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Fair Value Measurements - Schedule of Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Restricted deposits - current and non-current $ 1,113us-gaap_RestrictedInvestmentsAtFairValue $ 1,117us-gaap_RestrictedInvestmentsAtFairValue
Derivative assets (liabilities) (76)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet (45)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Total 1,037us-gaap_FairValueNetAssetLiability 1,072us-gaap_FairValueNetAssetLiability
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Restricted deposits - current and non-current 1,113us-gaap_RestrictedInvestmentsAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
1,117us-gaap_RestrictedInvestmentsAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Derivative assets (liabilities) 2us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
5us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Total 1,115us-gaap_FairValueNetAssetLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
1,122us-gaap_FairValueNetAssetLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Restricted deposits - current and non-current      
Derivative assets (liabilities)      
Total      
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Restricted deposits - current and non-current      
Derivative assets (liabilities) (78)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
(50)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Total $ (78)us-gaap_FairValueNetAssetLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
$ (50)us-gaap_FairValueNetAssetLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member