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Income Taxes - Tax Cuts and Jobs Act of 2017 (Details) - USD ($) |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 22, 2017 | Dec. 21, 2017 | Dec. 31, 2018 | Jun. 30, 2019
Federal statutory income tax rate | 21.00% | 35.00% |  |
Income tax related to remeasurement of deferred tax assets due to change in tax law |  |  | $ 0 |
Reduction in deferred tax assets as remeasured under Tax Cuts and Jobs Act of 2017 |  |  | 26,600,000 |
Reduction in valuation allowance resulting from remeasurement of deferred tax assets under Tax Cuts and Jobs Act of 2017 |  |  | $ 26,600,000 |
Forecast |  |  |  |
GILTI income |  |  |  | $ 0
GILTI deductions |  |  |  | $ 0

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- Definition Increase (decrease) in the amount of deferred tax assets, before allocation of valuation allowances, as remeasured pursuant to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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- Definition The amount of global intangible low-taxed income (GILTI) of foreign subsidiaries taxable under provisions of the Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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- Definition The amount of deductions related to global intangible low-taxed income (GILTI) of foreign subsidiaries taxable under provisions of the Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the valuation allowance for deferred tax assets pursuant to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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