STOCK PLANS AND STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Jun. 30, 2017

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, 2017, 2016, and 2015, together with the income tax benefits realized, is as follows (in thousands):

	Year ended June 30,
	2017		2016		2015
Stock-based compensation included in indirect costs and    selling expense:
Restricted stock and RSU expense	$	21,945	$	17,919	$	14,072
Income tax benefit recognized for stock-based compensation    expense	$	7,498	$	6,476	$	5,260

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 years ended June 30, 2017, 2016, and 2015, is as follows:

	Number of Shares			Exercise Price		Weighted Average Exercise Price		Weighted Average Grant Date Fair Value
Outstanding, June 30, 2014		91,950		37.67 – 59.30			48.77		17.02
Exercisable, June 30, 2014		91,950		37.67 – 59.30			48.77		17.02
Exercised		(44,290	)	37.67 – 59.30			49.36		17.33
Forfeited		—			—		—		—
Expired		(5,000	)		47.59		47.59		10.68
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		—			—	$	—	$	—
Exercised		—			—		—		—
Forfeited		—			—		—		—
Expired		—			—		—		—
Outstanding, June 30, 2017		—			—		—		—
Exercisable, June 30, 2017		—			—	$	—	$	—

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, 2017, 2016, and 2015, 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, 2014		838,242		$	55.39
Granted		322,121			76.37
Vested		(250,613	)		47.84
Forfeited		(45,184	)		66.89
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		$	71.20
Granted		256,853			104.45
Vested		(233,296	)		65.07
Forfeited		(62,804	)		93.12
Unvested at June 30, 2017		834,607		$	85.28

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,
	2017		2016		2015
Cash proceeds received	$	—	$	—	$	872
Intrinsic value realized	$	—	$	1,286	$	1,646
Income tax benefit realized	$	—	$	465	$	615

Summary of Activity Related to MSPP

Activity related to the MSPP during the year ended June 30, 2017 is as follows:

	MSPP
RSUs outstanding, June 30, 2016		1,393
Granted		1,978
Issued		(204	)
Forfeited		—
RSUs outstanding, June 30, 2017		3,167
Weighted average grant date fair value as adjusted for the    applicable discount	$	81.02