CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2025	Jun. 30, 2025
Current assets:
Cash and cash equivalents	$ 2,464,838	$ 2,807,797
Short term investments	13,005,592	12,879,882
Accounts receivable, less allowance for credit losses of $2,043 at December 31, 2025 and June 30, 2025	1,010,400	1,135,672
Inventories	4,838,377	4,885,067
Prepaid expenses and other current assets	397,992	738,330
Interest receivable	129,831	121,178
Income taxes receivable	30,298	36,179
Total current assets	21,877,328	22,604,105
Equipment and leasehold improvements, net	1,647,879	1,476,898
Other assets:
Long term investments	3,994,317	4,000,774
Finance lease right-of-use asset	26,430
Operating lease right-of-use asset	2,389,617	2,518,088
Cash surrender value of life insurance	6,834,107	6,584,744
Total other assets	13,244,471	13,103,606
Total assets	36,769,678	37,184,609
Current liabilities:
Accounts payable	489,946	819,330
Accrued liabilities	659,947	582,140
Deferred revenue	249,113	242,644
Finance lease liability	10,151
Operating lease liability	259,282	252,579
Income taxes payable	35,848	42,958
Total current liabilities	1,704,287	1,939,651
Long-term liabilities:
Deferred compensation	2,446,703	2,226,454
Deferred revenue	133,166	119,314
Finance lease liability	16,776
Operating lease liability	2,157,816	2,289,155
Total long-term liabilities	4,754,461	4,634,923
Total liabilities	6,458,748	6,574,574
Stockholders' equity:
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 9,466,438 at December 31, 2025 and 9,456,438 at June 30, 2025, respectively	47,332	47,282
Paid in capital	13,763,907	13,741,384
Retained earnings	16,499,691	16,821,369
Total stockholders' equity	30,310,930	30,610,035
Total liabilities and stockholders' equity	$ 36,769,678	$ 37,184,609