Accrued Expenses

3 Months Ended

Mar. 31, 2023

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses

Accrued expenses were as follows:

	March 31, 2023		December 31, 2022
Accrued payroll	$	4,636	$	2,706
Warranty reserve (1)	3,972		3,836
Accrued legal and professional expenses	2,087		840
Provision for contract losses	1,936		2,561
Insurance premium payable, current	2,730		2,607
Other	4,990		2,809
Total accrued expenses	$	20,351	$	15,359

(1) Refer to the table below for the warranty reserve activity for the three months ended March 31, 2023.

The following table summarizes warranty reserve activity:

	Three Months Ended March 31,
	2023		2022
Warranty reserve - beginning of period	$	3,836	$	2,112
Additions for current period deliveries	357		673
Changes in the warranty reserve estimate	—		955
Warranty costs incurred	(221)		(500)
Warranty reserve - end of period	$	3,972	$	3,240