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DEBT -Narrative (Details)
 3 Months Ended 9 Months Ended
Aug. 28, 2015
USD ($)
Jul. 02, 2015
$ / shares
Jul. 02, 2014
USD ($)
Jun. 15, 2011
USD ($)
$ / shares
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Jun. 10, 2015
convertible_debt_instrument
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]                  
Amortization of debt issuance costs           $ 1,645,000 $ 2,060,000    
Carrying amount of liability         $ 216,604,000 216,604,000     $ 213,121,000
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Line of credit facility outstanding         $ 165,000,000 $ 165,000,000     $ 266,900,000
Weighted average interest rate on debt         1.70% 1.70%     1.70%
Available borrowings under senior secured revolving credit facility         $ 586,900,000 $ 586,900,000      
Line of credit facility, fair value of amount outstanding         153,700,000 153,700,000      
Term Loan                  
Debt Instrument [Line Items]                  
Line of credit facility outstanding         $ 348,100,000 $ 348,100,000      
Weighted average interest rate on debt         1.70% 1.70%      
Long-term debt, fair value         $ 326,200,000 $ 326,200,000      
Convertible Debt                  
Debt Instrument [Line Items]                  
Principal amount outstanding       $ 230,000,000 227,097,000 227,097,000     $ 230,000,000
Interest rate on debt       1.625%          
Portion of the debt proceeds that was classified as equity at the time of the offering       $ 43,200,000          
Effective interest rate implicit in the liability component       5.60%          
Common stock based on initial conversion rate ratio (in shares)   18.9287   17.4092          
Principal amount to be considered for conversion purpose       $ 1,000          
Initial conversion price, per share | $ / shares   $ 52.83   $ 57.44          
Maximum selling price of company's common stock       150.00%          
Principal amount of notes per average trading price       $ 1,000          
Maximum average conversion value of the Notes       98.00%          
Number debt instruments pending conversion | convertible_debt_instrument               2,903  
Repayments of Debt         $ 2,900,000        
Stock Issued During Period, Shares, Conversion of Convertible Securities | shares         8,457        
Strike price of the call transaction (in dollars per share) | $ / shares   52.83   $ 57.44          
Strike price of warrant transactions (in dollars per share) | $ / shares   $ 64.43   $ 70.05          
Carrying amount of liability         $ 216,600,000 216,600,000     213,100,000
Unamortized discount         10,500,000 10,500,000     $ 16,900,000
Fair value of outstanding borrowings         $ 272,100,000 $ 272,100,000      
August 2015 Amendment                  
Debt Instrument [Line Items]                  
Senior credit facility, maximum borrowing capacity $ 1,100,000,000                
Additional commitments 200,000,000                
Cash balance threshold above which excess amount is not subject to any restriction of use or investment $ 40,000,000                
August 2015 Amendment | Minimum                  
Debt Instrument [Line Items]                  
Line of credit, commitment fee percentage 0.15%                
August 2015 Amendment | Maximum                  
Debt Instrument [Line Items]                  
Line of credit, commitment fee percentage 0.30%                
August 2015 Amendment | Standby Letters of Credit                  
Debt Instrument [Line Items]                  
Senior credit facility, maximum borrowing capacity $ 60,000,000                
August 2015 Amendment | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Senior credit facility, maximum borrowing capacity 750,000,000                
August 2015 Amendment | Swingline Loan                  
Debt Instrument [Line Items]                  
Senior credit facility, maximum borrowing capacity $ 60,000,000                
August 2015 Amendment | Federal Funds                  
Debt Instrument [Line Items]                  
Interest rates available to the Company at its option 0.50%                
August 2015 Amendment | (LIBOR)                  
Debt Instrument [Line Items]                  
Interest rates available to the Company at its option 1.00%                
August 2015 Amendment | Eurodollar | Minimum                  
Debt Instrument [Line Items]                  
Interest rates available to the Company at its option 1.00%                
August 2015 Amendment | Eurodollar | Maximum                  
Debt Instrument [Line Items]                  
Interest rates available to the Company at its option 1.75%                
August 2015 Amendment | Term Loan                  
Debt Instrument [Line Items]                  
Senior credit facility, maximum borrowing capacity $ 350,000,000                
Proceeds from lines of credit $ 200,000,000                
July 2014 Amendment                  
Debt Instrument [Line Items]                  
Proceeds from lines of credit     $ 422,000,000            
Deferred finance costs, gross     3,200,000            
Amortization of debt issuance costs     300,000            
July 2014 Amendment | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Proceeds from lines of credit     272,000,000            
July 2014 Amendment | Term Loan                  
Debt Instrument [Line Items]                  
Proceeds from lines of credit     $ 150,000,000