Oil and Gas Reserve Data (Unaudited) - Schedule of Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Details) - USD ($)	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Extractive Industries [Abstract]
Future cash inflows	$ 38,144,000	$ 61,676,000
Future production costs and taxes	(11,248,000)	(16,682,000)
Future development costs	(3,213,000)	(6,984,000)
Future income taxes	(1,714,000)	(4,675,000)
Future net cash flows	21,969,000	33,335,000
Annual 10% discount for estimated timing of cash flows	(9,206,000)	(14,359,000)
Standardized measure of discounted future net cash flows	$ 12,763,000	$ 18,976,000	$ 19,252,000