Quarterly report pursuant to Section 13 or 15(d)

Schedule of Fair Value Hierarchy Financial Assets (Details)

v3.22.1
Schedule of Fair Value Hierarchy Financial Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets $ 25,753 $ 28,495
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 6,299 5,484
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 19,454 23,011
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets
Money Market Funds [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 6,299 5,484
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 6,299 5,484
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets
Corporate Notes and Commercial Paper [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 19,454 23,011
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets 19,454 23,011
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Total financial assets