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SIGNIFICANT ACCOUNTING POLICIES - Benefits and Investment (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
SIGNIFICANT ACCOUNTING POLICIES |  |  |
Premium paid for split dollar life insurance agreements | $ 0 | $ 0 | $ 0
Amount received on termination of certain split dollar agreements |  | $ 7,591 | $ 6,496

X
- Definition Represents the amount paid as premium for the split dollar life insurance agreements. + References No definition available. + Details
Name: | tr_PremiumPaidForSplitDollarLifeInsuranceAgreements
Namespace Prefix: | tr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount received on termination of the split dollar life insurance agreements. + References No definition available. + Details
Name: | tr_ProceedsFromTerminationOfSplitDollarLifeInsuranceAgreements
Namespace Prefix: | tr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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