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Schedule of Accrued Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Guarantees and Product Warranties [Abstract]    
Warranty accrual, beginning of the fiscal period $ 242 $ 158
Accrual adjustment for product warranty 80 199
Payments made (85) (115)
Warranty accrual, end of the fiscal period $ 237 $ 242