CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,064	$ 1,158
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	184	150
Share-based compensation	300	26
Unrealized (gain) loss on marketable equity investments	(149)	107
Non-cash lease expense	6	9
Amortization of loan fees	2	2
Gain on sale of investments	0	(12)
Bad debt expense	5	3
Changes in operating assets and liabilities:
Accounts receivable and other receivables	834	(986)
Deferred costs	9	13
Inventory	(470)	(75)
Prepaid expenses and other assets	284	(198)
Accounts payable and accrued expenses	177	(767)
Deferred revenue	143	0
Income taxes payable	312	(318)
Net cash provided by (used in) operating activities	2,701	(888)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of equipment and improvements	(848)	(89)
Purchases of investments	(14)	0
Increase in intangibles	(12)	(1)
Proceeds from sale of investments	0	115
Net cash provided by (used in) investing activities	(874)	25
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on notes payable	(306)	(161)
Payment of employee payroll taxes on net issuance of common stock	0	(259)
Proceeds from stock option exercises and ESPP contributions	30	64
Repurchases of common stock	(95)	0
Net cash used in financing activities	(371)	(356)
Net increase (decrease) in cash and cash equivalents	1,456	(1,219)
Cash and cash equivalents, beginning of period	3,721	6,421
Cash and cash equivalents, end of period	5,177	5,202
Non-cash investing and financing activity:
Cashless stock option exercise	45	0
Interest	121	54
Income taxes, net of refunds	$ 0	$ 747