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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Comprehensive loss $ (1,420)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Foreign currency translation adjustments [Member]  
Comprehensive loss (614)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedTranslationAdjustmentMember
Unrealized loss on forward contracts [Member]  
Comprehensive loss $ (806)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember