Aggregate Intrinsic Value, Options Outstanding | $ $ 0
Options Exercisable [Abstract]  
Aggregate Intrinsic Value, Options Exercisable | $ $ 0