XML 26 R54.htm IDEA: XBRL DOCUMENT v2.4.1.9

Acquisitions (Schedule Of Amortized Periods For Acquired Intangible Assets) (Details)	12 Months Ended
	Dec. 31, 2014
Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	2 years
AACOA | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years
AACOA | Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	2 years
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years
Minimum | AACOA | Proprietary technology
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	6 years
Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	12 years
Maximum | AACOA | Proprietary technology
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable Intangible Asset, Useful Life (Yrs)	10 years

X

- Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=tg_AacoaIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: