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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
Share data in Thousands, unless otherwise specified
 12 Months Ended
Dec. 26, 2014
People
customer
Dec. 27, 2013
Dec. 28, 2012
Descriptions of business [Abstract]      
Number of customers 135,000tbi_NumberOfCustomers    
Number of people connected to work annually 750,000tbi_Numberofpeopleconnectedtoworkannually    
Advertising costs [Abstract]      
Advertising expense $ 6,200,000us-gaap_AdvertisingExpense $ 4,000,000us-gaap_AdvertisingExpense $ 3,700,000us-gaap_AdvertisingExpense
Accounts receivable and allowance for doubtful accounts      
Allowance for doubtful accounts $ 7,603,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 5,710,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent  
Property and equipment [Abstract]      
Operating Leases, Maximum Period Afforded to Each Party to Cancel Lease Agreements 90 days    
Shares of common stock outstanding [Abstract]      
Shares, Unvested Restricted Stock Included in Shares Outstanding, Shares 700tbi_SharesUnvestedRestrictedStockIncludedinSharesOutstandingShares 701tbi_SharesUnvestedRestrictedStockIncludedinSharesOutstandingShares  
Buildings      
Property and equipment [Abstract]      
Estimated useful life 40 years    
Minimum      
Leases [Abstract]      
Operating leases renewal option period 3 years    
Goodwill and indefinite-lived intangible assets [Abstract]      
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 20.00%us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Minimum | Computers and software      
Property and equipment [Abstract]      
Estimated useful life 3 years    
Minimum | Furniture and equipment      
Property and equipment [Abstract]      
Estimated useful life 3 years    
Maximum      
Leases [Abstract]      
Operating leases renewal option period 5 years    
Maximum | Computers and software      
Property and equipment [Abstract]      
Estimated useful life 10 years    
Maximum | Furniture and equipment      
Property and equipment [Abstract]      
Estimated useful life 10 years    
52 Weeks [Member]      
Fiscal period end [Abstract]      
Fiscal Period, Number of Weeks in Current Fiscal Year 364 days    
53 Weeks [Member]      
Fiscal period end [Abstract]      
Fiscal Period, Number of Weeks in Current Fiscal Year 365 days