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Supplemental Financial Information (Details - Purchased intangible assets) - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 14,486 $ 14,486
Accumulated Amortization (5,131) (2,037)
Net Book Value 9,355 12,449
Developed Technology Rights [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 3,841 3,841
Accumulated Amortization (1,249) (497)
Net Book Value 2,592 3,344
Customer Contracts [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 9,030 9,030
Accumulated Amortization (2,267) (726)
Net Book Value 6,763 8,304
Order or Production Backlog [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 840 840
Accumulated Amortization (840) (384)
Net Book Value 0 456
Noncompete Agreements [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 400 400
Accumulated Amortization (400) (184)
Net Book Value 0 216
Trademarks [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 375 375
Accumulated Amortization (375) (246)
Net Book Value $ 0 $ 129