EMPLOYEE BENEFIT PLANS - Net Periodic Post-retirement Benefit Cost (Details) - Post-retirement benefit plan - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net periodic post-retirement benefit cost
Service cost	$ 36	$ 44
Interest cost	$ 55	$ 52
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Labor and Related Expense	Labor and Related Expense
Recognized actuarial loss		$ 13
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Immediate Recognition of Actuarial Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Labor and Related Expense	Labor and Related Expense
Net periodic pension cost	$ 91	$ 109
Amounts recognized in accumulated other comprehensive (gain) loss, before tax effect
Net actuarial loss	$ (250)	$ 181
Discount rate	4.62%	2.91%