CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,602	$ 2,354
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	320	282
Share-based compensation	64	19
Non-cash lease expense	15	22
Amortization of loan fees	5	4
Gain on sale of investments	(12)
Deferred income taxes		97
Bad debt expense (recovery)	(2)	17
Changes in operating assets and liabilities:
Accounts receivable and other current receivables	535	1,400
Deferred costs	18	(62)
Inventory	(913)	(1,569)
Prepaid expenses and other assets	(247)	430
Accounts payable and accrued expenses	(110)	(771)
Deferred revenue		145
Income taxes payable	(190)	190
Net cash provided by operating activities	1,085	2,558
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments		(1,271)
Purchases of equipment and leasehold improvements	(316)	(317)
Proceeds from sale of investments	115
Purchase of land and building	(6,499)
Increase in intangibles	(3)	(23)
Net cash used in investing activities	(6,703)	(1,611)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchases of common stock		(2,215)
Proceeds from exercise of options and ESPP contributions	64	15
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 and capital lease	(261)	(314)
Net cash provided by (used in) financing activities	4,720	(2,514)
Net decrease in cash and cash equivalents	(898)	(1,567)
Cash and cash equivalents, beginning of period	6,421	7,742
Cash and cash equivalents, end of period	5,523	6,175
Cash paid during the period for:
Interest	101	103
Income taxes	754	13
Non-cash investing and financing activity:
Cashless stock option exercise	$ 4