Note 9 - Concentrations (Details Textual) $ in Thousands	12 Months Ended
Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Distributor 1 [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage	28.00%	28.00%
Distributor 1 [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Concentration Risk, Percentage	23.00%	15.00%
Distributor 1 [Member]
Accounts Receivable, Net, Current	$ 901	$ 1,423
Revenue, Net	$ 2,797	$ 2,358
Customer 1 [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage	19.00%	12.00%
Customer 1 [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Concentration Risk, Percentage	21.00%	16.00%
Customer 1 [Member]
Accounts Receivable, Net, Current	$ 620	$ 615
Revenue, Net	$ 2,475	$ 2,549
Distributor 2 [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage	10.00%	10.00%
Distributor 2 [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Concentration Risk, Percentage		14.00%
Distributor 2 [Member]
Accounts Receivable, Net, Current	$ 320	$ 520
Revenue, Net		$ 2,303
Distributor 3 [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage		14.00%
Distributor 3 [Member]
Accounts Receivable, Net, Current		$ 697
Supplier Concentration Risk [Member] \| Cost of Goods, Total [Member] \| Supplier 1 [Member]
Concentration Risk, Percentage	65.00%	45.00%
Supplier Concentration Risk [Member] \| Cost of Goods, Total [Member] \| Supplier 2 [Member]
Concentration Risk, Percentage	21.00%	17.00%
Supplier Concentration Risk [Member] \| Cost of Goods, Total [Member] \| Supplier 3 [Member]
Concentration Risk, Percentage		13.00%
Accounts Receivable, Net, Current	$ 3,169	$ 5,133
Revenue, Net	$ 11,929	$ 16,042
Number of Suppliers	2	3

The number of suppliers accounted for total purchases.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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