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COMMITMENTS AND CONTINGENCIES - Revolving Credit Facility (Details) (Revolving credit facility, Bank of America, N.A. and Wells Fargo Capital Finance, LLC, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012
Revolving Credit Facility [Line Items]
Maximum borrowing capacity	$ 80
Revolving credit facility, letter of credit	7.2
Fee percentage on unused capacity	0.25%
Excess Liquidity Greater than $40 million | Minimum
Revolving Credit Facility [Line Items]
Revolving credit facility, excess liquidity	40
Excess Liquidity Between $20 million and $40 million | Minimum
Revolving Credit Facility [Line Items]
Revolving credit facility, excess liquidity	20
Excess Liquidity Between $20 million and $40 million | Maximum
Revolving Credit Facility [Line Items]
Revolving credit facility, excess liquidity	40
Excess Liquidity Less than $20 million | Maximum
Revolving Credit Facility [Line Items]
Revolving credit facility, excess liquidity	20
Variable Interest Rate Spread, Prime Rate Loans | Excess Liquidity Greater than $40 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Variable Interest Rate Spread, Prime Rate Loans | Excess Liquidity Between $20 million and $40 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	0.75%
Variable Interest Rate Spread, Prime Rate Loans | Excess Liquidity Less than $20 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Variable Interest Rate Spread, LIBOR Rate Loans
Revolving Credit Facility [Line Items]
Additional basis rate on LIBOR margin	0.125%
Variable Interest Rate Spread, LIBOR Rate Loans | Excess Liquidity Greater than $40 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Variable Interest Rate Spread, LIBOR Rate Loans | Excess Liquidity Between $20 million and $40 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Variable Interest Rate Spread, LIBOR Rate Loans | Excess Liquidity Less than $20 million
Revolving Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Liquidity requirement component
Revolving Credit Facility [Line Items]
Revolving credit facility, unused portion	72.8
Cash and cash equivalents under control agreements	128.3
Revolving credit facility, total liquidity	201.1
Liquidity requirement component | Minimum
Revolving Credit Facility [Line Items]
Revolving credit facility, liquidity requirement	12
Percent of eligible accounts receivable
Revolving Credit Facility [Line Items]
Revolving credit facility borrowing limits, % of accounts receivable	85.00%
Liquidation value of pledged real estate
Revolving Credit Facility [Line Items]
Revolving credit facility borrowing limits, pledged real estate	15
Revolving credit facility borrowing limits, quarterly reduction of pledged real estate	0.4
Revolving credit facility borrowing limits, liquidation value of pledged real estate	$ 13.5

X

- Definition

Fronting fee interest rate percentage for issued letters of credit, excluding interest rate spread.

+ References

No definition available.

+ Details

Name:	tbi_LettersOfCreditAdditionalBasisRate
Namespace Prefix:	tbi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Under the terms of the revolving credit facility, the applicable interest rate spread added to the Prime or LIBOR Rate Loans interest rate for funds borrowed when excess liquidity is greater than a specified amount.

+ References

No definition available.

+ Details

Name:	tbi_LineOfCreditFacilityExcessLiquidity
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Current liquidation value of the pledged real estate as of the reporting date for the purpose of computing the revolving credit facility borrowing limit. This is the maximum liquidation value of the pledged real estate less the quarterly reduction. This borrowing limit is in addition to the borrowing limit as a percentage of eligible accounts receivable.

+ References

No definition available.

+ Details

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

X

- Definition

Maximum liquidation value of the pledged real estate for purposes of calculating the revolving credit facility borrowing limit.

+ References

No definition available.

+ Details

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

X

- Definition

Revolving credit facility borrowing limit as a percentage of eligible accounts receivable. This borrowing limit is in addition to the current liquidation value of the pledged real estate as of the reporting date for the purpose of computing the revolving credit facility borrowing limit.

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityBorrowingLimitsPercentOfAccountsReceivable
Namespace Prefix:	tbi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Quarterly reduction of the maximum liquidation value of the pledged real estate for the purposes of computing the revolving credit facility borrowing limit.

+ References

No definition available.

+ Details

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

X

- Definition

Cash and cash equivalents under control agreements as of the reporting date used to calculate liquidity for the purposes of meeting the excess liquidity terms under the revolving credit facility.

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityCashAndCashEquivalentsUnderControlAgreements
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date issued against the revolving credit facility.

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityLettersOfCredit
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The minimum liquidity required to be maintained in order to meet the terms of the revolving credit facility.

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityLiquidityRequirement
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Total liquidity as of the reporting date consisting of the unused portion of the revolving credit facility and cash and cash equivalents under control agreements for the purposes of meeting the excess liquidity terms under the revolving credit facility.

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityTotalLiquidity
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding and issued letters of credit).

+ References

No definition available.

+ Details

Name:	tbi_RevolvingCreditFacilityUnusedPortion
Namespace Prefix:	tbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration