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Stock Compensation (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Capitalized stock compensation expense $ 174,000 $ 157,000
ESPP Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
ESPP, percentage of market price for eligible employees 85.00%  
Employees purchased common stock, shares 37,000 36,000
RSUs And PSUs [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Authorized awards from approved stock incentive plans 452,000  
Aggregate grant date market value $ 8,300,000  
RSAs, RSUs, And PSUs [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Authorized awards from approved stock incentive plans   381,000
Aggregate grant date market value   $ 9,500,000
Officers [Member] | Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grants of stock options 314,000 226,000