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FAIR VALUE MEASUREMENTS
6 Months Ended
Mar. 31, 2015
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS
FAIR VALUE MEASUREMENTS
 
The carrying values of cash and cash equivalents, accounts and other receivables, accounts payable and accrued current liabilities approximate their fair values due to the short-term nature of the instruments. The carrying value of the note receivable approximates fair value as it has been recorded at a discount using an interest rate based on market rates for similar instruments. The carrying value of long-term debt approximates fair value as the terms approximate current market terms for similar debt instruments of comparable risk and maturities.
 
The estimated fair values of oil and natural gas properties and the asset retirement obligation assumed in the acquisition of additional non-operated working interests located in the Progress area of Alberta, Canada, are based on an estimated discounted cash flow model and market assumptions. The significant Level 3 assumptions used in the calculation of estimated discounted cash flows included future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development, operating and asset retirement costs, projections of future rates of production, expected recovery rates and risk adjusted discount rates.