Annual report pursuant to Section 13 and 15(d)

Stock Compensation (Narrative) (Details)

v3.22.0.1
Stock Compensation (Narrative) (Details)
$ in Thousands
1 Months Ended 2 Months Ended 12 Months Ended
Apr. 05, 2021
USD ($)
Mar. 01, 2021
USD ($)
Apr. 30, 2021
USD ($)
shares
Mar. 31, 2020
Apr. 30, 2019
USD ($)
shares
Feb. 22, 2022
shares
Dec. 31, 2021
USD ($)
item
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Proceeds from the exercise of stock options | $             $ 5,012 $ 258 $ 969  
Cash paid for taxes in lieu of shares upon vesting of RSU's | $             $ 3,940 4,216 $ 6,350  
Stock Options and Restricted Stock Units [Member] | President and CEO [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Compensation expense | $               $ 1,700    
Stock Options [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Expiration period             10 years      
Options granted             38,000 18,000 34,000  
Options exercised             55,546 4,136 15,585  
Options forfeited             4,000  
Options outstanding             159,570 171,694 157,830 143,415
Unamortized compensation expense | $             $ 900      
Weighted average recognized period of unamortized compensation expenses (in years)             3 years      
Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period             5 years      
Unamortized compensation expense | $             $ 12,600      
Weighted average recognized period of unamortized compensation expenses (in years)             3 years 3 months 18 days      
Stock units granted             76,266 46,036 6,400  
Stock units vested             61,243 73,256 95,500  
Stock units forfeited             17,940 2,120 3,342  
Restricted Stock Units (RSUs) [Member] | President and CEO [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock units granted     41,186              
Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period 5 years                  
Restricted Stock Units (RSUs) [Member] | Chief Accounting Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock units granted             3,053      
Restricted Stock Units (RSUs) [Member] | Chief Financial Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock units granted             10,955      
Stock units forfeited             14,070      
Restricted Stock Units (RSUs) [Member] | Divisional Vice Presidents [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock units granted             16,970      
Restricted Stock Units (RSUs) Prior to 2016 [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period             6 years      
Restricted Stock Units (RSUs) Prior to 2016 [Member] | Year Two [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) Prior to 2016 [Member] | Year Three [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) Prior to 2016 [Member] | Year Four [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) Prior to 2016 [Member] | Year Five [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) Prior to 2016 [Member] | Year Six [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) During 2016 [Member] | Year One [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) During 2016 [Member] | Year Two [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) During 2016 [Member] | Year Three [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) During 2016 [Member] | Year Four [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) During 2016 [Member] | Year Five [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             20.00%      
Restricted Stock Units (RSUs) Subsequent to 2016 [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period             3 years      
Restricted Stock Units (RSUs) Subsequent to 2016 [Member] | Year One [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             0.33%      
Restricted Stock Units (RSUs) Subsequent to 2016 [Member] | Year Two [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             0.33%      
Restricted Stock Units (RSUs) Subsequent to 2016 [Member] | Year Three [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting percentage             0.33%      
Sign-On Award [Member] | Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Grant date fair value | $ $ 3,700                  
Retention Award [Member] | Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Grant date fair value | $ $ 2,900                  
Incentive Program [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Grant date fair value | $   $ 3,600                
Number of annual vesting installments | item             5      
Retirement Plan for Non-Employee Directors [Member] | Restricted Stock Units (RSUs) [Member] | Director [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Compensation expense | $             $ 1,100 $ 800 $ 1,500  
Issuance of common stock in connection with stock-based compensation, shares     10,000   8,000   1,000      
Aggregate fair value of the shares issued | $     $ 1,600   $ 1,200          
Subsequent Event [Member] | Incentive Program [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock units granted           25,140        
Minimum [Member] | Incentive Program [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Possible target award adjustment based on strategic and operational accomplishments       75.00%            
Maximum [Member] | Incentive Program [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Possible target award adjustment based on strategic and operational accomplishments       125.00%            
Maximum [Member] | Retirement Plan for Non-Employee Directors [Member] | Restricted Stock Units (RSUs) [Member] | Director [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Issuance of common stock in connection with stock-based compensation, shares             10,000      
Special Cash Dividend [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Compensation expense | $             $ 100