XML 74 R63.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Goodwill and Other Intangible Assets - Goodwill Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
Goodwill [Line Items] |  |  |  |
Goodwill | $ 319,390 | $ 334,640 |  | $ 316,650
Aerospace Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  |  | $ 133,700 |
Machined Products Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  |  | $ 12,700 |
Goodwill [Member] | Aerospace Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair Value Inputs, Valuation Method, Weighting Percentage Used, Income-Based Approach | 50.00% |  |  |
Fair Value Inputs, Valuation Method, Weighting Percentage Used, Market-Based Approach | 50.00% |  |  |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount | 15.00% |  | 34.00% |
Goodwill [Member] | Machined Products Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  |  | 13.00% |
Measurement Input, Long-term Revenue Growth Rate [Member] | Goodwill [Member] | Aerospace Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value inputs, valuation method, residual growth rate | 3.00% |  |  |
Measurement Input, Discount Rate [Member] | Goodwill [Member] | Aerospace Reporting Unit [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value inputs, valuation method, discount rate | 9.50% |  |  |

X
- Definition Fair Value Inputs, Valuation Method, Weighting Percentage Used, Income-Based Approach + References No definition available. + Details
Name: | trs_FairValueInputsValuationMethodWeightingPercentageUsedIncomeBasedApproach
Namespace Prefix: | trs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair Value Inputs, Valuation Method, Weighting Percentage Used, Market-Based Approach + References No definition available. + Details
Name: | trs_FairValueInputsValuationMethodWeightingPercentageUsedMarketBasedApproach
Namespace Prefix: | trs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value inputs, valuation method, discount rate + References No definition available. + Details
Name: | trs_Fairvalueinputsvaluationmethoddiscountrate
Namespace Prefix: | trs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value inputs, valuation method, residual growth rate + References No definition available. + Details
Name: | trs_Fairvalueinputsvaluationmethodresidualgrowthrate
Namespace Prefix: | trs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Percentage of fair value of reporting unit in excess of carrying amount. + References No definition available. + Details
Name: | us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ReportingUnitAxis=trs_AerospaceReportingUnitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReportingUnitAxis=trs_MachinedProductsReportingUnitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | trs_QuantitativeImpairmentTestAxis=us-gaap_GoodwillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLongTermRevenueGrowthRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |