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FAIR VALUE MEASUREMENT (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 27, 2015
Dec. 26, 2014
Fair Value Measurement [Line Items]    
Restricted investments classified as held-to-maturity $ 86,945us-gaap_HeldToMaturitySecuritiesFairValue $ 91,066us-gaap_HeldToMaturitySecuritiesFairValue
Certificate of deposits    
Fair Value Measurement [Line Items]    
Marketable securities classified as available-for-sale   1,500us-gaap_AvailableForSaleSecuritiesDebtSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CertificatesOfDepositMember
Carrying Value    
Fair Value Measurement [Line Items]    
Cash and cash equivalents 17,779us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
[1] 19,666us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
[1]
Carrying Value | Restricted Assets    
Fair Value Measurement [Line Items]    
Restricted cash and cash equivalents 75,427us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] 68,359us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1]
Other restricted assets 11,261tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2] 9,972tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2]
Restricted investments classified as held-to-maturity 85,351us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
90,095us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
Total Fair Value    
Fair Value Measurement [Line Items]    
Cash and cash equivalents 17,779us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
[1] 19,666us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
[1]
Total Fair Value | Certificate of deposits    
Fair Value Measurement [Line Items]    
Marketable securities classified as available-for-sale   1,500us-gaap_AvailableForSaleSecuritiesDebtSecurities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CertificatesOfDepositMember
[3]
Total Fair Value | Restricted Assets    
Fair Value Measurement [Line Items]    
Restricted cash and cash equivalents 75,427us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] 68,359us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1]
Other restricted assets 11,261tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2] 9,972tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2]
Restricted investments classified as held-to-maturity 86,945us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
91,066us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
Level 1    
Fair Value Measurement [Line Items]    
Cash and cash equivalents 17,779us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
[1] 19,666us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
[1]
Marketable securities classified as available-for-sale   0us-gaap_AvailableForSaleSecuritiesDebtSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
[3]
Level 1 | Restricted Assets    
Fair Value Measurement [Line Items]    
Restricted cash and cash equivalents 75,427us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] 68,359us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1]
Other restricted assets 11,261tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2] 9,972tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2]
Restricted investments classified as held-to-maturity 0us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
0us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
Level 2    
Fair Value Measurement [Line Items]    
Cash and cash equivalents 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
[1] 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
[1]
Level 2 | Restricted Assets    
Fair Value Measurement [Line Items]    
Restricted cash and cash equivalents 0us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] 0us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1]
Other restricted assets 0tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2] 0tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2]
Restricted investments classified as held-to-maturity 86,945us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
91,066us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
Level 3    
Fair Value Measurement [Line Items]    
Cash and cash equivalents 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
[1] 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
[1]
Marketable securities classified as available-for-sale      [3]
Level 3 | Restricted Assets    
Fair Value Measurement [Line Items]    
Restricted cash and cash equivalents 0us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] 0us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1]
Other restricted assets 0tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2] 0tbi_OtherRestrictedInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[2]
Restricted investments classified as held-to-maturity $ 0us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
$ 0us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis
= tbi_RestrictedAssetsMember
[1] Cash equivalents and restricted cash equivalents consist of money market funds, deposits, and investments with original maturities of three months or less.
[2] Other restricted assets primarily consist of deferred compensation plan accounts, which are comprised of mutual funds.
[3] At March 27, 2015 we held no marketable securities. At December 26, 2014, all our marketable securities, which consisted of CDs, had stated maturities of less than one year.