Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows used in operating activities
Net loss	$ (8,000)	$ (42,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation, depletion, and amortization	6,000	9,000
Increase in accounts receivable	(1,000)	(4,000)
Decrease in other current assets	10,000	10,000
Increase in accounts payable	(2,000)	3,000
Decrease in other accrued expenses	(4,000)	(3,000)
Net cash provided by (used in) operating activities	1,000	(27,000)
Cash flows from financing activities
Acquisition of treasury stock	(5,000)	(4,000)
Net cash used in financing activities	(5,000)	(4,000)
Net decrease in cash and cash equivalents	(4,000)	(31,000)
Cash and cash equivalents at beginning of period	2,274,000	2,349,000
Cash and cash equivalents at end of period	2,270,000	2,318,000
Noncash investing and financing activities
Retirement of property plant and equipment	0	3,000
Supplemental disclosures
Cash paid for interest	0	0
Cash paid for income taxes	$ 0	$ 0