Condensed Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows used in operating activities
Net loss	$ (82,000)	$ (130,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation, depletion, amortization, and valuation provision	7,000	8,000
Increase in accounts receivable	(3,000)	0
Increase in other assets	(1,000)	0
Decrease in accounts payable	(7,000)	(1,000)
Decrease in other accrued expenses	1,000	2,000
Net cash used in operating activities	(85,000)	(121,000)
Cash flows from investing activities	0	0
Cash flows from financing activities
Acquisition of treasury stock	(19,000)	(4,000)
Net cash used in financing activities	(19,000)	(4,000)
Net decrease in cash and cash equivalents	(104,000)	(125,000)
Cash and cash equivalents at beginning of year	2,141,000	2,266,000
Cash and cash equivalents at end of year	2,037,000	2,141,000
Noncash Investing and Financing Activities
Retirement of treasury stock	19,000	4,000
Recognition of right-of-use asset and operating lease liability	$ 0	$ 118,000