Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities:
Net (loss) income	$ (196,553)	$ 621,373
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	11,303	11,906
Other Nonoperating Income (Expense)	0	(758,021)
Change in operating assets and liabilities:
Increaser(Decrease) in Accounts Receivable	267,398	141,000
Increase (Decrease) in Inventories	200,069	(21,820)
Increase (Decrease) in Other Operating Assets	(24,630)	(4,585)
Increase (Decrease) in Other Noncurrent Assets	0	(10,873)
Increase (Decrease) in Deferred Revenue	(48,553)	(333)
Increase (decrease) in liabilities of discontinued operations	3,664	(3,439)
Increase (Decrease) in Accounts Payable	158,946	24,851
Increase (Decrease) in Accrued Liabilities	133,015	33,295
Change in accrued post-retirement benefits	0	(25,473)
Payments for Leasing Costs	(73,754)	(82,910)
Other Operating Activities, Cash Flow Statement	74,310	82,195
Increase (Decrease) in Other Deferred Liability	35,864	0
Net Cash Provided by (Used in) Operating Activities	541,079	7,166
Net Cash provided by (used in) Financing Activities:
Repayments of Notes Payable	(889)	(822)
Net Cash Provided by (Used in) Financing Activities	(889)	(822)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	540,190	6,344
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,621,429
Cash and cash equivalents, beginning of period	1,365,954
Restricted Cash	255,475
Cash, cash equivalent and restricted cash, end of period	1,621,429
Supplemental Schedule of Cash Flow Information:
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 2,854	$ 5,827