Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Summary of Changes in our Product Warranty (Details)

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Accrued Expenses - Summary of Changes in our Product Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Beginning Balance $ 452 $ 41
Accrual (reversal) for warranty expense (94) (58)
Warranty costs incurred during period 22 469
Ending Balance $ 380 $ 452