Annual report pursuant to Section 13 and 15(d)

Stockholders Equity (Equity Incentive Plans) (Narrative) (Details)

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Stockholders Equity (Equity Incentive Plans) (Narrative) (Details) - shares
1 Months Ended 12 Months Ended
Jun. 17, 2021
Jun. 30, 2021
Jun. 30, 2018
Dec. 31, 2021
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized 150,000,000        
Additional shares authorized 25,000,000        
Predetermined offering period, lower fair market value percentage       85.00%  
Number of shares purchased under ESPP       255,177  
Shares available for future sale       744,823  
Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized   8,000,000 5,000,000   2,000,000
Expiration period         10 years
Additional shares authorized   3,000,000 3,000,000    
Shares available for grant       2,823,838