DEBT (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jan. 04, 2021	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Long-term debt disclosure
Principal		$ 200,000	$ 200,000		$ 200,000		$ 305,000
Debt Issuance Costs		(4,017)	(4,017)		(4,017)		(4,561)
Total debt		195,983	195,983		195,983		300,439
Repayment of debt					105,000	$ 85,000
Credit Facility
Long-term debt disclosure
Principal		200,000	200,000		200,000		305,000
Debt Issuance Costs		(4,017)	(4,017)		(4,017)		(4,561)
Total debt		195,983	195,983		195,983		$ 300,439
Outstanding amount under credit facility	$ 150,000	200,000	200,000		200,000
Available under the revolving credit facility	850,000	$ 800,000	$ 800,000		$ 800,000
Effective interest rate (as percent)		1.33%	1.33%		1.33%
Interest expense recognized			$ 1,000	$ 1,600	$ 2,200	$ 3,800
Repayment of debt	$ 50,000
LIBOR | Credit Facility
Long-term debt disclosure
Basis spread on interest rate (as a percent)		1.10%