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Supplemental Balance Sheet Information | 3 Months Ended
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Mar. 31, 2018
Supplemental Balance Sheet Information [Abstract] |
Supplemental Balance Sheet Information | Supplemental Balance Sheet Information Property and equipment, net
| March 31, 2018 |  | December 31, 2017
Scientific equipment | $ | 1,906 |  |  | $ | 1,797 |
Leasehold improvements | 192 |  |  | 192 |
Furniture and fixtures | 31 |  |  | 31 |
Computers and software | 26 |  |  | 26 |
Construction in process | 38 |  |  | 120 |
Property and equipment, gross | 2,193 |  |  | 2,166 |
Less: accumulated depreciation | (918 | ) |  | (849 | )
Property and equipment, net | $ | 1,275 |  |  | $ | 1,317 |
Depreciation and amortization expense was $86 and $38 for the three months ended March 31, 2018 and 2017, respectively. Accrued expenses and other current liabilities
| March 31, 2018 |  | December 31, 2017
Accrued legal expenses | 514 |  |  | 251 |
Accrued payroll-related expenses | 329 |  |  | 718 |
Other accrued expenses | 422 |  |  | 304 |
Accrued expenses and other current liabilities | $ | 1,265 |  |  | $ | 1,273 |

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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://www.xbrl.org/2003/role/presentationRef -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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