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Derivative Instruments and Hedging Activities (Details) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 EUR (€) | Dec. 31, 2017 CAD ($) | Dec. 31, 2016 EUR (€)
Derivative [Line Items] |  |  |  |  |  |
Unrealized loss associated with interest rate swap agreements | $ 973,000 |  |  |  |  |
Net investment | 6 3/4% Notes | Designated Hedging Instruments |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivatives | € |  | € 224,424,000 |  | € 103,682,000 |  | € 29,649,000
Cumulative net investment hedge gains (losses) recorded in accumulated other comprehensive items, net | 14,258,000 |  |  |  |  |
Interest Rate Swap | Designated Hedging Instruments |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivatives | 350,000,000 |  |  |  |  |
Purchases | Foreign exchange contracts |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivatives | € |  | € 29,000,000 |  | 135,000,000 |  |
Purchases | Foreign Exchange Forward - Option Two |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivatives |  |  | $ 114,390,000 |  |  |
Purchases | Foreign Exchange Forward - Option One |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivatives |  |  | 138,823,000 |  |  |
Sales | Foreign exchange contracts |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Amount of hedged item | 33,374,000 |  | $ 160,757,000 |  |  |
Sales | Foreign Exchange Forward - Option Two |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Amount of hedged item | € |  |  |  | € 96,150,000 |  |
Sales | Foreign Exchange Forward - Option One |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Amount of hedged item |  |  |  |  | $ 176,000 |
Other Noncurrent Liabilities | Interest Rate Swap |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative liability | 973,000 |  |  |  |  |
Cumulative unrealized losses within accumulated other comprehensive items, net | $ 973,000 |  |  |  |  |

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