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Stock-Based Compensation (Tables)

6 Months Ended

Dec. 31, 2018

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								Six Months Ended
		December 31,								December 31,
		2018				2017				2018				2017
Stock-based compensation related to RSUs included in    indirect costs and selling expense		$	6,349			$	6,038			$	12,047			$	12,389
Income tax benefit recognized for stock-based    compensation expense		$	1,657			$	1,985			$	2,373			$	4,074

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 2019			101,976				—
Fiscal year 2018			185,056				20,116
Fiscal year 2017			193,420				73,065

Summary of Activity Related to RSUs

Activity related to RSUs during the six months ended December 31, 2018 is as follows:

		RSUs
Unvested at June 30, 2018			663,987
Granted			241,542
Vested			(251,857	)
Forfeited			(24,637	)
Unvested at December 31, 2018			629,035
Weighted-average grant date fair value for RSUs		$	205.74

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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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Tabular disclosure of the changes in outstanding nonvested performance-based units.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
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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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