LEASES - Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Assets
Operating leases	$ 3,049	$ 5,603
Liabilities
Operating lease liabilities, current	$ 1,166	$ 1,075
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating lease liabilities, non-current	$ 3,645	$ 4,749
Total lease liabilities	$ 4,811	$ 5,824