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Contingencies (Details)	Jan. 08, 2013 in
Loss Contingencies [Line Items]
Minimum thickness of performance enhancing layer on films required to avoid antidumping duty order	0.00001

X

- Definition

Minimum thickness of performance enhancing layer on films required to avoid antidumping duty order.

+ References

No definition available.

+ Details

Name:	tg_MinimumThicknessOfPerformanceEnhancingLayerOnFilmsRequiredToAvoidAntidumpingDutyOrder
Namespace Prefix:	tg_
Data Type:	num:lengthItemType
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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration