Other Balance Sheet Accounts (Tables)

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets are composed of the following (in thousands):

	March 31,		December 31,
	2024		2023
Materials and supplies	$	16,249	$	12,476
Prepaid expenses		5,137		5,696
Other current assets		3,636		4,909
Total prepaid expenses and other current assets	$	25,022	$	23,081

Summary of accrued expenses

Accrued expenses are composed of the following (in thousands):

	March 31,		December 31,
	2024		2023
Accrued salaries and other payroll liabilities	$	5,026	$	15,950
Accrued professional services		1,310		605
Accrued equipment and services liabilities for research and development		1,014		112
Accrued expenses—other		3,191		1,709
Total accrued expenses	$	10,541	$	18,376