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Intangible Assets Including Goodwill - Carrying Value of Other Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross $ 19,783   $ 19,783   $ 24,419
Accumulated Amortization (12,602)   (12,602)   (15,582)
Net Carrying Amount 7,181   7,181   8,837
Total intangible assets, net carrying amount 7,181   7,181   8,837
Amortization of Intangible Assets 600 $ 800 1,700 $ 2,700  
Intellectual Property [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 2,483   2,483   2,579
Accumulated Amortization (1,989)   (1,989)   (1,956)
Net Carrying Amount 494   $ 494   623
Intellectual Property [Member] | Minimum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Asset, Useful Life     10 years 10 years  
Intellectual Property [Member] | Maximum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Asset, Useful Life     15 years 15 years  
Customer Relationships [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 17,300   $ 17,300   21,840
Accumulated Amortization (10,613)   (10,613)   (13,626)
Net Carrying Amount $ 6,687   $ 6,687   $ 8,214
Customer Relationships [Member] | Minimum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Asset, Useful Life     6 years 6 years  
Customer Relationships [Member] | Maximum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Asset, Useful Life     15 years 15 years