SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Summary Of Significant Accounting Policies [Line Items]
U.S. Government Contracts as a percent of total revenue	93.50%	93.70%
Amount of tax expense for changes in the fair value of interest rate swap agreements	$ 3.9
Accumulated other comprehensive loss related to foreign currency translation adjustments	(26.7)	$ (6.7)
Accumulated other comprehensive loss related to fair value of interest rate swaps	(13.1)	(7.1)
Accumulated other comprehensive loss related to unrecognized post-retirement medical plan costs	$ (1.3)	$ (1.2)
Equipment and furniture
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	from three to eight years
Leasehold improvements
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	over the remaining lease term or the useful life of the improvements, whichever is shorter