Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2023	Jun. 30, 2022
Current assets:
Cash and cash equivalents	$ 2,921,632	$ 9,208,170
Short term investments, amortized cost basis	12,045,520
Accounts receivable, less allowance for doubtful accounts of $36,262 and $2,027, respectively	1,235,411	1,846,620
Inventories, net	7,079,259	8,631,362
Prepaid expenses and other current assets	394,188	188,478
Interest receivable	56,014
Total current assets	23,732,024	19,874,630
Equipment and leasehold improvements, net	967,828	1,088,017
Other assets:
Long term investments, amortized cost basis	4,949,470
Operating lease right-of-use asset	3,074,952	3,247,725
Cash surrender value of life insurance	5,979,730	5,744,724
Total other assets	14,004,152	8,992,449
Total assets	38,704,004	29,955,096
Current liabilities:
Accounts payable	353,313	796,163
Accrued liabilities	870,822	560,356
Deferred revenue	379,061	543,891
Operating lease liability	233,152	223,530
Income taxes payable	250,203	3,033
Total current liabilities	2,086,551	2,126,973
Long-term liabilities:
Deferred compensation	2,000,012	1,937,229
Deferred revenue	125,732	169,210
Operating lease liability	2,848,191	3,024,195
Total long-term liabilities	4,973,935	5,130,634
Total liabilities	7,060,486	7,257,607
Stockholders' equity:
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 9,216,795 and 9,147,795, respectively	46,084	45,739
Paid in capital	13,034,075	12,653,402
Retained earnings	18,563,359	9,998,348
Total stockholders' equity	31,643,518	22,697,489
Total liabilities and stockholders' equity	$ 38,704,004	$ 29,955,096