Quarterly report pursuant to Section 13 or 15(d)

SIGNIFICANT ACCOUNTING POLICIES - Accrued warranties and related costs (Details)

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SIGNIFICANT ACCOUNTING POLICIES - Accrued warranties and related costs (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Changes in the Company's accrued warranties and related costs        
Beginning accrued warranty expense $ 1,233 $ 1,140 $ 1,256 $ 1,133
Current period claims 29 (85) (87) (141)
Provision for current period sales 165 89 258 152
Ending accrued warranty expense $ 1,427 $ 1,144 $ 1,427 $ 1,144