SEGMENT INFORMATION - Long-lived Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Long-lived assets	$ 401,455	$ 404,787
United States
Segment Reporting Information [Line Items]
Long-lived assets	153,569	148,950
United Kingdom
Segment Reporting Information [Line Items]
Long-lived assets	144,279	142,973
All Other
Segment Reporting Information [Line Items]
Long-lived assets	$ 103,607	$ 112,864