Note 4 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Property and equipment, gross	$ 8,306	$ 8,007
Less: Accumulated depreciation and amortization	(6,705)	(6,440)
Total	1,601	1,567
Land and Building [Member]
Property and equipment, gross	1,250	1,250
Leasehold Improvements [Member]
Property and equipment, gross	1,268	1,210
Machinery and Equipment [Member]
Property and equipment, gross	5,777	5,536
Transportation Equipment [Member]
Property and equipment, gross	$ 11	$ 11

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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