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Stock-Based Compensation (Tables)

3 Months Ended

Sep. 30, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense and Related Tax Benefits Recognized

Stock-based compensation expense recognized, together with the income tax benefits recognized, is as follows (in thousands):

		Three Months Ended
		September 30,
		2017				2016
Stock-based compensation related to RSUs included in    indirect costs and selling expense		$	6,351			$	4,897
Income tax benefit recognized for stock-based compensation expense		$	1,587			$	1,757

Summary of Activity Related to RSUs

Activity related to RSUs during the three months ended September 30, 2017 is as follows:

		RSUs
Unvested at June 30, 2017			834,607
Granted			217,865
Vested			(248,671	)
Forfeited			(12,561	)
Unvested at September 30, 2017			791,240
Weighted-average grant date fair value for RSUs		$	151.33

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- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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