Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities:
Net income	$ 5,211,303	$ 3,921,844
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	286,256	206,575
Depreciation	334,732	343,825
ESOP compensation expense	435,298	311,664
Deferred income tax benefit	(28,780)	(916,006)
(Gain) Loss on disposal of property, plant and equipment		590
Changes in assets and liabilities:
Decrease in trade accounts receivable	228,313	439,862
Decrease in income taxes receivable		35,666
Decrease in inventories	2,655,946	278,237
Increase in prepaid expenses and other current assets	(1,713,788)	728,069
Decrease in accounts payable	(1,675,574)	1,623,255
Decrease in accrued salaries and wages	(77,468)	(178,004)
Increase in vacation accrual	82,579	(119,481)
Increase in ESOP payable	(158,615)	(110,982)
Increase in other accrued expenses	601,763	437,611
Increase in payroll and other taxes withheld	6,495	4,549
Increase in contract liabilities	11,974,888	(375,829)
Increase in income taxes payable	56,423	719,217
Net cash provided by operating activities	18,219,771	7,350,662
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(2,509,088)	(4,501,997)
Proceeds from grant award		4,228,722
Proceeds from sale of property, plant and equipment		150
Purchase of investment securities	(26,616,220)	(18,442,671)
Proceeds from sale/maturity of investment securities	20,860,000	14,846,438
Net cash used in investing activities	(8,265,308)	(3,869,358)
Cash Flows from Financing Activities:
Dividends on common stock	(1,928,756)	(1,178,008)
Proceeds from exercise of stock options	1,481,785	504,213
Net cash used in financing activities	(446,971)	(673,795)
Increase in cash and cash equivalents	9,507,492	2,807,509
Cash and cash equivalents, beginning of period	4,351,970	2,748,755
Cash and cash equivalents, end of period	13,859,462	5,556,264
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 1,139,015	$ 1,162,000