Condensed Consolidated Balance Sheets - USD ($)	Dec. 31, 2024	Jun. 30, 2024
Current assets:
Cash and cash equivalents	$ 2,535,727	$ 2,837,081
Short term investments	7,164,281	12,104,459
Accounts receivable, less allowance for credit losses of $2,043 and $1,922 at December 31, 2024 and June 30, 2024, respectively	1,370,071	1,208,319
Inventories	4,570,621	4,473,680
Prepaid expenses and other current assets	942,194	1,081,437
Interest receivable	98,506	170,429
Income taxes receivable	42,131	41,756
Total current assets	16,723,531	21,917,161
Equipment and leasehold improvements, net	1,529,086	1,223,391
Other assets:
Long term investments	10,000,634	4,994,327
Operating lease right-of-use asset	2,643,336	2,765,445
Cash surrender value of life insurance	6,539,328	6,299,155
Total other assets	19,183,298	14,058,927
Total assets	37,435,915	37,199,479
Current liabilities:
Accounts payable	256,143	329,829
Accrued liabilities	858,200	462,858
Deferred revenue	288,016	229,384
Operating lease liability	246,049	239,688
Income taxes payable	28,831	35,899
Total current liabilities	1,677,239	1,297,658
Long-term liabilities:
Deferred compensation	2,227,789	2,093,124
Deferred revenue	119,897	119,787
Operating lease liability	2,417,098	2,541,734
Total long-term liabilities	4,764,784	4,754,645
Total liabilities	6,442,023	6,052,303
Stockholders' equity:
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 9,375,795 at December 31, 2024 and 9,299,795 at June 30, 2024, respectively	46,879	46,499
Paid in capital	13,576,206	13,404,477
Retained earnings	17,370,807	17,696,200
Total stockholders' equity	30,993,892	31,147,176
Total liabilities and stockholders' equity	$ 37,435,915	$ 37,199,479