Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following (in thousands): | | | | | | | | | | June 30, 2018 | | December 31, 2017 | Accrued salaries and benefits | $ | 550 |
| | $ | 560 |
| Accrued severance and other charges (1) | — |
| | 28 |
| Accrued warranty (2) | 66 |
| | 125 |
| Warrant liability (3) | 135 |
| | 669 |
| Other | 135 |
| | 157 |
| | $ | 886 |
| | $ | 1,539 |
|
| | (1) | For additional information, refer to Note 7, “Severance and Other Charges”. |
| | (2) | For additional information, refer to Note 8, “Accrued Warranty”. |
| | (3) | For additional information, refer to Note 9, “Warrants” and Note 10, “Fair Value Measurements”. |
|