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Income Taxes - Narrative (Details) - U.S. Federal, State and Local tax authorities - USD ($) $ in Millions | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Operating loss carry-forward |  | $ 100.5
Operating loss carry-forward available | $ 46.0 | $ 46.0

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