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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
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Restricted deposits - current and non-current | $ 1,113 us-gaap_RestrictedInvestmentsAtFairValue | $ 1,117 us-gaap_RestrictedInvestmentsAtFairValue
Derivative assets (liabilities) | (76)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet | (45)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Total | 1,037 us-gaap_FairValueNetAssetLiability | 1,072 us-gaap_FairValueNetAssetLiability
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Restricted deposits - current and non-current | 1,113 us-gaap_RestrictedInvestmentsAtFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 1,117 us-gaap_RestrictedInvestmentsAtFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Derivative assets (liabilities) | 2 us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 5 us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Total | 1,115 us-gaap_FairValueNetAssetLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 1,122 us-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

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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Fair value of asset after deduction of liability. + References No definition available. + Details
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- Definition The aggregate value of all restricted investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.9(c)) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.6(c)) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010 + Details
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