XML 48 R37.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair Value Measurements (Summary Of Unobservable Inputs For Level 3 Fair Value Measurements) (Details)
9 Months Ended
Jun. 30, 2017
USD ($)
Oil Costless Collars [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Unobservable Input Oil price volatility curve
Weighted Average 13.73%
Fair Value Assets (Liabilities) $ 459,049
Oil Costless Collars [Member] | Minimum [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Range 0.00%
Oil Costless Collars [Member] | Maximum [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Range 21.50%
Natural Gas Costless Collars [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Unobservable Input Gas price volatility curve
Weighted Average 19.80%
Fair Value Assets (Liabilities) $ 260,125
Natural Gas Costless Collars [Member] | Minimum [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Range 0.00%
Natural Gas Costless Collars [Member] | Maximum [Member]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Range 34.96%