STOCK PLANS AND STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Jun. 30, 2018

Share Based Compensation Allocation And Classification In Financial Statements [Abstract]

Components of Stock-Based Compensation Expense and Related Tax Benefits

A summary of the components of stock-based compensation expense recognized during the years ended June 30, 2018, 2017, and 2016, together with the income tax benefits realized, is as follows (in thousands):

	Year ended June 30,
	2018		2017		2016
Stock-based compensation included in indirect costs and    selling expense:
Restricted stock and RSU expense	$	23,628	$	21,945	$	17,919
Income tax benefit recognized for stock-based compensation	$	7,769	$	7,498	$	6,476

Annual Performance-Based Awards Granted

The annual performance-based awards granted for each of the fiscal years presented were as follows:

	Performance-based stock awards granted		Number of additional shares earned under performance-based stock awards
Fiscal year 2018		185,056		—
Fiscal year 2017		193,420		21,824
Fiscal year 2016		208,160		48,068

Summary of Activity Related to Restricted Stock and RSUs

Changes in the number of unvested restricted stock and RSUs during each of the years in the three-year period ended June 30, 2018, 2017, and 2016, together with the corresponding weighted-average fair values, are as follows:

	Restricted Stock and Restricted Stock Units
	Number of Shares			Weighted Average Grant Date Fair Value
Unvested at June 30, 2015		864,566		$	64.79
Granted		275,117			80.72
Vested		(209,448	)		49.48
Forfeited		(56,381	)		75.79
Unvested at June 30, 2016		873,854		$	64.79
Granted		256,853			104.45
Vested		(233,296	)		65.07
Forfeited		(62,804	)		93.12
Unvested at June 30, 2017		834,607		$	71.20
Granted		276,871			146.27
Vested		(394,293	)		66.29
Forfeited		(53,198	)		95.03
Unvested at June 30, 2018		663,987		$	107.96

Summary of Activity Related to SSARs and Stock Options

Activity for all outstanding SSARs and stock options, and the corresponding exercise price and fair value information, for the year ended June 30, 2016, is as follows: 

	Number of Shares			Exercise Price		Weighted Average Exercise Price		Weighted Average Grant Date Fair Value
Outstanding, June 30, 2015		42,660		37.67 – 49.36			48.29		17.45
Exercisable, June 30, 2015		42,660		37.67 – 49.36			48.29	$	17.45
Exercised		(35,860	)	37.67 – 49.36			48.18		17.25
Forfeited		—			—		—		—
Expired		(6,800	)		48.83		48.83		18.50
Outstanding, June 30, 2016		—			—		—		—
Exercisable, June 30, 2016		—			—	$	—	$	—

Note:  2017 and 2018 have no outstanding SSARs or stock options.

Additional Information Related to SSARs and Stock Options

Information regarding the cash proceeds received, and the intrinsic value and total tax benefits realized resulting from SSARs and stock option exercises is as follows (in thousands):

	Year ended June 30,
	2018		2017		2016
Cash proceeds received	$	—	$	—	$	0
Intrinsic value realized	$	—	$	—	$	1,286
Income tax benefit realized	$	—	$	—	$	465

Summary of Activity Related to MSPP

Activity related to the MSPP during the year ended June 30, 2018 is as follows:

	MSPP
RSUs outstanding, June 30, 2017		3,167
Granted		1,622
Issued		(463	)
Forfeited		(388	)
RSUs outstanding, June 30, 2018		3,938
Weighted average grant date fair value as adjusted for the    applicable discount	$	117.13