Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Line Items]
Tax credit carry-forwards	$ 5,006,000	$ 4,928,000	$ 4,866,000
Undistributed Earnings of Foreign Subsidiaries	20,700,000
Tax Credit Carryforward, Amount	4,800,000
Operating Loss Carryforward Related To Exercise Of Employee Stock	8,800,000
Increase (decrease) in valuation allowance		(121,000)	$ 467,000
Unrecognized Tax Benefits	1,315,000	1,268,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1,300,000	$ 1,300,000
Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards	$ 24,300,000
Minimum [Member]
Income Taxes [Line Items]
Expiration Dates For Tax Credit Carryforward	2018
Minimum [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2022
Open Tax Year	2012
Minimum [Member] | German Tax Authority [Member]
Income Taxes [Line Items]
Open Tax Year	2011
Maximum [Member]
Income Taxes [Line Items]
Expiration Dates For Tax Credit Carryforward	2034
Maximum [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2035
Open Tax Year	2015
Maximum [Member] | German Tax Authority [Member]
Income Taxes [Line Items]
Open Tax Year	2015