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Warrant Liability (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Warrant liability [Line Items]    
Balance   $ 18,280tgls_WarrantLiabilityNonCurrent
Warrants Exercised   (60)tgls_WarrantsExercised
Fair value adjustment 4,585us-gaap_FairValueAdjustmentOfWarrants 13,525us-gaap_FairValueAdjustmentOfWarrants
Balance $ 31,745tgls_WarrantLiabilityNonCurrent $ 31,745tgls_WarrantLiabilityNonCurrent