Composition of Certain Balance Sheet Items (Tables)

12 Months Ended

Dec. 31, 2023

Composition of Certain Balance Sheet Items [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid and other current assets consisted of the following (in thousands):

	December 31,
	2023		2022
Prepaid R&D expenses	$	10,998	$	5,325
Prepaid G&A expenses	803		1,597
Receivable from stock option exercises in-transit	—		62
Other	2,140		1,708
Prepaid and other current assets	$	13,941	$	8,692

Schedule of Property and Equipment

Depreciation and amortization periods for the Company’s property, plant and equipment are as follows: 

Asset	Estimated Useful Life
Machinery and equipment	4-7 years
Leasehold improvements	Shorter of expected useful life or lease term
Purchased computer software	4 years

Property and equipment, net consisted of the following (in thousands):

	December 31,
	2023		2022
Machinery and equipment	$	9,019	$	9,901
Leasehold improvements	—		1,498
Purchased computer software	2,232		1,500
	11,251		12,899
Less: accumulated depreciation and amortization	(7,415)		(11,168)
Property and equipment, net	$	3,836	$	1,731

Schedule of Other Current Liabilities

Other current liabilities consisted of the following (in thousands):

	December 31,
	2023		2022
Payroll and related expenses	$	13,245	$	11,060
Professional services	288		605
Other	2,129		503
Other current liabilities	$	15,662	$	12,168