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STOCK-BASED COMPENSATION - Employee Stock Purchase Plan (Details) (Employee stock purchase plan, USD $)	12 Months Ended
	Dec. 26, 2014	Dec. 27, 2013	Dec. 28, 2012
Employee stock purchase plan
Employee Stock Purchase Plan [Abstract]
ESPP shares reserved for purchase	1,000,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember
Maximum employee subscription rate	10.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember
Purchase price of common stock, percent of market value	85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember
Employee stock purchase plan requisite service period	1 month
Stock issued under employee stock purchase plan (in shares)	64,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember	69,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember	95,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember
Weighted average price per share	$ 21.55tbi_StockIssuedDuringPeriodEmployeeStockPurchasePlansWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember	$ 17.10tbi_StockIssuedDuringPeriodEmployeeStockPurchasePlansWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember	$ 12.41tbi_StockIssuedDuringPeriodEmployeeStockPurchasePlansWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember

X

- Details

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X

- Definition

The service period to qualify employees for stock purchases under the employee stock purchase plan, which begins on the enrollment date and ends on the purchase date.

+ References

No definition available.

+ Details

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- Definition

Stock Issued During Period, Employee Stock Purchase Plans, Weighted Average Exercise Price

+ References

No definition available.

+ Details

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X

- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

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

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X

- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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X

- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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