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Oil and Gas Reserve Data (Unaudited) - Schedule of Changes in Proved Reserves (Details)
 12 Months Ended
Mar. 31, 2020
bbl
Mcf
Mar. 31, 2019
bbl
Mcf
Oil [Member]    
Proved Developed and Undeveloped Reserves Beginning Period | bbl 1,040,000 1,197,000
Revision of previous estimates | bbl (72,000) (293,000)
Purchase of minerals in place | bbl
Extensions and discoveries | bbl 90,000 171,000
Sales of minerals in place | bbl (6,000)
Production | bbl (44,000) (35,000)
Proved Developed and Undeveloped Reserves Ending period | bbl 1,008,000 1,040,000
Natural Gas [Member]    
Proved Developed and Undeveloped Reserves Beginning Period | Mcf 5,381,000 5,487,000
Revision of previous estimates | Mcf (384,000) (430,000)
Purchase of minerals in place | Mcf
Extensions and discoveries | Mcf 175,000 619,000
Sales of minerals in place | Mcf (28,000)
Production | Mcf (294,000) (295,000)
Proved Developed and Undeveloped Reserves Ending period | Mcf 4,850,000 5,381,000