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DEBT Revolving Credit Facility Narrative (Details) (USD $) |  |  | 0 Months Ended |  |  | 9 Months Ended |  |  | 9 Months Ended |  | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended
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Sep. 26, 2014 | Dec. 27, 2013 | Jun. 30, 2014 Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Sep. 26, 2014 Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Dec. 27, 2013 Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Sep. 26, 2014 Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Synovus Bank [Member] | Dec. 27, 2013 Synovus Bank [Member] | Sep. 26, 2014 Percent of Eligible Billed Accounts Receivable [Member] [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Percent of Eligible Accounts Receivable [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Percent of Eligible Unbilled Accounts Receivable [Member] [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Liquidation Value of Tacoma Headquarters Office Building [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Revolving Credit Facility, Liquidity Requirement Component [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Jun. 30, 2014 London Interbank Offered Rate (LIBOR) [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 London Interbank Offered Rate (LIBOR) [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Feb. 04, 2013 London Interbank Offered Rate (LIBOR) [Member] Synovus Bank [Member] | Jun. 30, 2014 Base Rate [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Minimum [Member] Revolving Credit Facility, Liquidity Requirement Component [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Minimum [Member] Base Rate [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Maximum [Member] Base Rate [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Less than 25% utilization [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 Greater than or equal to 25% utilization [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 October 1, 2014 [Member] London Interbank Offered Rate (LIBOR) [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member] | Sep. 26, 2014 October 1, 2014 [Member] Base Rate [Member] Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] Revolving Credit Facility [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility Borrowing Limits, Percent of Accounts Receivable |  |  |  |  |  |  |  |  | 90.00% | 15.00% | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility Borrowing Limits, Liquidation Value Requirement, Pledged Real Estate |  |  |  |  |  |  |  |  |  |  |  | 17,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility Borrowing Limits, Quarterly Reduction, Liquidation Value of Pledged Real Estate |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility Borrowing Limits, Liquidation Value of Pledged Real Estate |  |  |  |  |  |  |  |  |  |  |  | 17,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  |  |  |  | 255,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt | 177,217,000 | 31,923,000 |  | 146,995,000 | 0 |  | 30,222,000 | 31,923,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  | 20,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  | 87,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility, Liquidity Requirement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37,500,000 |  |  |  |  |  |  |  |
Revolving Credit Facility, Cash and Cash Equivalents Under Control Agreements |  |  |  |  |  |  |  |  |  |  |  |  | 24,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility, Total Liquidity |  |  |  |  |  |  |  |  |  |  |  |  | $ 111,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.375% | 0.25% |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.50% |  |  | 1.25% | 0.25% | 2.00% | 1.00% |  |  |  |
Revolving Credit Facility, Additional Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  | 0.50% |  |  |  |  |  |  |  | 1.75% | 0.75%
Line of Credit Facility, Interest Rate Description |  |  | one-month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility, utilization rate |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit, Additional Basis Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.125% |  |  |  |  |  |  |  |  |  |  |

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Fronting fee interest rate percentage for issued letters of credit, excluding interest rate spread. + References No definition available. + Details
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- Definition The Base Rate is the greater of the prime rate (as announced by Bank of America), the federal funds rate plus an additional rate or the 30 day LIBOR rate plus an additional rate. + References No definition available. + Details
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- 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
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- Definition Maximum liquidation value of the pledged real estate for purposes of calculating the revolving credit facility borrowing limit. + References No definition available. + Details
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- 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
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- 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
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- 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
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- Definition The minimum liquidity required to be maintained in order to meet the terms of the revolving credit facility. + References No definition available. + Details
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- 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
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- Definition Revolving credit facility, utilization rate + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Details
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- 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- 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
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