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Goodwill And Intangible Assets, Net (Carrying Value And Accumulated Amortization Of Intangible Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Jun. 30, 2021
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross carrying value $ 15,045 $ 16,760
Accumulated amortization (14,757) (16,403)
Total future estimated amortization expense 288 357
Total intangible assets, Net carrying value 288 357
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross carrying value 9,282 10,340
Accumulated amortization (9,282) (10,340)
Total future estimated amortization expense 0 0
Software And Unpatented Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross carrying value 1,549 1,726
Accumulated amortization (1,549) (1,726)
Total future estimated amortization expense 0 0
FTS Patent [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross carrying value 2,405 2,679
Accumulated amortization (2,405) (2,679)
Total future estimated amortization expense 0 0
Trademarks And Brands [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross carrying value 1,809 2,015
Accumulated amortization (1,521) (1,658)
Total future estimated amortization expense $ 288 $ 357