XML 37 R30.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Pension And Other Post-Retirement Benefits (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract] |
Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs | The components of net periodic benefit cost for our pension and other post-retirement benefit programs reflected in consolidated results are shown below:
| Pension Benefits |  | Other Post-Retirement Benefits
| Three Months Ended June 30, |  | Three Months Ended June 30,
(In Thousands) | 2015 |  | 2014 |  | 2015 |  | 2014
Service cost | $ | 144 |  |  | $ | 105 |  |  | $ | 12 |  |  | $ | 13 |
Interest cost | 3,313 |  |  | 3,342 |  |  | 83 |  |  | 93 |
Expected return on plan assets | (4,407 | ) |  | (4,558 | ) |  | — |  |  | — |
Amortization of prior service costs, gains or losses and net transition asset | 4,024 |  |  | 2,814 |  |  | (40 | ) |  | (77 | )
Net periodic benefit cost | $ | 3,074 |  |  | $ | 1,703 |  |  | $ | 55 |  |  | $ | 29 |
| Pension Benefits |  | Other Post-Retirement Benefits
| Six Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Service cost | $ | 288 |  |  | $ | 649 |  |  | $ | 24 |  |  | $ | 26 |
Interest cost | 6,625 |  |  | 6,683 |  |  | 167 |  |  | 186 |
Expected return on plan assets | (8,814 | ) |  | (9,116 | ) |  | — |  |  | — |
Amortization of prior service costs, (gains) losses and net transition asset | 8,048 |  |  | 5,628 |  |  | (80 | ) |  | (154 | )
Curtailment charge | — |  |  | 81 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 6,147 |  |  | $ | 3,925 |  |  | $ | 111 |  |  | $ | 58 |

X
- Definition Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs [Table Text Block] + References No definition available. + Details
Name: | tg_ScheduleOfComponentsOfNetPeriodicBenefitCostForPensionAndOtherPostRetirementBenefitProgramsTableTextBlock
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