Concentration Of Risk (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
International Sales [Member]
Segment Reporting Information [Line Items]
Revenue from a single customer	$ 30,093,000	$ 26,806,000	$ 20,773,000
Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Total sales, percentage	50.00%	40.00%	34.00%
Government Contracts Concentration Risk [Member]
Segment Reporting Information [Line Items]
Revenue from a single customer	$ 8,060,000	$ 11,878,000	$ 13,639,000
Government Contracts Concentration Risk [Member] | Sales Revenue, Segment [Member]
Segment Reporting Information [Line Items]
Total sales, percentage	13.00%	18.00%	23.00%