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Supplemental Balance Sheet Information | 6 Months Ended
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Jun. 30, 2020
Supplemental Balance Sheet Information [Abstract] |
Supplemental Balance Sheet Information | Supplemental Balance Sheet Information Prepaid expenses and other current assets
| June 30, 2020 |  | December 31, 2019
Prepaid clinical, contract research and manufacturing costs | $ | 2,203 |  |  | $ | 481 |
Interest receivable | 221 |  |  | 236 |
Prepaid insurance | 212 |  |  | 533 |
Other | 952 |  |  | 705 |
Prepaid expenses and other current assets | $ | 3,588 |  |  | $ | 1,955 |
Property and equipment, net
| June 30, 2020 |  | December 31, 2019
Scientific equipment | $ | 3,315 |  |  | $ | 2,795 |
Leasehold improvements | 192 |  |  | 192 |
Computers and software | 48 |  |  | 32 |
Furniture and fixtures | 41 |  |  | 41 |
Construction in process | 2,512 |  |  | 356 |
Property and equipment, gross | 6,108 |  |  | 3,416 |
Less: accumulated depreciation | (1,644) |  |  | (1,317) |
Property and equipment, net | $ | 4,464 |  |  | $ | 2,099 |
Depreciation and amortization expense was $187 and $87 for the three months ended June 30, 2020 and 2019, respectively, and $335 and $174 for the six months ended June 30, 2020 and 2019, respectively. Other noncurrent assets
| June 30, 2020 |  | December 31, 2019
Restricted cash | $ | 1,200 |  |  | $ | — |
Prepaid lease costs | 823 |  |  | — |
Prepaid services | 233 |  |  | — |
Operating lease asset | — |  |  | 356 |
Other | 10 |  |  | 32 |
Total other noncurrent assets | $ | 2,266 |  |  | $ | 388 |
Accrued expenses and other current liabilities
| June 30, 2020 |  | December 31, 2019
Accrued payroll-related expenses | $ | 706 |  |  | $ | 920 |
Accrued legal expenses | 362 |  |  | 254 |
Accrued clinical, contract research and manufacturing costs | 303 |  |  | 515 |
Common stock warrant liability | 257 |  |  | — |
Operating lease liability | 196 |  |  | 292 |
Accrued other expenses | 123 |  |  | 454 |
Accrued expenses and other current liabilities | $ | 1,947 |  |  | $ | 2,435 |
Other noncurrent liabilities
| June 30, 2020 |  | December 31, 2019
Operating lease liability | $ | — |  |  | $ | 59 |
Total other noncurrent liabilities | $ | — |  |  | $ | 59 |

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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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- Definition Supplemental Balance Sheet Information [Abstract] + References No definition available. + Details
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