LEASES - Lease Costs and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 15,542	$ 16,147
Short-term lease cost	263	98
Variable lease cost	693	743
Sublease income	(1,617)	(1,554)
Total lease cost	$ 14,881	15,434
Weighted-average remaining lease term	6 years 1 month 2 days		6 years 2 months 4 days
Weighted-average discount rate	3.10%		3.12%
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of operating lease liabilities	$ 19,088	17,609
Right of use assets obtained in exchange for new operating lease liabilities	$ 2,297	$ 4,860