Balance Sheets - USD ($)	Mar. 31, 2021	Jun. 30, 2020
ASSETS:
Cash and cash equivalents	$ 8,488,936	$ 5,402,122
Investment securities	3,008,456	5,141,520
Trade accounts receivable, net of allowance of $3,000	2,257,441	9,013,405
Income tax receivable	168,201
Inventories:
Raw materials	2,070,313	2,057,778
Work-in-process	272,446	614,521
Costs related to contracts in process	16,920,015	12,115,756
Total inventories	19,262,774	14,788,055
Prepaid expenses and other current assets	452,451	396,886
Total current assets	33,638,259	34,741,988
Property, plant and equipment, net	3,101,918	3,466,778
Total assets	36,740,177	38,208,766
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable	2,860,165	2,861,696
Accrued expenses:
Salaries and wages	351,342	469,201
Vacation	773,264	689,834
ESOP payable	143,750
Other	157,644	318,322
Payroll and other taxes withheld	465,345	186,970
Contract liabilities	2,737,963	2,175,235
Income taxes payable		47,707
Total current liabilities	7,489,473	6,748,965
Deferred tax liabilities	179,312	232,953
Total liabilities	7,668,785	6,981,918
Commitments and contingencies (see Note 5)
Common stock, par value $.33-1/3 per share Authorized 10,000,000 shares; Issued 3,129,874 and 3,029,874 shares as of March 31, 2021 and June 30, 2020, respectively. Outstanding 2,702,633 and 2,402,633 as of March 31, 2021 and June 30, 2020, respectively (includes 288,245 and 0 Unearned ESOP shares, respectively)	1,043,291	1,009,958
Capital in excess of par value	23,021,052	19,073,213
Accumulated other comprehensive loss	(2,236)	(3,107)
Retained earnings	16,534,976	18,797,589
Total stockholders equity before ESOP	40,597,083	38,877,653
Less: Unearned ESOP shares	(5,487,000)
Less: Cost of 427,241 and 627,241 shares of common stock in treasury as of March 31, 2021 and June 30, 2020, respectively	(6,038,691)	(7,650,805)
Total stockholders' equity	29,071,392	31,226,848
Total liabilities and stockholders' equity	$ 36,740,177	$ 38,208,766