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Intangible Assets Including Goodwill - Carrying Value of Other Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 42,557   $ 42,604
Accumulated Amortization (24,041)   (23,132)
Net Carrying Amount 18,516   19,472
Total intangible assets, net carrying amount 18,516   19,472
Amortization expense 900 $ 800  
Intellectual Property [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 2,579   2,579
Accumulated Amortization (1,823)   (1,779)
Net Carrying Amount $ 756   800
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 $ 38,525   38,572
Accumulated Amortization (20,773)   (19,915)
Net Carrying Amount $ 17,752   18,657
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  
Noncompete Agreements [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 1,453   1,453
Finite-Lived Intangible Asset, Useful Life 4 years 4 years  
Accumulated Amortization $ (1,445)   (1,438)
Net Carrying Amount $ 8   $ 15