Goodwill Impairment Loss (Notes)	9 Months Ended
Sep. 30, 2014
Goodwill Impairment [Abstract]
Goodwill Disclosure [Text Block]	The Company assesses goodwill for impairment when events or circumstances indicate that the carrying value may not be recoverable, or at a minimum, on an annual basis (December 1^st of each year). Goodwill is assessed for impairment at the reporting unit level, and Tredegar’s reporting units are PE Films, PET Films and AACOA. The Company estimates the fair value of its reporting units using discounted cash flow analysis and comparative enterprise value-to-EBIDTA multiples. The operations of PET Films, which is also referred to as Flexible Packaging Films or Terphane, continue to be adversely impacted by competitive pressures that are primarily related to ongoing unfavorable economic conditions in its primary market of Brazil and excess global capacity in the industry. The Company believes that these conditions have shifted the competitive environment from a regional to a global landscape and have driven price convergence and lower product margins for Terphane in Brazil. While recent favorable anti-dumping rulings have been issued against China, Egypt and India, authorities in Brazil have initiated new investigations of dumping against Peru and Bahrain. In light of market trends, increased economic uncertainty and continued dumping activity in Brazil, the Company reassessed its projections for the timing and extent of a market recovery for Terphane in the third quarter of 2015. The Company’s assessment of future prospects and timing of a recovery under these conditions indicate that its current enterprise value is less than approximately $120 million (PET Films’ net assets excluding goodwill), the minimum value needed to have avoided a full write-off of its goodwill. Accordingly, a goodwill impairment charge of $44.5 million ($44.5 million after taxes) was recognized in PET Films in the third quarter of 2015. This impairment charge represents the entire amount of goodwill associated with the PET Films reporting unit. The goodwill of PE Films and AACOA will be tested for impairment at the annual testing date unless there is an indicator of impairment identified at an earlier date.

The Company assesses goodwill for impairment when events or circumstances indicate that the carrying value may not be recoverable, or at a minimum, on an annual basis (December 1^st of each year). Goodwill is assessed for impairment at the reporting unit level, and Tredegar’s reporting units are PE Films, PET Films and AACOA. The Company estimates the fair value of its reporting units using discounted cash flow analysis and comparative enterprise value-to-EBIDTA multiples. The operations of PET Films, which is also referred to as Flexible Packaging Films or Terphane, continue to be adversely impacted by competitive pressures that are primarily related to ongoing unfavorable economic conditions in its primary market of Brazil and excess global capacity in the industry. The Company believes that these conditions have shifted the competitive environment from a regional to a global landscape and have driven price convergence and lower product margins for Terphane in Brazil. While recent favorable anti-dumping rulings have been issued against China, Egypt and India, authorities in Brazil have initiated new investigations of dumping against Peru and Bahrain. In light of market trends, increased economic uncertainty and continued dumping activity in Brazil, the Company reassessed its projections for the timing and extent of a market recovery for Terphane in the third quarter of 2015.

The Company’s assessment of future prospects and timing of a recovery under these conditions indicate that its current enterprise value is less than approximately $120 million (PET Films’ net assets excluding goodwill), the minimum value needed to have avoided a full write-off of its goodwill. Accordingly, a goodwill impairment charge of $44.5 million ($44.5 million after taxes) was recognized in PET Films in the third quarter of 2015. This impairment charge represents the entire amount of goodwill associated with the PET Films reporting unit. The goodwill of PE Films and AACOA will be tested for impairment at the annual testing date unless there is an indicator of impairment identified at an earlier date.