Commitments And Contingencies (Narrative) (Details)	1 Months Ended		3 Months Ended				12 Months Ended			48 Months Ended
	Jan. 31, 2018 USD ($)	Jul. 31, 2017 USD ($) item	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CAD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 EUR (€)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2015 EUR (€)
Loss Contingencies [Line Items]
Rental expenses							$ 884,000	$ 943,000	$ 1,097,000
Damages paid										$ 810,000	€ 677,000
Preliminary tax assessment			$ 923,000	$ 1,218,000
Employment And Withholding Concerns [Member]
Loss Contingencies [Line Items]
Accrual related to settlement													$ 582,000	€ 486,000
Increase in settlement expense					$ 272,000	€ 227,000
3CEMS [Member] | Loss on Purchase Commitment [Member] | Out-of-Court Settlement [Member]
Loss Contingencies [Line Items]
Accrual related to settlement		$ 1,000,000
Number of payments | item		4
Installment amount		$ 250,000
Payment period		10 months
Trade Secrets Case [Member]
Loss Contingencies [Line Items]
Accrual related to settlement												$ 675,000
Judgment awarded	$ 675,000
Minimum [Member] | Employment And Withholding Concerns [Member]
Loss Contingencies [Line Items]
Potential financial liability | €														486,000
Minimum [Member] | 3CEMS [Member] | Loss on Purchase Commitment [Member]
Loss Contingencies [Line Items]
Damages sought							$ 4,000,000
Maximum [Member] | Employment And Withholding Concerns [Member]
Loss Contingencies [Line Items]
Potential financial liability | €														€ 1,000,000