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Acquisition (Details) - AGI - USD ($)
3 Months Ended
Jul. 02, 2019
Sep. 30, 2019
Purchased intangible assets    
Purchase price $ 10,800,000  
Number of shares held in escrow account 114,943  
Period in which shares held in escrow account 18 months  
Service revenue from the date of acquisition   $ 1,700,000
Segment income   $ 54,000
Maximum measurement period 1 year