CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,988	$ 2,908
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	366	320
Share-based compensation	575	64
Unrealized (gain) loss on marketable equity investments	152	(1,306)
Non-cash lease expense	8	15
Amortization of loan fees	4	5
Gain on sale of investments		(12)
Impairment of long-lived assets	46
Bad debt expense (recovery)	(2)	2
Changes in operating assets and liabilities:
Accounts receivable and other current receivables	2,081	535
Deferred costs	(231)	18
Inventory	(848)	(913)
Prepaid expenses and other assets	(577)	(247)
Accounts payable and accrued expenses	(376)	(110)
Deferred revenue	434
Income taxes payable	595	(190)
Net cash provided by operating activities	4,219	1,085
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	(334)
Purchases of equipment and improvements	(1,072)	(316)
Proceeds from sale of investments		115
Purchase of land and building		(6,499)
Increase in intangibles	(24)	(3)
Net cash used in investing activities	(1,430)	(6,703)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchases of common stock	(672)
Proceeds from exercise of options and ESPP contributions	30	64
Payment of employee payroll taxes on net issuance of common stock		(259)
Proceeds from Minnesota Bank & Trust long-term debt, net of fees		5,176
Principal payments on notes payable	(616)	(261)
Net cash provided by (used in) financing activities	(1,258)	4,720
Net increase (decrease) in cash and cash equivalents	1,531	(898)
Cash and cash equivalents, beginning of period	3,721	6,421
Cash and cash equivalents, end of period	5,252	5,523
Supplemental disclosures of cash flow information:
Interest	198	101
Income taxes	785	754
Non-cash investing and financing activity:
Cashless stock option exercise	$ 45	$ 4