Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities - Product Maintenance and Warranty (Details)

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Accrued Liabilities - Product Maintenance and Warranty (Details) - Warranty
$ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
Accrued Liabilities, Rollforward [Roll Forward]  
Beginning Balance $ 270
Additions for estimated future costs 76
Incurred costs (60)
Balance at the end 286
Current portion 226
Long-term portion 60
Total $ 286