Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net income (loss)	$ 9,944,743	$ (99,359)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for doubtful accounts of accounts receivable	7,469	480
Depreciation of equipment and leasehold improvements	67,610	80,438
Noncash operating lease expense	2,556
Stock-based compensation expense	88,035	138,876
Change in cash surrender value of life insurance	(140,298)	(167,084)
Provision for deferred compensation	42,301	88,810
Deferred compensation paid		(37,500)
Net changes in operating assets and liabilities:
Accounts receivable	66,019	120,587
Inventories	732,866	(1,390,691)
Prepaid expenses and other current assets	(209,989)	(194,087)
Income taxes payable	597,941	1,031
Accounts payable	(274,746)	624,512
Accrued liabilities	954,343	(11,661)
Deferred revenue	(186,736)	(82,445)
Net cash provided by (used in) operating activities	11,692,114	(928,093)
Investing activities:
Purchase of equipment and leasehold improvements	(11,773)	(57,194)
Life insurance premiums paid	(87,994)	(95,726)
Net cash (used in) investing activities	(99,767)	(152,920)
Financing activities:
Proceeds from exercise of stock options	70,440	1,364,046
Net cash provided by financing activities	70,440	1,364,046
Net increase in cash and cash equivalents	11,662,787	283,033
Cash and cash equivalents at beginning of period	9,208,170	6,950,215
Cash and cash equivalents at end of period	$ 20,870,957	$ 7,233,248