Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The premium (cost) of a hedge, net of any cash received on settlement during the period.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Cumulative adjustment resulting from gains and losses on foreign currency derivatives that are designated as, and are effective as, hedges of a net investment in a foreign entity, commencing as of the designation date. Adjustment reported in equity as part of accumulated other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b),(c)
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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Derivative Instruments and Hedging Activities (Details) € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2014 EUR (€)	Dec. 31, 2013 EUR (€)
6 3/4% Notes
Derivative instruments
Stated interest rate (as a percent)	6.75%	6.75%		6.75%	6.75%	6.75%
Net investment \| 6 3/4% Notes \| Designated Hedging Instruments
Derivative instruments
Notional amount of derivatives \| €				€ 34,331	€ 47,730	€ 106,525
Cumulative net investment hedge gains (losses) recorded in accumulated other comprehensive items, net	$ 17,096
Foreign exchange contracts
Derivative instruments
Net cash payments from foreign currency forward contracts	$ 22,705	$ 21,125	$ (6,954)
Purchases \| Forward contracts \| Euros : U.S. dollars
Derivative instruments
Notional amount of derivatives \| €					€ 206,000
Sales \| Forward contracts \| Euros : U.S. dollars
Derivative instruments
Notional amount of derivatives		$ 252,745
6 3/4% Notes
Derivative instruments
Stated interest rate (as a percent)	6.75%			6.75%