Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Jun. 30, 2013 segment	Jun. 30, 2012
Percent of total revenue subject to subsequent government audit of direct and indirect costs	94.40%
Material adjustment for audits not completed on revenue recognition	Management does not anticipate any material adjustment to the consolidated financial statements in subsequent periods for audits not yet started or completed.
Number of reporting units	2
Percentage goodwill attributable to domestic operations	95.00%
Common stock, shares authorized	80,000,000	80,000,000
Accumulated other comprehensive loss related to foreign currency translation adjustments	$ 8,100,000	$ 5,500,000
Accumulated other comprehensive loss related to fair value of interest rate swaps	1,100,000	1,300,000
Accumulated other comprehensive loss related to unrecognized post-retirement medical plan costs	700,000	1,000,000
Convertible senior subordinated notes outstanding	$ 300,000,000	$ 300,000,000
Convertible senior subordinated notes, stated interest rate	2.125%
Warrants [Member]
Exercise price of shares issued under warrants	68.31
Common stock, shares authorized	5,500,000
Maximum [Member]
Estimated useful life	8 years
Minimum [Member]
Estimated useful life	3 years