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LONG-TERM DEBT Revolving Credit Facility Narrative (Details) - USD ($)
3 Months Ended
Jun. 01, 2016
May. 01, 2016
Apr. 01, 2016
Jan. 04, 2016
Jun. 30, 2014
Mar. 25, 2016
Dec. 25, 2015
Revolving Credit Facility [Line Items]              
Long-term debt           $ 165,920,000 $ 245,664,000
Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member]              
Revolving Credit Facility [Line Items]              
Long-term debt           $ 139,098,000 $ 218,086,000
Revolving Credit Facility, interest rate description         one-month    
Revolving Credit Facility, interest rate at period end           2.00%  
Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, maximum borrowing capacity       $ 330,000,000.0 $ 300,000,000    
Revolving Credit Facility, current borrowing capacity           $ 235,500,000  
Revolving Credit Facility, amount outstanding           4,800,000  
Line of Credit Facility, Increase (Decrease), Net       30,000,000.0      
Revolving Credit Facility, utilization threshold         25.00%    
Percent of Eligible Billed Accounts Receivable [Member] [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility Borrowing Limits, Percent of Accounts Receivable         90.00%    
Percent of Eligible Accounts Receivable [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility Borrowing Limits, Percent of Accounts Receivable         15.00%    
Percent of Eligible Unbilled Accounts Receivable [Member] [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility Borrowing Limits, Percent of Accounts Receivable         85.00%    
Liquidation Value of Tacoma Headquarters Office Building [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
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           14,800,000  
Revolving Credit Facility, Liquidity Requirement Component [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, remaining borrowing capacity           91,600,000  
Revolving Credit Facility, cash and cash equivalents under control agreements           23,600,000  
Revolving Credit Facility, total liquidity           $ 115,300,000  
London Interbank Offered Rate (LIBOR) [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, additional base rate         1.00% 1.50%  
Letters of Credit, additional basis rate         0.125%    
Base rate [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, additional base rate         0.50% 0.50%  
Minimum | Revolving Credit Facility, Liquidity Requirement Component [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, liquidity requirement       $ 10,000,000 $ 37,500,000    
Minimum | London Interbank Offered Rate (LIBOR) [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Debt Instrument, basis spread on variable rate         1.25%    
Minimum | Base rate [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Debt Instrument, basis spread on variable rate         0.25%    
Maximum | London Interbank Offered Rate (LIBOR) [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Debt Instrument, basis spread on variable rate         2.00%    
Maximum | Base rate [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Debt Instrument, basis spread on variable rate         1.00%    
Less than 25% utilization [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, unused capacity, commitment fee percentage         0.375%    
Greater than or equal to 25% utilization [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, unused capacity, commitment fee percentage         0.25%    
Scenario, Forecast [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Line of Credit Facility, Increase (Decrease), Net     $ (10,000,000.0)        
Scenario, Forecast [Member] | Minimum | Revolving Credit Facility, Liquidity Requirement Component [Member] | Bank of America, N.A. and Wells Fargo Capital Finance, LLC [Member] | Revolving Credit Facility [Member]              
Revolving Credit Facility [Line Items]              
Revolving Credit Facility, liquidity requirement $ 37,500,000 $ 28,600,000 $ 19,300,000