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3. Revenue (Details - Changes in Deferred Revenue) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Revenue from Contract with Customer [Abstract]    
Deferred revenue, beginning balance $ 486  
New performance obligations 392  
Performance obligations assumed from acquisitions 738  
Recognition of revenue as a result of satisying performance obligations (792)  
Deferred revenue, ending balance 824  
Less: non-current portion of deferred revenue (166) $ (158)
Current portion ending balance $ 658 $ 328