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Other Financial Information - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Property, Plant and Equipment [Line Items] |  |  |  |  |
Depreciation and amortization | $ 200 | $ 200 | $ 300 | $ 400 |
Property and equipment, gross | 4,018 |  | 4,018 |  | $ 3,775
Assets under capital lease |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property and equipment, gross | $ 1,100 |  | $ 1,100 |  | $ 800

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