Income Taxes (Schedule of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]
Benefit of net operating losses	$ 8,582	$ 7,149	$ 6,617
Tax credit carry-forwards	5,006	4,928	4,866
Other, principally reserves	3,251	2,774	2,381
Deferred tax asset	16,839	14,851	13,864
Valuation allowance	(3,104)	(3,103)	(3,224)
Total deferred tax assets	13,735	11,748	10,640
Deferred tax liabilities - basis difference and amortization	(1,798)
Net deferred tax asset	$ 11,937	$ 11,748	$ 10,640