Oil and Natural Gas Investments (Details) | Mar. 31, 2017USD ($) | Jan. 11, 2017USD ($) | Dec. 18, 2015USD ($) | Mar. 31, 2017USD ($) | Sep. 30, 2018USD ($) | Mar. 31, 2018 | Sep. 30, 2018USD ($) | Sep. 30, 2017USD ($) | Sep. 30, 2018USD ($) | Dec. 31, 2017USD ($) | Nov. 30, 2017 |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Development Wells Drilled, Net Productive | | | | | | 2 | | | | | |
Acquisition No. 2 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Asset Retirement Obligation, Liabilities Incurred (in Dollars) | | | | | | | $ 0 | $ 781,628 | | | |
Acquisition No. 3 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Asset Retirement Obligation, Liabilities Incurred (in Dollars) | | | | | | | $ 0 | $ 289,827 | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Wells in Process of Drilling | | | | | | | | | | | 6 |
Oasis Petroleum, Inc. [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | | | | | | | | | | | 8.00% |
Wells in Process of Drilling | | | | | | | | | | | 4 |
Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Productive Oil Wells, Number of Wells, Net | | | | | 221 | | 221 | | 221 | | |
Gas and Oil Area Undeveloped, Net | | | | | | | 247 | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | | | | | $ 7,800,000 | | |
Costs Incurred, Development Costs (in Dollars) | | | | | $ 500,000 | | $ 6,500,000 | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 1 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Gas and Oil Area Developed, Net | | | 11.00% | | | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | | $ 159,600,000 | | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 2 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Gas and Oil Area Developed, Net | | 11.00% | | | | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | $ 128,500,000 | | | | | | | | | |
Acquisition Costs, Period Cost (in Dollars) | | | | | | | | | | $ 43,000 | |
Asset Retirement Obligation, Liabilities Incurred (in Dollars) | | $ 800,000 | | | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 3 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Gas and Oil Area Developed, Net | 10.50% | | | | | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | | | $ 52,400,000 | | | | | | | |
Acquisition Costs, Period Cost (in Dollars) | | | | | | | | | | $ 80,000 | |
Asset Retirement Obligation, Liabilities Incurred (in Dollars) | $ 300,000 | | | | | | | | | | |
Number of Producing Partnership Wells Acquired | 82 | | | | | | | | | | |
Productive Oil Wells, Number of Wells, Net | 216 | | | 216 | | | | | | | |
Number of Future Development Partnership Locations Acquired | 150 | | | | | | | | | | |
Gas and Oil Area Undeveloped, Net | 253 | | | | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Whiting Petroleum [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | | | | | | | | | | | 29.00% |
Wells in Process of Drilling | | | | | | | | | | | 2 |
Sanish Field Located in Mountrail County, North Dakota [Member] | Minimum [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Gas and Oil Area Developed, Net | | | | | | | 25.00% | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Minimum [Member] | Acquisition No. 2 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | | 22.00% | | | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Minimum [Member] | Acquisition No. 3 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | 26.00% | | | 26.00% | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Maximum [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Gas and Oil Area Developed, Net | | | | | | | 26.00% | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Maximum [Member] | Acquisition No. 2 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | | 23.00% | | | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Maximum [Member] | Acquisition No. 3 [Member] | | | | | | | | | | | |
Oil and Natural Gas Investments (Details) [Line Items] | | | | | | | | | | | |
Working Interest | 27.00% | | | 27.00% | | | | | | | |