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Summary of Signficant Accounting Policies Noncontrolling Interest (Details) € in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2019 SEK (kr)
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Share Price of the Equity Method Investment | kr |  |  |  |  |  |  | kr 93
Reedemable NCI, Put Option | $ 24,000 |  | $ 24,000 |  |  | € 21,000 |
Redeemable NCI, Call Option | 26,000 |  | 26,000 |  |  | € 23,000 |
Redeemable noncontrolling interest | 24,077 |  | 24,077 | $ 0 |  |  |
Payments to Acquire Additional Interest in Subsidiaries |  | $ 19,000 |  |  |  |  |
Notes issued in connection with purchase of noncontrolling interest |  |  | 14,196 | $ 0 | $ 0 |  |
Adjustments to Additional Paid in Capital, Other |  |  | 49,520 |  |  |  |
Europe [Member] |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Notes issued in connection with purchase of noncontrolling interest |  | 14,000 |  |  |  |  |
Noncontrolling Interest [Member] |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Dividends Payable | 7,000 |  | 7,000 |  |  |  |
Adjustments to Additional Paid in Capital, Other | (12,000) | (10,000) | 22,415 |  |  |  |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Other | (18,000) | $ (9,000) | 27,105 |  |  |  |
Long Term [Member] | Noncontrolling Interest [Member] |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Dividends Payable | 5,000 |  | 5,000 |  |  |  |
Short Term [Member] | Noncontrolling Interest [Member] |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |
Dividends Payable | $ 2,000 |  | $ 2,000 |  |  |  |

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