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STOCK BASED COMPENSATION - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares, stock incentive plans (in shares)	10,574,283		10,574,283
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised	$ 1,900,000	$ 1,700,000	$ 3,200,000	$ 5,500,000
Unrecognized compensation costs	0		0
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of RSUs vested	1,100,000	$ 600,000	2,000,000.0	$ 1,900,000
Intrinsic value of RSUs outstanding	14,000,000.0		14,000,000.0
Unrecognized compensation costs, RSUs	$ 6,300,000		$ 6,300,000
Weighted-average period recognized (in years)			3 years 8 months 12 days

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Aggregate number of common shares reserved for future issuance.

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Unrecognized cost of unvested options awarded to employees as compensation.

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