Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows from Operating Activities:
Net income	$ 2,781,596	$ 988,621
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	164,752	134,266
Depreciation	363,945	373,830
ESOP compensation expense	256,032	245,362
Deferred income tax benefit	(31,185)	(50,336)
Gain on disposal of assets	(2,500)	(2,000)
Changes in assets and liabilities:
Decrease (increase) in trade accounts receivable	1,402,789	(289,088)
Decrease in income taxes receivable		158,439
Increase in inventories	(128,088)	(152,211)
Increase in prepaid expenses and other current assets	(1,482,949)	(228,539)
Increase (decrease) in accounts payable	819,675	(619,925)
(Decrease) increase in accrued salaries and wages	(85,007)	101,487
Increase in vacation accrual	85,508	79,846
Decrease in ESOP payable	(25,629)
(Decrease) increase in other accrued expenses	(476,192)	145,789
Increase (decrease) in payroll and other taxes withheld	1,956	(350,924)
Increase in contract liabilities	3,181,714	276,461
Increase in income taxes payable	238,020
Net cash provided by operating activities	7,064,437	811,078
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(178,513)	(216,500)
Proceeds from sale of fixed assets	2,500	2,000
Purchase of investment securities	(14,335,777)	(3,692,458)
Proceeds from sale/maturity of investment securities	4,166,774	3,576,000
Net cash used in investing activities	(10,345,016)	(330,958)
Cash Flows from Financing Activities:
Dividends on common stock	(244,635)
Net cash used in financing activities	(244,635)
(Decrease) increase in cash and cash equivalents	(3,525,214)	480,120
Cash and cash equivalents, beginning of period	8,104,060	6,802,712
Cash and cash equivalents, end of period	4,578,846	7,282,832
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 561,500	$ 120,000