XML 87 R65.htm IDEA: XBRL DOCUMENT
v3.19.1

Business Segments (Schedule Of Net Sales By Product Group) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group | [1],[2] | $ 1,029,444 | $ 927,647 | $ 799,272
PE Films [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 332,488 | 352,459 | 331,146
Flexible Packaging Films [Member] [Domain] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 123,830 | 108,355 | 108,028
Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 573,126 | 466,833 | 360,098
Personal Care Materials [Member] | PE Films [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 227,090 | 246,416 | 238,213
Surface protection films | PE Films [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 98,126 | 99,079 | 84,013
LED lighting products & other films | PE Films [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 7,272 | 6,964 | 8,920
Subtotal | PE Films [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 332,488 | 352,459 | 331,146
Nonresidential building & construction | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 289,572 | 239,713 | 212,863
Consumer durables | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 66,416 | 54,126 | 39,293
Residential building & construction | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 43,943 | 40,354 | 20,252
Machinery and Equipment | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 41,899 | 33,450 | 20,872
Automotive | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 48,037 | 38,261 | 34,700
Distribution | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 40,924 | 30,202 | 20,506
Electrical | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | 42,335 | 30,727 | 11,612
Subtotal | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net Sales by Product Group |  | $ 573,126 | $ 466,833 | $ 360,098
[1] | Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $31.1 million and $32.7 million at December 31, 2018 and 2017, respectively. Export sales relate almost entirely to PE Films. Operations outside the U.S. in The Netherlands, Hungary, China and India also relate to PE Films. Operations in Brazil are primarily related to Flexible Packaging Films, but also include PE Films operations. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[2] | The difference between total consolidated sales as reported in the consolidated statements of income and segment, geographic and product group net sales reported in this note is freight of $36.0 million in 2018, $33.7 million in 2017 and $29.1 million in 2016.

X
- Definition Aggregrate revenue during the period from the sales of goods in the normal course of business, after deducting returns, allowances, discounts, and charges for outbound freight. + References No definition available. + Details
Name: | tg_NetSales
Namespace Prefix: | tg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tg_PEFilmsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tg_FlexiblePackagingFilmsMemberDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tg_AluminumExtrusionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_PersonalCareMaterialsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_SurfaceProtectionFilmsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_FilmsForOtherMarketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_FilmProductsSubtotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_NonresidentialBuildingAndConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_ConsumerDurablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_ResidentialBuildingAndConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_AutomotiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_DistributionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_ElectricalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=tg_AluminumExtrusionsSubtotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |