Financial Instruments

9 Months Ended

Jun. 30, 2011

Financial Instruments [Abstract]

Financial Instruments

2. Financial Instruments

Financial instruments consist of cash, receivables, payables, debt, and letters of credit. Their carrying values are estimated to approximate their fair values unless otherwise indicated due to their short maturities, variable interest rates plus a margin applicable to the credit risk associated with the revolving line of credit and comparable borrowing costs for equipment loans.