Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash Flows from Operating Activities:
Net (loss) income	$ 1,265,127	$ (181,543)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Stock-based compensation	176,696	133,663
Depreciation	494,635	519,813
ESOP compensation expense	325,067	353,897
Gain on disposal of assets	(119)
Loss on inventory reduction due to contract cancellation		710,207
Deferred income tax expense (benefit)	9,271	(64,396)
Changes in assets and liabilities:
(Increase) decrease in trade accounts receivables	(379,393)	3,659,624
Decrease (increase) in income tax receivable	249,602	(249,602)
Decrease (increase) in inventories	231,443	(4,714,044)
Increase in prepaid expenses and other current assets	(292,477)	(303,411)
Decrease in accounts payable	(638,996)	(143,523)
Increase in accrued salaries and wages	151,520	6,466
Decrease in vacation accrual	(6,231)	(17,223)
Increase (decrease) in other accrued expenses	626,540	(192,308)
(Decrease) increase in payroll and other taxes withheld	(354,589)	222,911
Increase in contract liabilities	306,869	902,370
Increase (decrease) in income taxes payable	54,722	(47,905)
Net cash provided by operating activities	2,219,687	594,996
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(303,561)	(43,554)
Proceeds from sale of fixed assets	2,000
Purchase of investment securities	(4,237,778)	(5,436,056)
Proceeds from sale/maturity of investment securities	3,621,000	7,486,520
Net cash provided by investing activities	(918,339)	2,006,910
Cash Flows from Financing Activities:
Dividends paid on common stock		(1,201,316)
Net cash used in financing activities		(1,201,316)
Increase in cash and cash equivalents	1,301,348	1,400,590
Cash and cash equivalents, beginning of the year	6,802,712	5,402,122
Cash and cash equivalents, end of the year	8,104,060	6,802,712
Supplemental Schedule of Cash Flow Information:
Income taxes paid net of refunds	$ 14,365	$ 175,250