Balance Sheets Details (Tables)

3 Months Ended

Mar. 31, 2022

Balance Sheets Details [Abstract]

Schedule of cash and cash equivalents

Cash equivalents as of March 31, 2022 and December 31, 2021, consisted of the following (in thousands):

	March 31, 2022				December 31, 2021
	Adjusted Cost		Estimated Fair Value		Adjusted Cost		Estimated Fair Value
Money market funds (1)	$	72,107	$	72,107	$	86,095	$	86,095

(1) Money market funds are classified in cash and cash equivalents on our unaudited condensed consolidated balance sheets. Average contractual maturities (in days) is not applicable.

Schedule of inventory components

Inventories consisted of the following (in thousands):

	March 31, 2022		December 31, 2021
Raw materials	$	49	$	49
Work-in-process	160		65
Finished goods	1,351		1,046
Inventories	$	1,560	$	1,160

Schedule of property and equipment, net

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

	March 31, 2022		December 31, 2021
Laboratory equipment	$	36,435	$	33,101
Leasehold improvements	16,506		16,117
Computer equipment and software	3,565		3,481
Office equipment and furniture	1,297		1,297
Construction in progress	2,450		3,231
Property and equipment	60,253		57,227
Less: accumulated depreciation and amortization	(36,779)		(35,882)
Property and equipment, net	$	23,474	$	21,345

Depreciation expense included in both research and development expenses and selling, general and administrative expenses in the unaudited condensed consolidated statements of operations was as follows (in thousands):

	Three Months Ended March 31,
	2022		2021
Depreciation expense	$	1,215	$	659

Schedule of other accrued liabilities

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

	March 31, 2022		December 31, 2021
Accrued purchases	$	7,695	$	6,755
Accrued professional and outside service fees	6,121		5,147
Other	356		676
Total	$	14,172	$	12,578