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Derivatives and Hedging Activities (Details Textual) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 EUR (€) | Sep. 22, 2020 EUR (€) | Dec. 31, 2019 USD ($) | Mar. 31, 2016 EUR (€) | Mar. 17, 2015
2022 EUR Senior notes |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.25% | 1.25% |  | 1.25% |  | 1.25%
Foreign Exchange Forward |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, lower remaining maturity range | 15 days |  |  |  |  |
Derivative, upper remaining maturity range | 20 months |  |  |  |  |
Currency Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, notional amount | € |  | € 163.2 |  |  |  |
Interest Payable | $ (0.6) |  |  |  |  |
Currency Swap | Hierarchial Level 2 |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative Liability | 18.1 |  |  |  |  |
Not Designated as a Hedging Instrument | Foreign Exchange Forward |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, notional amount | $ 388.1 |  |  | $ 398.5 |  |
2022 EUR Senior notes |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Designated amount, net investment hedge | € |  |  | € 336,300,000 |  | € 255,700,000 |

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