XML 105 R85.htm IDEA: XBRL DOCUMENT v3.25.0.1

Business Segments (Schedule Of Net Sales By Geographic Area) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	$ 577,014	$ 551,566	$ 735,443
United States
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	514,743	506,475	675,528
Exports From The United States | Asia
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	46,724	26,217	41,841
Exports From The United States | Canada
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	9,541	12,121	10,477
Exports From The United States | Europe
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	97	9	1,384
Exports From The United States | Latin America
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	5,068	6,192	5,587
Operations Outside The United States | Asia
Segment Reporting Information [Line Items]
Net Sales by Geographic Area, Total	$ 841	$ 552	$ 626

X

- Definition

Aggregrate revenue during the period from the sales of goods in the normal course of business, after deducting returns, allowances, discounts, and charges for outbound freight.

+ References

No definition available.

+ Details

Name:	tg_NetSales
Namespace Prefix:	tg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

X

- Details

Name:	srt_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=tg_ExportsFromUnitedStatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_AsiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_LatinAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=tg_OperationsOutsideUnitedStatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: