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Stock Plans and Stock Based Compensation - Narrative (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 67,846 86,411 62,360
Stock-based compensation expense | $ $ 5,145 $ 4,733 $ 4,235
Average grant date fair value (in dollars per share) | $ / shares $ 83.97    
SARs, shares of restricted stock and restricted units and performance share awards | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized number of awards (in shares) 1,275,000    
Restricted stock awards and restricted units and performance share awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense | $ $ 5,400 4,700 4,000
Restricted stock awards and restricted units and performance share awards | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Reduction to shares available for grant (ratio) 4.25    
Full-value share awards | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized number of awards (in shares) 300,000    
Stock options and SARs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 0    
Stock-based compensation expense | $ $ 151 $ 194 $ 235
Unrecognized compensation cost stock option awards | $ $ 40    
Weighted average period for recognition 9 months 18 days    
Awards granted during period (in shares) 0 0 0
Stock options and SARs | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award term (no more than) 10 years    
Stock options and SARs | 2019 Equity Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Stock options and SARs | 2019 Equity Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 7 years    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan | Year One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 0.00%    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan | Year Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan | Year Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan | Year Four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Stock Options And Stock Appreciation Rights With Expiration Date In 2026 | 2019 Equity Plan | Year Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 7 years    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 0.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Six      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Stock Options And Stock Appreciation Rights, Not Expiring In 2026 | 2019 Equity Plan | Year Seven      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 15.00%    
Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 54,151 69,451 49,365
Average grant date fair value (in dollars per share) | $ / shares   $ 63.44 $ 89.21
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan | Year One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 0.00%    
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan | Year Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan | Year Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan | Year Four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Restricted Stock Granted In 2016 To 2021 | 2019 Equity Plan | Year Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 25.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 7 years    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 0.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Six      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 17.00%    
Restricted Stock Awards Not Granted In 2016 To 2021 | 2019 Equity Plan | Year Seven      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting, percentage 15.00%    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 8,355 10,415 8,345
Weighted average period for recognition 4 years 1 month 6 days    
Unrecognized compensation cost for non-option awards | $ $ 1,400    
Performance shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted (in shares) 5,340 6,545 4,650
Performance shares | 2019 Equity Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award performance period 3 years    
Restricted Stock And Performance Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average period for recognition 3 years 6 months    
Unrecognized compensation cost for non-option awards | $ $ 11,500