Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities - Product Maintenance and Warranty (Details)

v3.21.2
Accrued Liabilities - Product Maintenance and Warranty (Details) - Warranty
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Accrued Liabilities, Rollforward [Roll Forward]    
Beginning Balance $ 199 $ 226
Additions for estimated future costs 68 185
Incurred costs (56) (200)
Closing Balance 211 211
Current portion 157 157
Long-term portion 54 54
Total $ 211 $ 211