STOCK PLANS AND STOCK-BASED COMPENSATION - Summary of Activity Related to Restricted Stock and RSUs (Detail 1) - Restricted Stock Units - $ / shares	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Number of Shares
Unvested restricted stock and RSUs Outstanding June 30	663,987	834,607	873,854
Granted	274,261	276,871	256,853
Vested	(276,626)	(394,293)	(233,296)
Forfeited	(32,816)	(53,198)	(62,804)
Unvested restricted stock and RSUs Outstanding June 30	628,806	663,987	834,607
Weighted Average Grant Date Fair Value
Beginning balance unvested, June 30	$ 107.96	$ 71.20	$ 64.79
Granted	201.27	146.27	104.45
Vested	61.85	66.29	65.07
Forfeited	123.55	95.03	93.12
Ending balance unvested, June 30	$ 134.10	$ 107.96	$ 71.20

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Name Accounting Standards Codification
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 2
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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