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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
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Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

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-Paragraph 4C
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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