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STOCK PLANS AND STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109197908&loc=SL79508275-113901 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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