XML 109 R69.htm IDEA: XBRL DOCUMENT v2.4.1.9
WORKERS' COMPENSATION INSURANCE AND RESERVES - Narrative (Details) (USD $)
 12 Months Ended
Dec. 26, 2014
Dec. 27, 2013
Dec. 28, 2012
Workers' Compensation Deductible Limit [Line Items]      
Workers' compensation claim deductible limit $ 2,000,000tbi_WorkersCompensationClaimDeductibleLimit    
Payments made against self-insured claims 60,600,000us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid 49,100,000us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid 38,300,000us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaid
Weighted average period - claim payments below deductible limit 4 years 6 months    
Weighted average period - claim payments and receivables above deductible limit 14 years 6 months    
Excess claims 42,612,000tbi_Discountedworkerscompensationreserveforexcessclaims 34,100,000tbi_Discountedworkerscompensationreserveforexcessclaims  
Workers' compensation claim receivables net of valuation allowance 38,700,000tbi_WorkersCompensationClaimReceivablesNetOfValuationAllowance 28,400,000tbi_WorkersCompensationClaimReceivablesNetOfValuationAllowance  
Workers' compensation expense $ 77,500,000tbi_WorkersCompensationExpense $ 63,200,000tbi_WorkersCompensationExpense $ 52,300,000tbi_WorkersCompensationExpense
Below limit      
Workers' Compensation Deductible Limit [Line Items]      
Weighted average rate 1.70%us-gaap_WeightedAverageDiscountRatePercent
/ tbi_WorkersCompensationDeductibleLimitAxis
= tbi_BelowLimitMember		 2.10%us-gaap_WeightedAverageDiscountRatePercent
/ tbi_WorkersCompensationDeductibleLimitAxis
= tbi_BelowLimitMember