Property and Equipment (Details Narrative) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Depreciation expense | $ 22 | $ 14 | $ 45 | $ 29 |
| Amortization of finance lease | ||||
| Finance Lease Right-of-Use Lab Equipment Obtained in Exchange For Finance Lease Liabilities [Member] | ||||
| Amortization of finance lease | $ 18 | $ 35 | ||
| Minimum [Member] | ||||
| Estimated useful lives of assets | 3 years | |||
| Maximum [Member] | ||||
| Estimated useful lives of assets | 5 years | |||