Supplemental Schedules of Oil and Gas Information (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table Text Block]

	Year Ended December 31,
	2019			2018
Oil and Condensate (Bbls)
Proved Developed and Undeveloped Reserves:
Beginning of Year		363,198			376,396
Revisions of Previous Estimates		(4,587	)		26,063
Extensions and Discoveries		9,383			13,699
Purchase of Reserves		19,219			---
Production		(56,051	)		(52,960	)
End of Year		331,162			363,198
Proved Developed Reserves:
Beginning of Year		326,752			341,152
End of Year		314,932			326,752
Gas (MCF)
Proved Developed and Undeveloped Reserves:
Beginning of Year		2,831,861			3,191,511
Revisions of Previous Estimates		(281,944	)		75,610
Extensions and Discoveries		377,521			8,094
Purchase of Reserves		7,860			---
Production		(474,865	)		(443,354	)
End of Year		2,460,433			2,831,861
Proved Developed Reserves:
Beginning of Year		2,576,738			2,944,804
End of Year		2,298,135			2,576,738

Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure [Table Text Block]

	At December 31,
	2019			2018
Future Cash Inflows	$	21,416,636		$	28,398,588
Future Production and Development Costs		(11,272,849	)		(14,212,906	)
Future Asset Retirement Obligation		(1,788,739	)		(1,873,939	)
Future Income Tax Expense		(294,018	)		(701,106	)
Future Net Cash Flows		8,061,030			11,610,637
10% Annual Discount for Estimated Timing of Cash Flows		(2,581,559	)		(3,749,911	)
Standardized Measure of Discounted Future Net Cash Flows	$	5,479,471		$	7,860,726

Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows [Table Text Block]

	Year Ended December 31,
	2019			2018
Standardized Measure, Beginning of Year	$	7,860,726		$	7,061,938
Sales and Transfers, Net of Production Costs		(1,836,618	)		(2,430,324	)
Net Change in Sales and Transfer Prices, Net of Production Costs		(1,962,275	)		2,156,124
Extensions, Discoveries and Improved Recoveries,
Net of Future Production and Development Costs		816,539			332,441
Revisions of Quantity Estimates		(259,068	)		442,030
Accretion of Discount		1,020,105			923,952
Purchases of Reserves in Place		318,332			---
Net Change in Income Taxes		276,171			(225,892	)
Net Change in Asset Retirement Obligation		1,823			(47,659	)
Changes in Production Rates (Timing) and Other		(756,264	)		(351,884	)
Standardized Measure, End of Year	$	5,479,471		$	7,860,726