Balance Sheets - USD ($)	Mar. 31, 2020	Jun. 30, 2019
ASSETS:
Cash and cash equivalents	$ 4,390,559	$ 1,462,761
Investment securities	5,723,214	5,684,240
Trade accounts receivable, net of allowance of $3,000	5,107,139	10,995,783
Income tax receivable	79,469
Inventories:
Raw materials	2,113,130	1,747,449
Work-in-process	796,825	408,130
Costs related to contracts in process	14,186,291	11,069,558
Total inventories	17,096,246	13,225,137
Prepaid expenses and other current assets	758,641	494,181
Total current assets	33,155,268	31,862,102
Property, plant and equipment, net	3,602,638	3,825,411
Total assets	36,757,906	35,687,513
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable	1,536,083	2,160,433
Accrued expenses:
Salaries and wages	392,413	329,890
Vacation	785,806	786,870
ESOP payable	228,436
Other	191,606	109,755
Payroll and other taxes withheld	60,128	61,451
Contract liabilities	2,791,775	6,054
Income taxes payable		30,481
Total current liabilities	5,986,247	3,484,934
Deferred tax liabilities	254,801	277,075
Total liabilities	6,241,048	3,762,009
Commitments and contingencies (see Note 5)
Common stock, par value $.33-1/3 per share Authorized 10,000,000 shares; Issued 3,029,874 shares as of March 31, 2020 and June 30, 2019. Outstanding 2,402,633 and 2,401,213 as of March 31, 2020 and June 30, 2019, respectively (includes 3,541 and 14,166 Unearned ESOP shares, respectively)	1,009,958	1,009,958
Capital in excess of par value	18,924,725	18,731,975
Accumulated other comprehensive loss	(327)	(1,299)
Retained earnings	18,438,013	20,022,132
Total stockholders equity before ESOP	38,372,369	39,762,766
Less: Unearned ESOP shares	(204,706)	(204,706)
Cost of 627,241 and 628,661 shares of common stock in treasury as of March 31, 2020 and June 30, 2019, respectively	(7,650,805)	(7,632,556)
Total stockholders' equity	30,516,858	31,925,504
Total liabilities and stockholders' equity	$ 36,757,906	$ 35,687,513