XML 71 R55.htm IDEA: XBRL DOCUMENT
v3.23.3

Subsequent Events - Narrative (Details) - USD ($) | Oct. 26, 2023 | Sep. 30, 2023
--- | --- | ---
Subsequent Event [Line Items] |  |
Initial Borrowing Availability under ABL Facility |  | $ 180,000,000
Reduced Borrowing Availability under ABL Facility |  | 125,000,000
Minimum Liquidity under ABL Facility |  | 10,000,000
Nov-23 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 22,060,000
Dec-23 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 21,070,000
Jan-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 21,110,000
Feb-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 18,750,000
Mar-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 16,640,000
Apr-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 19,780,000
May-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 19,660,000
Jun-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 19,450,000
Jul-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 21,860,000
Aug-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 22,830,000
Sep-24 [Member] |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 25,370,000
Oct-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 26,070,000
Nov-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 27,640,000
Dec-24 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 29,640,000
Jan-25 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 29,740,000
Feb-25 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | 29,850,000
Mar-25 |  |
Subsequent Event [Line Items] |  |
Minimum EBITDA under ABL Facility |  | $ 29,980,000
Subsequent Event [Member] |  |
Subsequent Event [Line Items] |  |
Debt Instrument, Basis Spread on Variable Rate | 5.99% |
Debt Instrument, Interest Rate, Stated Percentage | 5.31% |
Debt Instrument, Periodic Payment, Principal | $ 1,700,000 |
Subsequent Event [Member] | Terphane Brazil Loan |  |
Subsequent Event [Line Items] |  |
Other Borrowings | 20,000,000 |
Subsequent Event [Member] | Tredegar intercompany |  |
Subsequent Event [Line Items] |  |
Other Borrowings | $ 20,000,000 |

X
- Definition Initial Borrowing Availability under ABL Facility + References No definition available. + Details
Name: | tg_InitialBorrowingAvailabilityUnderABLFacility
Namespace Prefix: | tg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum EBITDA under ABL Facility + References No definition available. + Details
Name: | tg_MinimumEBITDAUnderABLFacility
Namespace Prefix: | tg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Minimum Liquidity under ABL Facility + References No definition available. + Details
Name: | tg_MinimumLiquidityUnderABLFacility
Namespace Prefix: | tg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reduced Borrowing Availability under ABL Facility + References No definition available. + Details
Name: | tg_ReducedBorrowingAvailabilityUnderABLFacility
Namespace Prefix: | tg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_OtherBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Nov23Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Dec23Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Jan24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Feb24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Mar24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Apr24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_May24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Jun24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Jul24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Aug24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Sep24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Oct24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Nov24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Dec24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Jan25Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Feb25Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tg_MinimumEBITDAAxis=tg_Mar25Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=tg_TerphaneBrazilLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=tg_TredegarIntercompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |