INCOME TAXES - Schedule Of Deferred Tax Assets And Liabilities (Details 3) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Deferred tax assets:
Deferred compensation and post-retirement obligations	$ 35,724	$ 34,963
Reserves and accruals	39,903	25,498
Stock-based compensation	9,833	7,242
Interest rate swap	8,505	4,616
Deferred rent	5,765	4,886
Other	8,353	11,760
Total deferred tax assets	108,083	88,965
Deferred tax liabilities:
Goodwill and other intangible assets	(320,811)	(258,498)
Unbilled revenue	(18,740)	(15,652)
Prepaid expenses	(8,308)	(5,452)
Other	(8,682)	(9,600)
Total deferred tax liabilities	(356,541)	(289,202)
Net deferred tax liability	$ (248,458)	$ (200,237)