Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 31, 2011
Loss Contingencies [Line Items]
Accrued liability estimates the range of reasonably possible losses, low	$ 1.5
Accrued liability estimates the range of reasonably possible losses, high	3.5
Defense Contract Management Agency [Member]
Loss Contingencies [Line Items]
Potential outcome minimum	0
Potential outcome maximum	$ 2.9