CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,104	$ 1,349
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	138	88
Share-based compensation	12	10
Non-cash lease expense	13
Amortization of loan fees	2
Gain on disposal of equipment		(7)
Deferred income tax	(41)	404
Bad debt expense (recovery)	12	(13)
Changes in operating assets and liabilities:
Accounts receivable and other receivables	931	(655)
Deferred costs	(63)	(50)
Inventory	(605)	(172)
Prepaid expenses and other assets	391	(152)
Accounts payable and accrued expenses	(1,040)	(82)
Deferred revenue	25	39
Income taxes payable	29	(123)
Net cash provided by operating activities	908	636
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of equipment	(61)	(477)
Purchases of investments	(1,258)	(824)
Decrease (increase) in intangibles	(4)	1
Proceeds from disposal of equipment		7
Net cash used in investing activities	(1,323)	(1,293)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on capital lease and notes payable	(159)	(10)
Borrowings from Minnesota Bank & Trust		5,000
Payment of employee payroll taxes on net issuance of common stock		(101)
Proceeds from ESPP Contributions	15	10
Repurchases of common stock	(681)	(1,115)
Net cash provided by (used in) financing activities	(825)	3,784
Net increase (decrease) in cash and cash equivalents	(1,240)	3,127
Cash and cash equivalents, beginning of period	7,742	5,188
Cash and cash equivalents, end of period	6,502	8,315
Cash paid during the period for:
Interest	63	20
Income taxes, net of refunds		$ 299