OTHER ASSETS - Schedule (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Other Assets, Noncurrent Disclosure [Abstract]
Deposits and restricted cash	$ 10,556	$ 11,612
Capitalized costs to obtain a contract	45,088	43,029
Investments	81,618	76,002
Long-term prepaid expenses and other long-term assets	23,880	23,824
Total	$ 161,142	$ 154,467