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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Fair Value, Inputs, Level 1 [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Warrant Liability $ 0tgls_WarrantLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest Rate Swap Derivative Liability 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 2 [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Warrant Liability 0tgls_WarrantLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest Rate Swap Derivative Liability 139us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Fair Value, Inputs, Level 3 [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Warrant Liability 31,745tgls_WarrantLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest Rate Swap Derivative Liability $ 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member