EARNINGS (LOSS) PER SHARE - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 66,109	$ 25,634	$ (53,427)
Net income (loss) from discontinued operations, net of tax	11,255	(106,041)	(129,887)
Net income (loss)	$ 77,364	$ (80,407)	$ (183,314)
Denominator:
Basic weighted average shares outstanding (shares)	100,235	103,618	104,076
Effect of dilutive stock options, unvested restricted stock and unvested restricted share units (shares)	1,087	319	0
Diluted weighted average shares outstanding (shares)	101,322	103,937	104,076
Basic net income (loss) per common share:
Basic net income (loss) per common share from continuing operations (USD per share)	$ 0.66	$ 0.25	$ (0.51)
Basic net income (loss) per common share from discontinued operations (USD per share)	0.11	(1.02)	(1.25)
Basic net income (loss) per common share (USD per share)	0.77	(0.77)	(1.76)
Diluted net income (loss) per common share:
Diluted net income (loss) per common share from continuing operations (USD per share)	0.65	0.25	(0.51)
Diluted net income (loss) per common share from discontinued operations (USD per share)	0.11	(1.02)	(1.25)
Diluted net income (loss) per common share (USD per share)	$ 0.76	$ (0.77)	$ (1.76)