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Balance Sheet Details (Tables)

3 Months Ended

Mar. 31, 2022

Balance Sheet Related Disclosures [Abstract]

Summary of Cash and Cash Equivalents

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

						March 31, 2022						December 31, 2021
Cash and cash equivalents						$	29,983					$	28,451
Restricted cash						1,016						1,016
Total cash, cash equivalents and restricted cash						$	30,999					$	29,467

Schedule of Restricted Cash

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

						March 31, 2022						December 31, 2021
Cash and cash equivalents						$	29,983					$	28,451
Restricted cash						1,016						1,016
Total cash, cash equivalents and restricted cash						$	30,999					$	29,467

Schedule of Inventories

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

						March 31, 2022						December 31, 2021
Raw materials						$	12,592					$	9,345
Work-in-process						994						867
Finished goods						9,659						10,613
Total inventories, net						$	23,245					$	20,825

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following as of March 31, 2022 and December 31, 2021 (in thousands):

						March 31, 2022						December 31, 2021
Computer equipment and software						$	5,777					$	5,759
Laboratory and manufacturing equipment						33,884						30,260
Leasehold improvements						12,460						12,095
Office furniture and fixtures						2,065						2,074
Property and equipment, gross						54,186						50,188
Less accumulated depreciation and amortization						(28,151)						(26,703)
Construction-in-progress						1,664						4,549
Property and equipment, net						$	27,699					$	28,034

Schedule of Accrued Compensation and Related Benefits

Accrued compensation and related benefits, which is included in current liabilities on the condensed consolidated balance sheet consisted of the following as of March 31, 2022 and December 31, 2021 (in thousands):

						March 31, 2022						December 31, 2021
Accrued incentive compensation						$	1,779					$	14
Accrued vacation						3,737						3,388
Accrued payroll taxes and other						1,547						1,492
Accrued severance and retention bonuses						901						26
Accrued compensation and related benefits						$	7,964					$	4,920

Long-term accrued s

Schedule of Activity of Warranty Accrual

Accrued warranty is included in other current liabilities on our condensed consolidated balance sheet. Activity for our warranty accrual for the three months ended March 31, 2022 and 2021 is summarized below (in thousands):

						Three Months Ended March 31,
						2022						2021
Beginning balance						$	1,170					$	1,663
Accrual (release) for current period warranties						306						(150)
Warranty costs incurred						(264)						(236)
Ending balance						$	1,212					$	1,277

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