CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,354	$ 2,528
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	282	195
Gain from disposal of equipment		(7)
Share-based compensation	19	18
Non-cash lease expense	22
Amortization of loan fees	4
Gain on sale of investments		(356)
Deferred income taxes	97	742
Bad debt expense (recovery)	17	(13)
Changes in operating assets and liabilities:
Accounts receivable and other current receivables	1,400	(838)
Deferred costs	(62)	(143)
Inventory	(1,569)	(147)
Prepaid expenses and other assets	430	(46)
Accounts payable and accrued expenses	(771)	(301)
Deferred revenue	145	(1)
Income taxes payable	190	(123)
Net cash provided by operating activities	2,558	1,508
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	(1,271)	(1,365)
Purchases of equipment and leasehold improvements	(317)	(540)
Proceeds from sale of investments		1,905
Proceeds from sale of equipment		7
Increase in intangibles	(23)	(14)
Net cash used in investing activities	(1,611)	(7)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchases of common stock	(2,215)	(2,560)
Proceeds from exercise of options and ESPP contributions	15	17
Payment of employee payroll taxes on net issuance of common stock		(101)
Proceeds from Minnesota Bank & Trust long-term debt, net of fees		4,942
Principal payments on notes payable and capital lease	(314)	(116)
Net cash provided by (used in) financing activities	(2,514)	2,182
Net increase (decrease) in cash and cash equivalents	(1,567)	3,683
Cash and cash equivalents, beginning of period	7,742	5,188
Cash and cash equivalents, end of period	6,175	8,871
Cash paid during the period for:
Interest	103	66
Income taxes	$ 13	$ 305