CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,076	$ 1,064
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	193	184
Share-based compensation	207	300
Unrealized (gain) loss on marketable equity investments	(250)	(149)
Non-cash lease expense	2	6
Amortization of loan fees	2	2
Gain on sale of investments	(6)
Deferred income taxes	32
Bad debt expense	2	5
Changes in operating assets and liabilities:
Accounts receivable and other receivables	4,337	834
Deferred costs	123	9
Inventory	(2,986)	(470)
Prepaid expenses and other assets	(138)	284
Accounts payable and accrued expenses	273	177
Deferred revenue	(162)	143
Income taxes payable	187	312
Net cash provided by operating activities	2,892	2,701
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of equipment and improvements	(178)	(848)
Purchases of investments		(14)
Increase in intangibles		(12)
Proceeds from sale of investments	88
Net cash used in investing activities	(90)	(874)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on notes payable	(1,318)	(306)
Proceeds from Minnesota Bank & Trust loans, net of origination fees	1,000
Proceeds from stock option exercises and ESPP contributions	42	30
Payments of employee taxes on net issuance of common stock	(223)
Repurchases of common stock	(354)	(95)
Net cash used in financing activities	(853)	(371)
Net increase in cash and cash equivalents	1,949	1,456
Cash and cash equivalents, beginning of period	849	3,721
Cash and cash equivalents, end of period	2,798	5,177
Non-cash investing and financing activity:
Cashless stock option exercise		45
Cash paid during the period for:
Interest	89	121
Income taxes, net of refunds	$ 241