Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Expenses - Schedule of Product Warranty Liability (Details)

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Accounts Payable and Accrued Expenses - Schedule of Product Warranty Liability (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Payables and Accruals [Abstract]    
Accrued warranty reserve, beginning of period $ 742 $ 422
Accrual for product warranties issued 639 204
Product replacements and other warranty expenditures (565) (165)
Expiration of warranties 19 (124)
Accrued warranty reserve, end of period [1] $ 835 $ 337
[1] Includes non-current accrued warranty in other long-term liabilities at December 31, 2019 and September 30, 2020 of $110 and $135, respectively.