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INCOME TAXES (Details) (USD $)
3 Months Ended 6 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Mar. 31, 2013
Apr. 01, 2012
Income Taxes [Line Items]        
Provision for income taxes $ 3,380,000 $ 4,681,000 $ 6,343,000 $ 4,372,000
U.S. statutory rate     35.00%  
Unrecognized tax benefit that would impact effective tax rate within next twelve months     $ 13,900,000  
Minimum | Internal Revenue Service (IRS)
       
Income Taxes [Line Items]        
Open tax years by major tax jurisdiction     2007  
Maximum | Internal Revenue Service (IRS)
       
Income Taxes [Line Items]        
Open tax years by major tax jurisdiction     2012