Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended
	Sep. 30, 2012
Summary Of Significant Accounting Policies [Line Items]
Number of days in delivery period following sale of system	90 days
Analysis period to determine estimated selling price	12 months
Bank line of credit, average amount outstanding	$ 0
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Maintenance period for systems	1 year
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Maintenance period for systems	2 years