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Revenue (Details - Revenues by product line) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]    
Revenues $ 71,477 $ 59,878
Iot [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 59,167 49,911
R E M [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 11,843 9,228
Other Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Revenues $ 467 $ 739