Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows from Operating Activities:
Net income	$ 3,921,844	$ 2,781,596
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	206,575	164,752
Depreciation	343,825	363,945
ESOP compensation expense	311,664	256,032
Deferred income tax benefit	(916,006)	(31,185)
Loss (Gain) on disposal of property, plant and equipment	590	(2,500)
Changes in assets and liabilities:
Decrease in trade accounts receivable	439,862	1,402,789
Decrease in income taxes receivable	35,666
Decrease (increase) in inventories	278,237	(128,088)
Decrease (increase) in prepaid expenses and other current assets	728,069	(1,482,949)
Increase in accounts payable	1,623,255	819,675
Decrease in accrued salaries and wages	(178,004)	(85,007)
(Decrease) increase in vacation accrual	(119,481)	85,508
Decrease in ESOP payable	(110,982)	(25,629)
Increase (decrease) in other accrued expenses	437,611	(476,192)
Increase in payroll and other taxes withheld	4,549	1,956
(Decrease) increase in contract liabilities	(375,829)	3,181,714
Increase in income taxes payable	719,217	238,020
Net cash provided by operating activities	7,350,662	7,064,437
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(4,501,997)	(178,513)
Proceeds from grant award	4,228,722
Proceeds from sale of property, plant and equipment	150	2,500
Purchase of investment securities	(18,442,671)	(14,335,777)
Proceeds from sale/maturity of investment securities	14,846,438	4,166,774
Net cash used in investing activities	(3,869,358)	(10,345,016)
Cash Flows from Financing Activities:
Dividends on common stock	(1,178,008)	(244,635)
Proceeds from exercise of stock options	504,213
Net cash used in financing activities	(673,795)	(244,635)
Increase (decrease) in cash and cash equivalents	2,807,509	(3,525,214)
Cash and cash equivalents, beginning of period	2,748,755	8,104,060
Cash and cash equivalents, end of period	5,556,264	4,578,846
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 1,162,000	$ 561,500