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Accrued and Other Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2019
Payables and Accruals [Abstract] |
Summary of accrued and other current liabilities | Accrued and other current liabilities as of December 31, 2019 and 2018 were as follows (in thousands):
|  | As of December 31, |
|  | 2019 |  |  | 2018 |
Accrued expenses |  | $ | 2,049 |  |  | $ | 2,853 |
Warranty liabilities |  |  | 267 |  |  |  | 145 |
Contract liabilities |  |  | 225 |  |  |  | — |
Payroll payable |  |  | 473 |  |  |  | 818 |
Accrued bonuses |  |  | 350 |  |  |  | — |
Short-term lease liabilities and other |  |  | 162 |  |  |  | 83 |
Total accrued and other current liabilities |  | $ | 3,526 |  |  | $ | 3,899 |
Summary of other long-term liabilities | Other long-term liabilities as of December 31, 2019 and 2018 were as follows (in thousands):
|  | As of December 31, |
|  | 2019 |  |  | 2018 |
Deferred rent |  |  | 1,106 |  |  |  | 1,193 |
Long-term lease liabilities |  |  | 295 |  |  |  | 111 |
Total accrued and other long-term liabilities |  | $ | 1,401 |  |  | $ | 1,304 |

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