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Consolidated Statement of Shareholders' Equity Statement of Shareholder's Equity Parenthetical (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2014
Acquisition of remaining 30% interest in Arminak & Associates, LLC, tax | $ 0 | $ 8.4

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- Definition Acquisition of remaining 30% interest in Arminak & Associates, LLC, tax + References No definition available. + Details
Name: | trs_Acquisitionofremaining30interestinArminakAssociatesLLCtax
Namespace Prefix: | trs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration