XML 174 R105.htm IDEA: XBRL DOCUMENT v3.22.0.1
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Option Activity (Details) - $ / shares
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding, beginning of year (in shares) 57,111 75,897
Granted (in shares) 0 0
Exercised (in shares) (22,429) (17,222)
Forfeited (in shares) (3,156) (1,564)
Expired (in shares) (7,308) 0
Outstanding, end of year (in shares) 24,218 57,111
Options exercisable at year-end (in shares) 24,218 57,111
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Outstanding, beginning of year (in dollars per share) $ 18.92 $ 18.69
Exercised (in dollars per share) 18.96 18.25
Forfeited (in dollars per share) 19.20 15.06
Expired (in dollars per share) 15.06  
Outstanding, end of year (in dollars per share) 20.01 18.92
Options exercisable at year-end (in dollars per share) 20.01 18.92
Weighted-average fair value of options forfeited (in dollars per share) $ 4.59 $ 4.26