Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

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Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments.

+ References

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

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Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Net fair value of all derivatives designated as hedges of net investment in foreign operations.

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Aggregate notional amount of all derivatives designated as cash flow hedging instruments. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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-Glossary Notional Amount

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- Definition

Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

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Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

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Derivative Instruments and Hedging Activities (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Mar. 31, 2006
Derivative Instruments and Hedging Activities (Textuals)
Fair value of investment hedge contracts	$ 2,628		$ 2,628		$ 0
Gain (loss) on investment hedge derivative	3,700	4,295	3,987	2,269
Maximum maturities of Foreign exchange forward contracts			24 months
Fair value of non-designated foreign exchange forward contracts	490		490		47
Fair value of interest rate contracts	(2,715)		(2,715)		(3,558)
Notional amount related to senior notes issuance						200,000
Anticipated reclassification from other comprehensive income to interest expense within the next 12 months	924		924
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities (Textuals)
Notional amount of pay-fixed receive-variable interest rate swap	$ 50,000		$ 50,000