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Income Taxes Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 30, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | 21.00% | 35.00% |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | $ 5,780 | $ 13,634 |  |
Tax Cuts and Jobs Act - Transition tax amount |  | 3,497 |  | $ 3,877
Tax Cuts and Jobs Act - Foreign Tax credit |  | 577 |  |
Tax Cuts and Jobs Act - Adjustment |  | 375 |  |
Tax Cuts and Jobs Act - Net Tax Benefit | $ 5,977 | $ 18,083 |  |

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