Quarterly report pursuant to Section 13 or 15(d)

Accrued Warranty Reserve (Details)

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Accrued Warranty Reserve (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2021
Sep. 30, 2021
Accrued Warranty Reserve    
Maximum period of product warranties   24 months
Balance, beginning of the period   $ 5,850
Standard warranty provision   143
Accrual related to reliability repair programs $ 4,900 400
Deductions for warranty claims   (4,129)
Balance, end of the period $ 5,850 $ 1,864