XML 61 R41.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Retirement Plans And Other Postretirement Benefits (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Reconciliation Of Changes In Benefit Obligations And Plan Assets | The following tables reconcile the changes in benefit obligations and plan assets in 2015 and 2014, and reconcile the funded status to prepaid or accrued cost at December 31, 2015 and 2014:
| Pension Benefits |  |  | Other Post- Retirement Benefits
(In Thousands) | 2015 |  | 2014 |  |  | 2015 |  | 2014
Change in benefit obligation: |  |  |  |  |  |  |  |
Benefit obligation, beginning of year | $ | 325,426 |  |  | $ | 275,166 |  |  |  | $ | 8,372 |  |  | $ | 7,858 |
Service cost | 530 |  |  | 869 |  |  |  | 44 |  |  | 43 |
Interest cost | 13,217 |  |  | 13,397 |  |  |  | 325 |  |  | 387 |
Effect of actuarial (gains) losses related to the following: |  |  |  |  |  |  |  |
Discount rate change | (14,687 | ) |  | 32,089 |  |  |  | (356 | ) |  | 732 |
Retirement rate assumptions and mortality table adjustments | (5,456 | ) |  | 17,331 |  |  |  | 32 |  |  | (131 | )
Retiree medical participation rate change | — |  |  | — |  |  |  | — |  |  | (390 | )
Other | (746 | ) |  | 490 |  |  |  | (332 | ) |  | 218 |
Plan participant contributions | — |  |  | — |  |  |  | 625 |  |  | 681 |
Benefits paid | (14,432 | ) |  | (13,916 | ) |  |  | (965 | ) |  | (1,026 | )
Benefit obligation, end of year | $ | 303,852 |  |  | $ | 325,426 |  |  |  | $ | 7,745 |  |  | $ | 8,372 |
Change in plan assets: |  |  |  |  |  |  |  |
Plan assets at fair value, beginning of year | $ | 229,017 |  |  | $ | 232,705 |  |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | (6,311 | ) |  | 7,466 |  |  |  | — |  |  | — |
Employer contributions | 2,368 |  |  | 2,762 |  |  |  | 340 |  |  | 345 |
Plan participant contributions | — |  |  | — |  |  |  | 625 |  |  | 681 |
Benefits paid | (14,432 | ) |  | (13,916 | ) |  |  | (965 | ) |  | (1,026 | )
Plan assets at fair value, end of year | $ | 210,642 |  |  | $ | 229,017 |  |  |  | $ | — |  |  | $ | — |
Funded status of the plans | $ | (93,210 | ) |  | $ | (96,409 | ) |  |  | $ | (7,745 | ) |  | $ | (8,372 | )
Amounts recognized in the consolidated balance sheets: |  |  |  |  |  |  |  |
Accrued expenses (current) | $ | 210 |  |  | $ | 130 |  |  |  | $ | 455 |  |  | $ | 456 |
Other noncurrent liabilities | 93,000 |  |  | 96,279 |  |  |  | 7,290 |  |  | 7,916 |
Net amount recognized | $ | 93,210 |  |  | $ | 96,409 |  |  |  | $ | 7,745 |  |  | $ | 8,372 |
Components Of Net Periodic Benefit Income Or Cost For Continuing Operations | Assumptions used for financial reporting purposes to compute net benefit income or cost and benefit obligations for continuing operations, and the components of net periodic benefit income or cost for continuing operations, are as follows:
|  | Pension Benefits |  |  | Other Post- Retirement Benefits
(In Thousands, Except Percentages) | 2015 |  | 2014 |  | 2013 |  |  | 2015 |  | 2014 |  | 2013
Weighted-average assumptions used to determine benefit obligations: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 4.55 | % |  | 4.17 | % |  | 4.99 | % |  |  | 4.49 | % |  | 4.11 | % |  | 4.88 | %
Expected long-term return on plan assets | 7.00 | % |  | 7.50 | % |  | 7.75 | % |  |  | n/a |  |  | n/a |  |  | n/a |
Weighted-average assumptions used to determine net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 4.17 | % |  | 4.99 | % |  | 4.21 | % |  |  | 4.11 | % |  | 4.88 | % |  | 4.10 | %
Expected long-term return on plan assets | 7.50 | % |  | 7.75 | % |  | 7.75 | % |  |  | n/a |  |  | n/a |  |  | n/a |
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 530 |  |  | $ | 869 |  |  | $ | 3,754 |  |  |  | $ | 44 |  |  | $ | 43 |  |  | $ | 58 |
Interest cost | 13,217 |  |  | 13,397 |  |  | 12,338 |  |  |  | 325 |  |  | 387 |  |  | 345 |
Expected return on plan assets | (17,636 | ) |  | (18,301 | ) |  | (17,430 | ) |  |  | — |  |  | — |  |  | — |
Amortization of prior service costs and gains or losses | 16,190 |  |  | 10,688 |  |  | 15,028 |  |  |  | (194 | ) |  | (190 | ) |  | (210 | )
Settlement/curtailment | 45 |  |  | 81 |  |  | 28 |  |  |  | — |  |  | — |  |  | — |
Net periodic benefit cost | $ | 12,346 |  |  | $ | 6,734 |  |  | $ | 13,718 |  |  |  | $ | 175 |  |  | $ | 240 |  |  | $ | 193 |
Schedule Of Expected Benefit Payments For Continuing Operations | Expected benefit payments for continuing operations over the next five years and in the aggregate for 2021-2025 are as follows:
(In Thousands) | Pension Benefits |  | Other Post- Retirement Benefits
2016 | $ | 15,904 |  |  | $ | 455 |
2017 | 16,505 |  |  | 467 |
2018 | 16,969 |  |  | 478 |
2019 | 17,504 |  |  | 485 |
2020 | 17,997 |  |  | 489 |
2021—2025 | 94,105 |  |  | 2,468 |
Schedule Of Amounts Recognized Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income | Amounts recorded in 2015, 2014 and 2013 in accumulated other comprehensive income, before related deferred income taxes, consist of:
| Pension |  | Other Post-Retirement
(In Thousands) | 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013
Prior service cost (benefit) | $ | 18 |  |  | $ | 87 |  |  | $ | 270 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Net actuarial (gain) loss | 153,570 |  |  | 166,678 |  |  | 116,519 |  |  | (1,616 | ) |  | (1,154 | ) |  | (1,773 | )
Schedule Of Amounts Before Related Deferred Income Taxes In Accumulated Other Comprehensive Income That Are Expected To Be Recognized As Components Of Net Periodic Benefit Or Cost | The amounts in accumulated other comprehensive income, before related deferred income taxes, that are expected to be recognized as components of net periodic benefit or cost during 2016 are as follows:
(In Thousands) | Pension |  | Other Post- Retirement
Prior service cost (benefit) | $ | 9 |  |  | $ | — |
Net actuarial (gain) loss | 13,526 |  |  | (190 | )
Schedule Of Percentage Composition Of Assets Held By Pension Plans | The percentage composition of assets held by pension plans for continuing operations at December 31, 2015, 2014 and 2013 are as follows:
| % Composition of Plan Assets at December 31,
| 2015 |  | 2014 |  | 2013
Pension plans related to continuing operations: |  |  |  |  |
Fixed income securities | 12.8 | % |  | 14.5 | % |  | 14.0 | %
Large/mid-capitalization equity securities | 13.8 |  |  | 13.7 |  |  | 13.8 |
Small-capitalization equity securities | 4.0 |  |  | 4.3 |  |  | 4.8 |
International and emerging market equity securities | 10.9 |  |  | 11.0 |  |  | 11.7 |
Total equity securities | 28.7 |  |  | 29.0 |  |  | 30.3 |
Private equity and hedge funds | 52.4 |  |  | 51.2 |  |  | 48.3 |
Other assets | 6.1 |  |  | 5.3 |  |  | 7.4 |
Total for continuing operations | 100.0 | % |  | 100.0 | % |  | 100.0 | %
Schedule Of Targeted Allocation Percentage For Pension Plan Assets And Expected Long-Term Rate Of Return On Assets | targeted allocation percentage for pension plan assets and the expected long-term rate of return on assets used to determine its benefit obligation at December 31, 2015, are as follows:
| Target % Composition of Plan Assets * |  | Expected Long-term Return %
Pension plans related to continuing operations: |  |  |
Fixed income securities | 25.0 | % |  | 4.4 | %
Large/mid-capitalization equity securities | 14.0 |  |  | 8.8 |
Small-capitalization equity securities | 4.0 |  |  | 10.0 |
International and emerging market equity securities | 11.0 |  |  | 9.4 |
Total equity securities | 29.0 |  |  | 9.4 |
Private equity and hedge funds | 46.0 |  |  | 7.1 |
Total for continuing operations | 100.0 | % |  | 7.0 | %
* Target percentages for the composition of plan assets represents a neutral position within the approved range of allocations for such assets.
Schedule Of Pension Plan Assets Categorized By Level Within Fair Value Measurement Hierarchy | At December 31, 2015 and 2014, the pension plan assets are categorized by level within the fair value measurement hierarchy as follows:
(In Thousands) | Total |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Balances at December 31, 2015: |  |  |  |  |  |  |
Large/mid-capitalization equity securities | $ | 29,027 |  |  | $ | 29,027 |  |  | $ | — |  |  | $ | — |
Small-capitalization equity securities | 8,457 |  |  | 8,457 |  |  | — |  |  | — |
International and emerging market equity securities | 23,054 |  |  | 10,126 |  |  | 12,928 |  |  | — |
Fixed income securities | 22,968 |  |  | 10,626 |  |  | 12,342 |  |  | — |
Other assets | 2,727 |  |  | 2,727 |  |  | — |  |  | — |
Total plan assets at fair value | $ | 86,233 |  |  | $ | 60,963 |  |  | $ | 25,270 |  |  | $ | — |
Private equity and hedge funds | 110,340 |  |  |  |  |  |  |
Contracts with insurance companies | 10,207 |  |  |  |  |  |  |
Fixed income securities | 3,862 |  |  |  |  |  |  |
Total plan assets, December 31, 2015 | $ | 210,642 |  |  |  |  |  |  |
Balances at December 31, 2014: |  |  |  |  |  |  |
Large/mid-capitalization equity securities | $ | 31,401 |  |  | $ | 31,401 |  |  | $ | — |  |  | $ | — |
Small-capitalization equity securities | 9,827 |  |  | 9,827 |  |  | — |  |  | — |
International and emerging market equity securities | 25,224 |  |  | 11,471 |  |  | 13,753 |  |  | — |
Fixed income securities | 28,714 |  |  | 12,661 |  |  | 16,053 |  |  | — |
Other assets | 1,741 |  |  | 1,741 |  |  | — |  |  | — |
Total plan assets at fair value | $ | 96,907 |  |  | $ | 67,101 |  |  | $ | 29,806 |  |  | $ | — |
Private equity and hedge funds | 117,276 |  |  |  |  |  |  |
Contracts with insurance companies | 10,267 |  |  |  |  |  |  |
Fixed income securities | 4,567 |  |  |  |  |  |  |
Total plan assets, December 31, 2014 | $ | 229,017 |  |  |  |  |  |  |
Schedule Of Fair Value Measurements Of Plan Assets Using Significant Unobservable Inputs (Level 3), Reconciliation Of Balances |

X
- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets as well as the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References No definition available. + Details
Name: | tg_ScheduleOfAssumptionsUsedAndScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | tg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Percentage Composition Of Assets Held By Pension Plans [Table Text Block] + References No definition available. + Details
Name: | tg_ScheduleOfPercentageCompositionOfAssetsHeldByPensionPlansTableTextBlock
Namespace Prefix: | tg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Targeted Allocation Percentage For Pension Plan Assets And Expected Long-Term Rate Of Return On Assets [Table Text Block] + References No definition available. + Details
Name: | tg_ScheduleOfTargetedAllocationPercentageForPensionPlanAssetsAndExpectedLongTermRateOfReturnOnAssetsTableTextBlock
Namespace Prefix: | tg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(4) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration