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3. Revenue (Details - Changes in Deferred Revenue) - USD ($)
$ in Thousands
9 Months Ended
Mar. 31, 2020
Jun. 30, 2019
Movement in deferred revenue    
Deferred revenue, beginning balance $ 486  
New performance obligations 238  
Performance obligations assumed from acquisition 738  
Recognition of revenue as a result of satisying performance obligations (579)  
Deferred revenue, ending balance 883  
Less: non-current portion of deferred revenue (158) $ (158)
Current portion ending balance $ 725 $ 328