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Accrued Expenses and Other Current Liabilities
 12 Months Ended
Dec. 31, 2023
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following as of December 31, 2023 and 2022 (in thousands):
December 31,
20232022
Accrued payroll$878 $1,300 
Accrued expenses and taxes2,798 375 
Deferred revenue367 525 
Warranty reserve23 65 
Total accrued expenses and other current liabilities$4,066 $2,265 
As of December 31, 2023, accrued expenses and taxes includes a $2.2 million accrual related to contractual liabilities arising from the series production award cancellation.