Accrued Expenses

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses

Accrued expenses were as follows:

	March 31, 2024		December 31, 2023
Accrued payroll	$	7,273	$	4,553
Warranty reserve (1)	5,513		6,197
Accrued legal and professional expenses	11,058		10,710
Provision for contract losses	3,205		3,351
Insurance premium payable, current	2,730		2,605
Interest payable, current	3,684		—
Other	5,151		4,916
Total accrued expenses	$	38,614	$	32,332

(1) Refer to the table below for the warranty reserve activity for the three months ended March 31, 2024 and 2023.

The following table summarizes warranty reserve activity:

	Three Months Ended March 31,
	2024		2023
Warranty reserve - beginning of period	$	6,197	$	3,836
Additions for current period deliveries	265		357
Changes in the warranty reserve estimate	(949)		—
Warranty costs incurred	—		(221)
Warranty reserve - end of period	$	5,513	$	3,972