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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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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.

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The effective portion of gains 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 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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Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

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

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Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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DERIVATIVES AND HEDGING ACTIVITIES: (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Designated as Hedging Instrument [Member]
Notional Disclosures [Abstract]
Currency forward contracts	$ 93,420		$ 93,420		$ 98,744
Balance of designated derivative contracts as cash flow hedges and their impact on OCI
Balance at the beginning of the period			(1,091)
Amount of gain recognized in OCI (effective portion)			1,510
Amount of gain reclassified from OCI to income (effective portion)			(161)
Balance at the end of the period	258		258
Not Designated as Hedging Instrument [Member]
Notional Disclosures [Abstract]
Currency forward contracts	26,019		$ 26,019
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Expected time to realize the accumulated OCI balance related to foreign exchange contracts			12 months
Foreign Exchange Forward [Member] \| Other Current Assets [Member]
Derivative, Fair Value, Net [Abstract]
Currency forward contracts, assets	630		$ 630
Foreign Exchange Forward [Member] \| Other Current Assets [Member] \| Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Currency forward contracts, assets	630		630
Foreign Exchange Forward [Member] \| Other Current Liabilities [Member]
Derivative, Fair Value, Net [Abstract]
Currency forward contracts, liabilities	524		524		1,157
Foreign Exchange Forward [Member] \| Other Current Liabilities [Member] \| Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Currency forward contracts, liabilities	524		524		$ 1,157
Operating Expense [Member] \| Designated as Hedging Instrument [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Summary of Derivative Instruments Impact on Results of Operations [Abstract]
Other (loss) income	23	$ (737)	$ 161	$ (3,010)
Nonoperating Income (Expense) [Member] \| Not Designated as Hedging Instrument [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Summary of Derivative Instruments Impact on Results of Operations [Abstract]
Other (loss) income	$ (271)			$ (543)