Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Income from continuing operations	$ 370,000	$ 383,000
Adjustments to reconcile income from continuing operations to net cash provided by operating activities, continuing operations:
Depreciation	21,000	22,000
Deferred income taxes	(32,000)	(44,000)
Income taxes	168,000	172,000
Other, net changes in prepaids, property tax payable and other	126,000	93,000
Net cash provided by operating activities, continuing operations	653,000	626,000
Continuing operations:
Deferred revenue		26,000
Discontinued operations:
Cash used to settle obligations	(16,000)	(53,000)
Noncash adjustment to gain on sale of discontinued operations	4,000	13,000
Net cash used in discontinued operations	(12,000)	(40,000)
Net cash used in investing activities	(12,000)	(14,000)
Cash flows used in financing activities, payment of dividends	(462,000)	(462,000)
Increase in cash and cash equivalents	179,000	150,000
Cash and cash equivalents, beginning	1,443,000	1,642,000
Cash and cash equivalents, ending	$ 1,622,000	1,792,000
Supplemental disclosure:
Cash paid for income taxes		$ 7,000