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

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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The number of derivative instruments of a particular group held by the entity.

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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details) € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) contracts	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Apr. 05, 2016 EUR (€) contracts	Nov. 10, 2015 EUR (€) contracts	Nov. 14, 2014 EUR (€) contracts
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Accumulated other comprehensive loss	$ (243,988)	$ (242,409)
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion	(3,031)	(839)	$ (581)
Change in fair value of derivatives	(10,213)	4,848	2,311
Currency Swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		4,848	$ 2,311
Currency Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (10,213)
Forward Contracts [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held \| contracts	0
Interest rate swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held \| contracts					3	2
Accumulated other comprehensive loss	$ (4,451)	$ (1,420)
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion	(5,447)
Interest Expense [Member] \| Interest rate swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	2,416
2018 Euro Term Loan [Member] \| Interest rate swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held \| contracts				4
2018 Euro Term Loan [Member] \| Interest Rate Swap, Apr 5, 2016, 250,800,000 EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount \| €				€ 250,800
Derivative, Fair Value, Net	(284)
2018 Euro Term Loan [Member] \| Interest Rate Swap, Nov 14, 2014, 250,800,000 EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount \| €						€ 250,800
Derivative, Fair Value, Net	(477)
2019 Euro Term Loan [Member] \| Interest Rate Swap, Nov 10, 2015, 235,335,000 EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount \| €					€ 235,335
Derivative, Fair Value, Net	(1,658)
2021 Euro Term Loan [Member] \| Interest rate swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held \| contracts				5
2021 Euro Term Loan [Member] \| Interest Rate Swap, Apr 5, 2016, 468,800,000 EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount \| €				€ 468,800
Derivative, Fair Value, Net	$ (1,711)