Concentration Of Risk (Summary Of Purchases By Significant Vendor) (Details) (Cost of Goods, Total [Member])	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Vendor A [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	28.00%
Vendor B [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		20.00%	19.00%
Maximum [Member] | Vendor A [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		10.00%	10.00%
Maximum [Member] | Vendor B [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	10.00%
Maximum [Member] | Vendor C [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	10.00%	21.00%	20.00%