XML 61 R44.htm IDEA: XBRL DOCUMENT
v3.21.1

Derivative Financial Instruments Terphane Future Cash Flow Hedges (Details) - Terphane Ltda [Member] R$ in Thousands, $ in Thousands | Mar. 31, 2021 USD ($) | Mar. 31, 2021 BRL (R$)
--- | --- | ---
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 12,465 | R$ 68,543
Percentage of Coverage Using Cash Flow Hedges | 77.00% | 77.00%
Foreign Currency Exchange Rate, Translation | 5.4988 | 5.4988
Apr-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,320 | R$ 7,229
Percentage of Coverage Using Cash Flow Hedges | 73.00% | 73.00%
Foreign Currency Exchange Rate, Translation | 5.4765 | 5.4765
May-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,285 | R$ 7,039
Percentage of Coverage Using Cash Flow Hedges | 71.00% | 71.00%
Foreign Currency Exchange Rate, Translation | 5.4778 | 5.4778
Jun-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,395 | R$ 7,656
Percentage of Coverage Using Cash Flow Hedges | 77.00% | 77.00%
Foreign Currency Exchange Rate, Translation | 5.4882 | 5.4882
Jul-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,450 | R$ 7,967
Percentage of Coverage Using Cash Flow Hedges | 80.00% | 80.00%
Foreign Currency Exchange Rate, Translation | 5.4945 | 5.4945
Aug-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,430 | R$ 7,864
Percentage of Coverage Using Cash Flow Hedges | 79.00% | 79.00%
Foreign Currency Exchange Rate, Translation | 5.4993 | 5.4993
Sep-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,520 | R$ 8,376
Percentage of Coverage Using Cash Flow Hedges | 84.00% | 84.00%
Foreign Currency Exchange Rate, Translation | 5.5105 | 5.5105
Oct-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,400 | R$ 7,714
Percentage of Coverage Using Cash Flow Hedges | 78.00% | 78.00%
Foreign Currency Exchange Rate, Translation | 5.5100 | 5.5100
Nov-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,495 | R$ 8,256
Percentage of Coverage Using Cash Flow Hedges | 83.00% | 83.00%
Foreign Currency Exchange Rate, Translation | 5.5224 | 5.5224
Dec-21 |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,170 | R$ 6,442
Percentage of Coverage Using Cash Flow Hedges | 65.00% | 65.00%
Foreign Currency Exchange Rate, Translation | 5.5060 | 5.5060

X
- Definition Percentage of Coverage Using Cash Flow Hedges + References No definition available. + Details
Name: | tg_PercentageofCoverageUsingCashFlowHedges
Namespace Prefix: | tg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901 + Details
Name: | us-gaap_ForeignCurrencyExchangeRateTranslation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=tg_TerphaneLtdaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Apr21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_May21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Jun21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Jul21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Aug21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Sep21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Oct21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Nov21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_CashFlowHedgeMaturityDateAxis=tg_Dec21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |