Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details)

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Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Deferred Revenue $ 278 $ 331
0-12 Months [Member]    
Deferred Revenue 129  
13-24 Months [Member]    
Deferred Revenue 123  
Over 24 Months [Member]    
Deferred Revenue $ 26