Quarterly report pursuant to Section 13 or 15(d)

Schedule of Deferred Revenue (Details)

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Schedule of Deferred Revenue (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Contract with Customer, Liability $ 3,104 $ 2,939
0-12 Months [Member]    
Contract with Customer, Liability 2,246 2,034
13-24 Months [Member]    
Contract with Customer, Liability 598 530
Over 24 Months [Member]    
Contract with Customer, Liability $ 260 $ 375