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3. Warranty Reserve (Details - Warranty reserve) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2017
Jun. 30, 2016
Product Warranties Disclosures [Abstract]    
Beginning balance $ 138 $ 163
Charged to cost of revenue 34 91
Usage (56) (116)
Ending balance $ 116 $ 138