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Financial Instruments
9 Months Ended
Jul. 03, 2011
Fair Value Disclosures [Abstract] 
Financial Instruments

10. Financial Instruments

Financial instruments which potentially subject the Company to concentration of credit risk consist principally of cash equivalents and receivables. The Company limits the amount of credit exposure to each individual financial institution and places its temporary cash into investments of high credit quality. Concentrations of credit risk with respect to receivables are limited due to their dispersion across various companies and geographies.

The carrying amounts for certain of the Company's financial instruments, including cash and cash equivalents, accounts and notes receivable, accounts payable and other accrued liabilities approximate fair value because of their short maturities. The fair value of variable interest debt approximates its carrying amount. The estimated fair value of the Company's senior notes due at various dates through 2017 (which accounts for 95% of the Company's fixed interest debt obligations) is computed based on borrowing rates currently available to the Company for loans with similar terms and maturities. The estimated fair value of the Company's senior notes and its carrying amount outstanding as of the balance sheet dates is as follows (in thousands):

July 3, 2011 October 3, 2010
Senior notes - estimated fair value $ 126,513 $ 133,751
Senior notes - carrying amount 100,000 107,143