CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net loss	$ (3,640,300)	$ (2,311,400)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss/(Gain) on sale of investments	11,100	(34,600)
Unrealized holding loss on investments	102,800	18,900
Extinguishment of debt	(433,800)	0
Depreciation and amortization	581,800	126,700
Deferred income taxes	(955,400)	(652,300)
Loss on disposal of subsidiary	0	405,400
Stock-based compensation	1,920,100	1,429,400
Change in fair value of contingent consideration	(42,500)	(118,500)
Changes in operating assets and liabilities:
Trade accounts receivable	(328,700)	(758,500)
Inventories	(1,383,900)	(697,700)
Carrying value of right of use assets	783,300	87,700
Income tax receivable	172,200	(1,500)
Prepaid and other current assets	(127,700)	57,400
Accounts payable	585,500	142,600
Contract liabilities	796,100	(20,000)
Lease liabilities	0	(51,000)
Bank overdraft	(281,100)	7,500
Other assets	107,100	0
Discontinued operations	25,400	0
Accrued expenses	(20,700)	(222,600)
Total adjustments	(55,000)	(281,100)
Net cash used in operating activities	(3,695,300)	(2,592,500)
Investing activities:
Redemption of investment securities	1,278,500	1,631,000
Purchase of investment securities	(5,422,700)	(6,609,200)
Proceeds from sale of assets of discontinued operations	0	440,000
Capital expenditures	(337,400)	(183,700)
Purchase of other intangible assets	(67,000)	(41,200)
Net cash used in investing activities	(4,548,600)	(4,763,100)
Financing activities:
Proceeds from issuance of common stock	$ 3,000,000	0
Issuance costs of common stock and warrants	(272,800)
Payments of contingent consideration	$ 0	(13,400)
Proceeds from Payroll Protection Program	0	433,800
Proceeds from stock options exercised	0	3,000
Net cash provided by financing activities	2,727,200	423,400
Effect of changes in foreign currency exchange rates	(90,500)	0
Net decrease in cash and cash equivalents	(5,607,200)	(6,932,200)
Cash and cash equivalents, beginning of year	9,675,200	7,559,700
Cash and cash equivalents, end of period	4,068,000	627,500
SUPPLEMENTAL DISCLOSURES
Income taxes	0	2,500
Record right-of-use assets	941,300	0
Record lease liabilities	$ 941,300	$ 0