Oil and Gas Investments (Details) $ in Millions | Mar. 31, 2017 | Jan. 11, 2017USD ($) | Dec. 18, 2015USD ($) | Mar. 31, 2017USD ($) | Mar. 31, 2020USD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018 | Mar. 31, 2020USD ($) | Dec. 31, 2019USD ($) |
Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | $ 13 | $ 52 | | $ 65 | |
Wells Elected to Participate in Drilling | | | | | 10 | 33 | | 43 | |
Costs Incurred, Development Costs (in Dollars) | | | | | | | | $ 39 | |
Minimum [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | $ 5 | | | | |
Maximum [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | 7 | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Oil and Gas, Development Well Drilled, Net Productive, Number | | | | | | | 6 | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | 65 | | | | $ 7.8 |
Costs Incurred, Development Costs (in Dollars) | | | | | 39 | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 1 [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Gas and Oil Area Developed, Net | | | 11.00% | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | | $ 159.6 | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 2 [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Gas and Oil Area Developed, Net | | 11.00% | | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | $ 128.5 | | | | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Acquisition No. 3 [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Gas and Oil Area Developed, Net | 10.50% | | | | | | | | |
Business Combination, Consideration Transferred (in Dollars) | | | | $ 52.4 | | | | | |
Number of Producing Partnership Wells Acquired | 82 | | | | | | | | |
Oil, Productive Well, 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] | Minimum [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | 5 | | | | |
Sanish Field Located in Mountrail County, North Dakota [Member] | Maximum [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Estimated Capital Expenditures, Drilling and Completion of Wells (in Dollars) | | | | | $ 7 | | | | |
Whiting Petroleum [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Oil and Gas, Development Well Drilled, Net Productive, Number | | | | | | | 2 | | |
Whiting Petroleum [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Oil and Gas, Development Well Drilled, Net Productive, Number | | | | | | | 2 | | |
Working Interest | | | | | | | 29.00% | | |
Oasis Petroleum, Inc. [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Oil and Gas, Development Well Drilled, Net Productive, Number | | | | | | | 4 | | |
Working Interest | | | | | | | 8.00% | | |
Non-operated Completed Wells [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Oil and Gas, Development Well Drilled, Net Productive, Number | | | | | | | | 14 | |
Working Interest | | | | | 22.00% | | | 22.00% | |
Non-operated Completed Wells [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Gas and Oil Area Developed, Net | | | | | 25.00% | | | | |
Oil, Productive Well, Number of Wells, Net | | | | | 235 | | | 235 | |
Non-operated Wells in the Process of Drilling [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Working Interest | | | | | 20.00% | | | 20.00% | |
Oil and Gas, Present Activity, Well in Process of Drilling | | | | | 26 | | | 26 | |
Non-operated Wells in the Process of Drilling [Member] | Sanish Field Located in Mountrail County, North Dakota [Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Gas and Oil Area Developed, Net | | | | | 20.00% | | | | |
Oil and Gas, Present Activity, Well in Process of Drilling | | | | | 26 | | | 26 | |
Wells Drilling Not Yet Commenced {Member] | | | | | | | | | |
Oil and Gas Investments (Details) [Line Items] | | | | | | | | | |
Working Interest | | | | | 19.00% | | | 19.00% | |
Number of Wells, Drilling not yet Commenced | | | | | 3 | | | | |