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Fair Value Measurements Warrants (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Fair Value Disclosures [Abstract] |  |  |  |
Fair Value Adjustment Of Warrants, Income Statement | $ (1,520) | $ 2,195 | $ (1,113) | $ 201

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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References No definition available. + Details
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Balance Type: | debit
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- References No definition available. + Details
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