LEASES - Lease balance sheet (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2021 USD ($)
LEASES
Right-of-use assets - current	$ 801
Operating Lease, Right-of-Use Asset, Current, Statement of Financial Position [Extensible List]	Prepaid Expense and Other Assets, Current
Right-of-use assets - non-current	$ 6,009
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent
Total right-of-use assets	$ 6,810
Lease liabilities - current	$ 957
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current
Lease liabilities - non-current	$ 7,197
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent
Total operating lease liabilities	$ 8,154