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Fair Value Measurements Warrants (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Fair Value Disclosures [Abstract] |  |  |  |
Fair Value Adjustment Of Warrants, Income Statement | $ 11 | $ (1,520) | $ (327) | $ (1,113)

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- References No definition available. + Details
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