Consolidated Statements Of Cash Flow - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows from Operating Activities
Net income (loss)	$ 2,944	$ (429)
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	1,701	1,660
Stock compensation expense	791	421
Asset impairment and related inventory write-down	(59)	440
Deferred income taxes	(593)	338
Loss (Gain) on disposal of assets	14	(2)
Allowance for doubtful accounts	121	(112)
Changes in assets and liabilities
Receivables	3,594	(2,773)
Inventories	(3,237)	(413)
Accounts payable	(1,010)	(969)
Accrued liabilities and expenses	(105)	(316)
Deferred revenue	(431)	10
Other assets and liabilities	(1,136)	(1,197)
Net cash provided by (used for) operating activities	2,594	(3,342)
Cash Flows from Investing Activities
Purchases of short-term investments	(4,402)	(2,030)
Sales of short-term investments	3,686	3,272
Capital expenditures	(481)	(397)
Capital expenditures-intangibles	(322)
Net cash (used for) provided by investing activities	(1,519)	845
Cash Flows from Financing Activities
(Payments to) proceeds from line of credit and short-term borrowings, net	(137)	667
Proceeds from stock plans	471	154
Shares surrendered upon restricted stock units and awards to cover taxes	(19)
Net cash provided by financing activities	315	821
Effect of Exchange Rate Changes on Cash and Cash Equivalents	271	(217)
Net Increase (Decrease) in Cash and Cash Equivalents	1,661	(1,893)
Cash and Cash Equivalents, July 1	3,704	6,787
Cash and Cash Equivalents, March 31	5,365	4,894
Supplemental Disclosure of Cash Flow Information
Cash paid during the year for interest	211	207
Cash paid during the year for income taxes	$ 605	$ 265