Consolidated Statements Of Cash Flow - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities
Net income (loss)	$ 3,716	$ (168)	$ (22,113)
Adjustments to reconcile net income (loss) to net cash provided from (used for) operating activities:
Net cash provided from (used for) operating activities	3,864	(3,747)	(5,448)
Depreciation and amortization	2,276	2,194	2,137
Stock compensation expense	954	797	649
Asset impairment and related inventory write-down	(59)	476	858
Deferred income taxes	(544)	496	12,521
Loss (gain) on disposal of assets	28	(5)	201
Allowance for doubtful accounts	151	(16)	(128)
Changes in assets and liabilities
Receivables	21	(7,991)	5,496
Inventories	(2,286)	520	(537)
Accounts payable	(761)	(586)	1,201
Accrued liabilities and expenses	780	180	(2,626)
Deferred revenue	141	744	(1,048)
Other assets and liabilities	(553)	(388)	(2,059)
Cash Flows from Investing Activities
Purchases of short-term investments	(4,789)	(4,371)	(3,353)
Sales of short-term investments	5,535	4,290	5,788
Capital expenditures	(735)	(682)	(1,641)
Capital expenditures-intangibles	(418)	0	(129)
Net cash (used for) provided from investing activities	(407)	(763)	665
Cash Flows from Financing Activities
(Payments to) proceeds from lines of credit and short-term borrowings, net	(1,715)	1,303	(83)
Proceeds from stock plans	489	157	75
Cash payments for shares surrendered upon vesting of restricted stock units to cover taxes	(19)
Net cash (used for) provided from financing activities	(1,245)	1,460	(8)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(86)	(33)	76
Net Increase (Decrease) in Cash and Cash Equivalents	2,126	(3,083)	(4,715)
Cash and Cash Equivalents, July 1	3,704	6,787	11,502
Cash and Cash Equivalents, June 30	5,830	3,704	6,787
Non-Cash Investing and Financing Activity:
Debt related to Purchase of Building			585
Supplemental Disclosure of Cash Flow Information
Cash paid during the year for interest	260	274	261
Cash paid during the year for income taxes	$ 847	$ 555	$ 1,144

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The cash inflow associated with the amount received from the stock plan during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromStockPlans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.5)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration