Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 7,337,000	$ 15,229,000
Restricted cash	795,000	795,000
Accounts receivable	2,584,000	3,190,000
Income tax receivable	144,000	83,000
Total Current Assets	10,860,000	19,297,000
Property and Equipment - at cost
Oil and gas properties (full cost method)	27,030,000	26,938,000
Rental equipment	412,000	412,000
Gas gathering system	115,000	115,000
Other property and equipment	315,000	315,000
Total Property and Equipment	27,872,000	27,780,000
Accumulated depreciation and amortization	(25,752,000)	(25,664,000)
Total Property and Equipment, Net	2,120,000	2,116,000
Real Estate Property - at cost
Land	688,000	688,000
Commercial office building	1,625,000	1,580,000
Accumulated depreciation	(1,006,000)	(992,000)
Total Real Estate Property	1,307,000	1,276,000
Other Assets
Deferred income tax asset	79,000	56,000
Other long-term investments - CDs	9,150,000	1,150,000
Other	3,000	3,000
Total Other Assets	9,232,000	1,209,000
Total Assets	23,519,000	23,898,000
Current Liabilities
Accounts payable and accrued liabilities	5,878,000	6,005,000
Total Current Liabilities	5,878,000	6,005,000
Noncurrent Liabilities
Asset retirement obligation	1,428,000	1,408,000
Total Noncurrent Liabilities	1,428,000	1,408,000
Total Liabilities	7,306,000	7,413,000
Shareholders' Equity
Common stock, $.01 par value, 100,000,000 shares authorized; 7,677,471 shares issued and 6,809,602 shares outstanding at March 31, 2020 and at December 31, 2019.	77,000	77,000
Additional paid-in capital	943,000	943,000
Treasury stock, at cost	(1,806,000)	(1,806,000)
Retained earnings	16,999,000	17,271,000
Total Shareholders' Equity	16,213,000	16,485,000
Total Liabilities and Shareholders' Equity	$ 23,519,000	$ 23,898,000