Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Income from continuing operations	$ 1,363,000	$ 1,455,000
Adjustments to reconcile income from continuing operations to net cash provided by operating activities, continuing operations:
Depreciation	64,000	64,000
Deferred income taxes	(94,000)	(38,000)
Income taxes	102,000	65,000
Other, net changes in prepaids, property tax payable and other	306,000	294,000
Net cash provided by operating activities, continuing operations	1,741,000	1,840,000
Continuing operations:
Deferred revenue		(199,000)
Discontinued operations:
Cash used to settle obligations	(86,000)	(108,000)
Noncash adjustment to gain on sale of discontinued operations	24,000	29,000
Net cash used in discontinued operations	(62,000)	(79,000)
Net cash used in investing activities	(62,000)	(278,000)
Cash flows used in financing activities, payment of dividends	(1,386,000)	(1,386,000)
Increase in cash and cash equivalents	293,000	176,000
Cash and cash equivalents, beginning	1,443,000	1,642,000
Cash and cash equivalents, ending	1,736,000	1,818,000
Supplemental disclosure:
Cash paid for income taxes	$ 485,000	$ 502,000