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Oil and Gas Reserve Data (Unaudited) - Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows to Proved Oil and Gas Reserves (Details) - USD ($)
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Extractive Industries [Abstract]    
Sales of oil and gas produced, net of production costs $ (1,902,000) $ (1,806,000)
Net changes in price and production costs (5,680,000) (2,871,000)
Changes in previously estimated development costs 2,623,000 865,000
Revisions of quantity estimates (5,954,000) (2,140,000)
Net change due to purchases and sales of minerals in place (54,000) (335,000)
Extensions and discoveries, less related costs 1,150,000 1,519,000
Net change in income taxes 2,070,000 404,000
Accretion of discount 1,376,000 2,164,000
Changes in timing of estimated cash flows and other 158,000 1,924,000
Changes in standardized measure (6,213,000) (276,000)
Standardized measure, beginning of year 18,976,000 19,252,000
Standardized measure, end of year $ 12,763,000 $ 18,976,000