LEASES - Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Assets:
Operating lease right-of-use assets	$ 3,240	$ 3,049
Liabilities:
Operating lease liabilities, accrued expenses	$ 1,430	$ 1,166
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current	Accrued Liabilities, Current
Operating lease liabilities, non-current	$ 3,535	$ 3,645
Total lease liabilities	$ 4,965	$ 4,811