Supplemental Schedules of Oil and Gas Information (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

	Year Ended December 31,
	2018			2017
Oil and Condensate (Bbls)
Proved Developed and Undeveloped Reserves:
Beginning of Year		376,396			401,584
Revisions of Previous Estimates		26,063			18,951
Extensions and Discoveries		13,699			16,405
Purchase of Reserves		------			---
Production		(52,960	)		(60,544	)
End of Year		363,198			376,396
Proved Developed Reserves:
Beginning of Year		341,152			358,822
End of Year		326,752			341,152
Gas (MCF)
Proved Developed and Undeveloped Reserves:
Beginning of Year		3,191,511			3,023,754
Revisions of Previous Estimates		75,610			494,665
Extensions and Discoveries		8,094			190,923
Purchase of Reserves		---			---
Production		(443,354	)		(517,831	)
End of Year		2,831,861			3,191,511
Proved Developed Reserves:
Beginning of Year		2,944,804			2,809,944
End of Year		2,576,738			2,944,804

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

	At December 31,
	2018			2017
Future Cash Inflows	$	28,398,588		$	25,418,030
Future Production and Development Costs		(14,212,906	)		(12,989,835	)
Future Asset Retirement Obligation		(1,873,939	)		(1,881,972	)
Future Income Tax Expense		(701,106	)		(362,534	)
Future Net Cash Flows		11,610,637			10,183,689
10% Annual Discount for Estimated Timing of Cash Flows		(3,749,911	)		(3,121,751	)
Standardized Measure of Discounted Future Net Cash Flows	$	7,860,726		$	7,061,938

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

	Year Ended December 31,
	2018			2017
Standardized Measure, Beginning of Year	$	7,061,938		$	5,254,075
Sales and Transfers, Net of Production Costs		(2,430,324	)		(2,343,561	)
Net Change in Sales and Transfer Prices, Net of Production Costs		2,156,124			2,394,155
Extensions, Discoveries and Improved Recoveries, Net of Future Production and Development Costs		332,441			710,294
Revisions of Quantity Estimates		442,030			929,958
Accretion of Discount		923,952			689,080
Purchases of Reserves in Place		---			---
Net Change in Income Taxes		(225,892	)		(517,818	)
Net Change in Asset Retirement Obligation		(47,659	)		17,383
Changes in Production Rates (Timing) and Other		(351,884	)		(71,628	)
Standardized Measure, End of Year	$	7,860,726		$	7,061,938