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Balance Sheet Details | 3 Months Ended
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Mar. 31, 2022
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Details | Balance Sheet Details Cash, Cash Equivalents and 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 |
Short-term restricted cash of approximately $16 thousand is included in prepaid expenses and other current assets and $1.0 million of non-current restricted cash is included in other non-current assets in the condensed consolidated balance sheet as of March 31, 2022 and December 31, 2021. Inventories, net 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 |
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 |
The majority of the amounts included in construction-in-progress are related to the NIH Contract (see Note 4). 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 severance and retention bonuses of approximately $0.6 million and $0.1 million are included in non-current other liabilities on our condensed consolidated balance sheet as of March 31, 2022 and December 31, 2021, respectively. Warranties 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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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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