Intangible Assets Including Goodwill - Carrying Value of Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 42,664		$ 42,594
Accumulated Amortization	(20,657)		(19,780)
Net Carrying Amount	22,007		22,814
Total intangible assets, net carrying amount	22,007		22,814
Amortization expense	800	$ 1,600
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,579		2,579
Accumulated Amortization	(1,647)		(1,603)
Net Carrying Amount	$ 932		976
Intellectual Property [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	9 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	$ 38,632		38,562
Accumulated Amortization	(17,590)		(16,763)
Net Carrying Amount	$ 21,042		21,799
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
Accumulated Amortization	$ (1,420)		(1,414)
Net Carrying Amount	$ 33		$ 39
Noncompete Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		4 years