Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 988,621	$ (1,061,297)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation	134,266	106,286
Depreciation	373,830	399,197
ESOP compensation expense	245,362	218,750
Gain on disposal of assets	(2,000)
Deferred income tax benefit	(50,336)	(53,873)
Changes in assets and liabilities:
(Increase) decrease in trade accounts receivable	(289,088)	6,755,964
Decrease (increase) in income taxes receivable	158,439	(168,201)
Increase in inventories	(152,211)	(4,474,719)
Increase in prepaid expenses and other current assets	(228,539)	(55,565)
Decrease in accounts payable	(619,925)	(1,531)
Increase (decrease) in accrued salaries and wages	101,487	(117,859)
Increase in vacation accrual	79,846	83,430
Decrease in ESOP Payable		(75,000)
Increase (decrease) in other accrued expenses	145,789	(160,678)
(Decrease) increase in payroll and other taxes withheld	(350,924)	278,375
Increase in contract liabilities	276,461	562,728
Decrease in income taxes payable		(47,707)
Net cash provided by operating activities	811,078	2,188,300
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(216,500)	(34,337)
Proceeds from sale of fixed assets	2,000
Purchase of investment securities	(3,692,458)	(4,294,897)
Proceeds from sale/maturity of investment securities	3,576,000	6,429,064
Net cash (used in) provided by investing activities	(330,958)	2,099,830
Cash Flows from Financing Activities:
Dividends on common stock		(1,201,316)
Net cash used in financing activities		(1,201,316)
Increase in cash and cash equivalents	480,120	3,086,814
Cash and cash equivalents, beginning of period	6,802,712	5,402,122
Cash and cash equivalents, end of period	7,282,832	8,488,936
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 120,000	$ 175,250