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 - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Accrued Liabilities, Rollforward [Roll Forward]      
Beginning Balance $ 195    
Additions for estimated future costs 71 $ 117  
Incurred costs (67) $ (144)  
Closing Balance 199    
Current portion 146    
Long-term portion 53    
Total $ 199   $ 226