Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Gains (losses) on foreign currency transactions	$ (116,000)	$ 129,000	$ (185,000)
Number of days in delivery period following sale of system	90 days
Analysis period to determine estimated selling price	12 months
Antidilutive securities excluded from earnings per share	502,000	901,000	904,000
Total compensation costs	1,010,000
Short term investments liquidated and returned to cash	7,600,000
Bank line of credit, average amount outstanding	$ 0
Minimum [Member]
Maintenance period for systems	1 year
Short term investments in commercial and corporate boned maturity	90 days
Estimated useful lives, years	one
Maximum [Member]
Maintenance period for systems	2 years
Cash balances and short-term investments maturity	90 days
Short term investments in commercial and corporate boned maturity	1 year
Estimated useful lives, years	seven