Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities:
Net income	$ 3,506,816	$ 2,889,914
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	193,033	131,155
Depreciation	219,126	233,526
ESOP compensation expense	286,262	183,364
Deferred income tax benefit	30,705	(212,848)
Gain on disposal of property, plant and equipment		(150)
Changes in assets and liabilities:
Increase in trade accounts receivable	(358,350)	(205,985)
Decrease in income taxes receivable		35,666
Decrease in inventories	1,632,063	2,027,322
Decrease in prepaid expenses and other current assets	1,437,468	385,089
(Decrease) increase in accounts payable	(1,088,509)	892,011
Decrease in accrued salaries and wages	(425,868)	(382,530)
Increase (decrease) in vacation accrual	22,881	(163,645)
Decrease in ESOP payable	(105,744)	(70,093)
Increase in other accrued expenses	526,939	436,356
Decrease in payroll and other taxes withheld	(56,025)	(11,786)
Increase (decrease) in contract liabilities	832,205	(457,836)
Increase in income taxes payable	113,539	229,625
Net cash provided by operating activities	6,766,541	5,939,155
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(1,547,922)	(3,469,630)
Proceeds from grant award		968,722
Proceeds from sale of property, plant and equipment		150
Purchase of investment securities	(14,007,475)	(13,410,242)
Proceeds from sale/maturity of investment securities	12,620,000	11,508,438
Net cash used in investing activities	(2,935,397)	(4,402,562)
Cash Flows from Financing Activities:
Dividends on common stock	(1,279,061)	(741,895)
Proceeds from exercise of stock options	1,123,425	59,480
Net cash used in financing activities	(155,636)	(682,415)
Increase in cash and cash equivalents	3,675,508	854,178
Cash and cash equivalents, beginning of period	4,351,970	2,748,755
Cash and cash equivalents, end of period	8,027,478	3,602,933
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 639,014	$ 702,000