XML 76 R58.htm IDEA: XBRL DOCUMENT v3.19.1

Derivative Financial Instruments Terphane Future Cash Flow Hedges (Details) - Terphane Ltda [Member] R$ in Thousands, $ in Thousands	Mar. 31, 2019 BRL (R$)	Mar. 31, 2019 USD ($)
Derivative [Line Items]
Derivative, Notional Amount	R$ 129,682	$ 33,675
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3.9	3.9
Apr-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,430	$ 2,025
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,669.0	3,669.0
May-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,451	$ 2,025
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,679.5	3,679.5
Jun-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,473	$ 2,025
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,690.4	3,690.4
Jul-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 6,989	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,882.6	3,882.6
Aug-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,011	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,895.0	3,895.0
Sep-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,033	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,907.0	3,907.0
Oct-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,056	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,920.3	3,920.3
Nov-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,080	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,933.1	3,933.1
Dec-19 [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 7,102	$ 1,800
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,945.5	3,945.5
Jan-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,356	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,825.6	3,825.6
Feb-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,366	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,833.1	3,833.1
Mar-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,373	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,837.7	3,837.7
Apr-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,384	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,845.6	3,845.6
May-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,395	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,853.9	3,853.9
Jun-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,407	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,862.1	3,862.1
Jul-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,422	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,872.7	3,872.7
Aug-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,439	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,885.0	3,885.0
Sep-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,455	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,896.4	3,896.4
Oct-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,471	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,907.9	3,907.9
Nov-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,486	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,918.7	3,918.7
Dec-20 [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount	R$ 5,503	$ 1,400
Percentage of Coverage Using Cash Flow Hedges	0.00%	0.00%
Foreign Currency Exchange Rate, Translation	3,930.6	3,930.6

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

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

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

+ 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_Apr19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_May19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Jun19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Jul19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Aug19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Sep19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Oct19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Nov19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Dec19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Jan20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Feb20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Mar20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Apr20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_May20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Jun20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Jul20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Aug20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Sep20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Oct20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Nov20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tg_CashFlowHedgeMaturityDateAxis=tg_Dec20MemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: