Quarterly report pursuant to Section 13 or 15(d)

Schedule of Fair Value of Financial Instruments (Details)

v3.22.1
Schedule of Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities $ 3,543 $ 8,855
Marketable equity securities 76
U.S. Government Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 746 667
Corporate Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 2,797 8,112
Marketable equity securities   76
Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 76
Marketable equity securities   76
Fair Value, Inputs, Level 1 [Member] | U.S. Government Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities
Fair Value, Inputs, Level 1 [Member] | Corporate Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities
Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 3,543 8,779
Marketable equity securities  
Fair Value, Inputs, Level 2 [Member] | U.S. Government Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 746 667
Fair Value, Inputs, Level 2 [Member] | Corporate Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities 2,797 8,112
Fair Value, Inputs, Level 3 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities
Marketable equity securities  
Fair Value, Inputs, Level 3 [Member] | U.S. Government Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities
Fair Value, Inputs, Level 3 [Member] | Corporate Obligations [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of marketable debt securities