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v2.4.0.8

Subsequent Event Debt Refinancing (Details) (Receivables Facility [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 Minimum [Member] | Mar. 31, 2014 Maximum [Member] | Jun. 30, 2014 Subsequent Event [Member]
Debt Instrument [Line Items] |  |  |  |  |
Secured debt, Maximum Borrowing Capacity | $ 105.0 |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.35% | 1.35% | 1.20% | 1.35% | 1.15%
Debt Instrument, Unused Borrowing Capacity, Fee percentage | 0.40% | 0.40% |  |  | 0.35%

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- Definition Debt Instrument, Unused Borrowing Capacity, Fee percentage + References No definition available. + Details
Name: | trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage
Namespace Prefix: | trs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the receivables facility debt arrangement. + References No definition available. + Details
Name: | trs_SecuredDebtMaximumBorrowingCapacity
Namespace Prefix: | trs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration