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Significant Accounting Policies
6 Months Ended
Jun. 25, 2011
Significant Accounting Policies  
Significant Accounting Policies
(2) Significant Accounting Policies

Financial Instruments

The Company's financial instruments include cash equivalents, short and long term investments, trade and other accounts receivable, accounts payable, other accrued liabilities, current and non-current insurance claims and long term debt plus current maturities ("Debt"). The carrying value of cash equivalents, trade and other accounts receivable, accounts payable, current insurance claims and other accrued liabilities approximate fair value as the assets and liabilities are short term in nature. Short and long term investments are carried at fair value as further described in the "Investments" footnote below. The carrying value of non-current insurance claims approximate fair value as the Company generally has the ability to, but is not required to, settle claims in a short term. The Company's Debt includes borrowings under the Company's revolving credit facility plus borrowings relating to capital lease obligations used to finance trailing equipment. The interest rates on borrowings under the revolving credit facility are typically tied to short-term LIBOR rates that adjust monthly and, as such, carrying value approximates fair value. Interest rates on borrowings under capital leases approximate the interest rates that would currently be available to the Company under similar terms and, as such, carrying value approximates fair value.