Balance Sheets Details (Tables)

3 Months Ended

Mar. 31, 2021

Balance Sheets Details [Abstract]

Schedule of cash and cash equivalents

Cash equivalents as of March 31, 2021 and December 31, 2020, consisted of the following (in thousands):

	March 31, 2021				December 31, 2020
	Adjusted Cost		Estimated Fair Value		Adjusted Cost		Estimated Fair Value
Money market funds (1)	$	122,075	$	122,075	$	127,567	$	127,567

(1) Money market funds are classified in cash and cash equivalents on our consolidated balance sheets. Average Contractual Maturities (in days) is not applicable.

Schedule of inventory components

Inventories consisted of the following (in thousands):

	March 31, 2021		December 31, 2020
Raw materials	$	77	$	77
Work-in-process	107		82
Finished goods	845		805
Inventories	$	1,029	$	964

Schedule of property and equipment, net

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

	March 31, 2021		December 31, 2020
Laboratory equipment	$	27,491	$	25,468
Leasehold improvements	10,785		10,785
Computer equipment and software	3,236		3,192
Office equipment and furniture	1,246		1,246
Construction in progress	1,375		2,357
Property and equipment	44,133		43,048
Less: accumulated depreciation and amortization	(33,737)		(33,373)
Property and equipment, net	$	10,396	$	9,675

Depreciation expense included in the Unaudited Condensed Consolidated Statements of Operations was follows (in thousands):

	Three months ended March 31,
	2021		2020
Depreciation Expense	$	659	$	438

Schedule of other accrued liabilities

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

	March 31, 2021		December 31, 2020
Accrued purchases	$	5,749	$	7,170
Accrued professional and outside service fees	3,527		2,589
Other	240		513
Total	$	9,516	$	10,272