Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2024	Jun. 30, 2023
Current assets:
Cash and cash equivalents	$ 2,912,679	$ 3,091,062
Short term investments	7,020,288	17,064,274
Accounts receivable, less allowance for credit losses of $1,922 and $6,027, respectively	1,197,055	1,379,517
Inventories	4,661,005	6,423,441
Prepaid expenses and other current assets	1,117,276	1,002,514
Interest receivable	116,575	51,150
Income taxes receivable	210,778	86,901
Total current assets	17,235,656	29,098,859
Equipment and leasehold improvements, net	1,272,817	953,903
Other assets:
Long term investments	10,012,611
Operating lease right-of-use asset	2,825,348	3,015,887
Cash surrender value of life insurance	6,258,436	6,020,048
Total other assets	19,096,395	9,035,935
Total assets	37,604,868	39,088,697
Current liabilities:
Accounts payable	215,705	267,513
Accrued liabilities	901,297	1,342,039
Deferred revenue	292,795	450,312
Operating lease liability	236,570	236,225
Income taxes payable	5,281	87,237
Total current liabilities	1,651,648	2,383,326
Long-term liabilities:
Deferred compensation	2,110,507	1,997,120
Deferred revenue	117,402	113,003
Operating lease liability	2,602,838	2,787,970
Total long-term liabilities	4,830,747	4,898,093
Total liabilities	6,482,395	7,281,419
Stockholders' equity:
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 9,254,795 and 9,234,795, respectively	46,274	46,174
Paid in capital	13,269,630	13,113,993
Retained earnings	17,806,569	18,647,111
Total stockholders' equity	31,122,473	31,807,278
Total liabilities and stockholders' equity	$ 37,604,868	$ 39,088,697