Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)	Jun. 30, 2012	Jun. 30, 2011
Income Taxes [Abstract]
U.S. and foreign net operating loss carryforwards	$ 50,808,000	$ 51,036,000
Book and tax basis differences for property and equipment	27,000
Bad debt, warranty and inventory reserves	861,000	963,000
Accrued compensation	1,049,000	1,168,000
Deferred revenue	1,211,000	1,450,000
U.S. Federal tax credits	347,000	343,000
Stock compensation	459,000	513,000
Other	1,086,000	1,083,000
Deferred tax assets	55,848,000	56,556,000
Valuation allowance	(54,340,000)	(54,792,000)
Total deferred tax assets	1,508,000	1,764,000
Acquired intangibles	575,000	903,000
Book and tax basis differences for property and equipment		15,000
Total deferred tax liabilities	575,000	918,000
Deferred income taxes, net	$ 933,000	$ 846,000