Stock-Based Compensation (Tables)

3 Months Ended

Sep. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock-based compensation expense recognized

	Three Months Ended September 30,
	2014		2013
Stock-based compensation included in indirect costs and selling expenses:
Restricted stock unit (RSU) expense	$	2,620	$	2,443
Non-qualified stock option and stock settled stock appreciation right (SSAR) expense		—		41
Total stock-based compensation expense	$	2,620	$	2,484
Income tax benefit recognized for stock-based compensation expense	$	1,016	$	949

Schedule of activity related to SSARs/non-qualified stock options and RSUs

	SSARs/ Non-qualified Stock Options		RSUs
Outstanding, June 30, 2014		91,950		838,242
Granted		—		283,003
Exercised/Issued		—		(213,294	)
Forfeited/Lapsed		—		(10,780	)
Outstanding, September 30, 2014		91,950		897,171
Weighted average grant date fair value for RSUs			$	78.39