Discounted workers compensation reserve for excess claims.

No definition available.

Name:	tbi_Discountedworkerscompensationreserveforexcessclaims
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Estimated weighted average period in which claim payments are made and reimbursements from insurance carries are received for workers' compensation claims that are above the established deductible limit as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	tbi_WeightedAveragePeriodClaimPaymentsAndReceivablesAboveDeductibleLimit
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of risk retained by the entity for workers' compensation claims, on a per occurrence basis, before the insurance arrangement begins to provide coverage.

+ References

No definition available.

+ Details

Name:	tbi_WorkersCompensationClaimDeductibleLimit
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of reimbursement receivables from insurance carries pertaining to claims incurred of a workers compensation nature that are above the established deductible limit, net of a valuation allowance for reimbursement receivables that are expected to be uncollectible.

+ References

No definition available.

+ Details

Name:	tbi_WorkersCompensationClaimReceivablesNetOfValuationAllowance
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	tbi_WorkersCompensationDeductibleLimitLineItems
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- Definition

Workers' compensation expense recognized during the period for claims reserves net of changes in discount in non monopolistic jurisdictions; premiums in monopolistic jurisdictions; insurance premiums; changes in the valuation allowance related to receivables from insurance companies; and other miscellaneous expenses.

+ References

No definition available.

+ Details

Name:	tbi_WorkersCompensationExpense
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The average discount rate applied to insurance contracts to determine future policy benefits to be paid to or on behalf of policyholders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6482714&loc=d3e14881-158438

+ Details

Name:	us-gaap_WeightedAverageDiscountRatePercent
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

WORKERS' COMPENSATION INSURANCE AND RESERVES - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 26, 2014	Sep. 27, 2013	Dec. 27, 2013
Workers' Compensation Deductible Limit [Line Items]
Workers' compensation claim deductible limit			$ 2.0
Weighted average period - claim payments and receivables above deductible limit			15 years 6 months
Workers' compensation claim receivables net of valuation allowance	30.3		30.3		28.4
Workers' compensation expense	21.6	16.7	55.1	46.4
Below limit
Workers' Compensation Deductible Limit [Line Items]
Weighted average rate			1.80%
Above limit
Workers' Compensation Deductible Limit [Line Items]
Discounted workers compensation reserve for excess claims	$ 34.6		$ 34.6		$ 34.1