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

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

No definition available.

Name:	tg_MinimumThicknessOfPerformanceEnhancingLayerOnFilmsRequiredToAvoidAntidumpingDutyOrder
Namespace Prefix:	tg_
Data Type:	num:lengthItemType
Balance Type:	na
Period Type:	instant