Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Fair Value of Financial Instruments (Details)

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Summary of Significant Accounting Policies - Schedule of Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Fair value of marketable debt securities $ 3,531 $ 1,639
Level 1 [Member]    
Fair value of marketable debt securities
Level 2 [Member]    
Fair value of marketable debt securities 3,531 1,639
Level 3 [Member]    
Fair value of marketable debt securities
U.S. Government Obligations [Member]    
Fair value of marketable debt securities 1,009 1,014
U.S. Government Obligations [Member] | Level 1 [Member]    
Fair value of marketable debt securities
U.S. Government Obligations [Member] | Level 2 [Member]    
Fair value of marketable debt securities 1,009 1,014
U.S. Government Obligations [Member] | Level 3 [Member]    
Fair value of marketable debt securities
Corporate Obligations [Member]    
Fair value of marketable debt securities 2,522 625
Corporate Obligations [Member] | Level 1 [Member]    
Fair value of marketable debt securities
Corporate Obligations [Member] | Level 2 [Member]    
Fair value of marketable debt securities 2,522 625
Corporate Obligations [Member] | Level 3 [Member]    
Fair value of marketable debt securities