Annual report pursuant to Section 13 and 15(d)

Stock Plans and Management Compensation (Details 2)

v3.22.0.1
Stock Plans and Management Compensation (Details 2) - Stock Options and SAR's [Member] - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2019
Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 23.41 $ 23.79 $ 21.57 $ 16.04
Age of Grantee 62 years