EMPLOYEE BENEFIT PLANS - Net Periodic Post-retirement Benefit Cost (Details) - Post-retirement benefit plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Net periodic post-retirement benefit cost
Service cost	$ 5	$ 6	$ 11	$ 18
Interest cost	$ 16	$ 12	$ 34	$ 27
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	Labor and Related Expense	Labor and Related Expense
Amortization of net actuarial gain	$ (5)		$ (8)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Labor and Related Expense	Labor and Related Expense	Labor and Related Expense	Labor and Related Expense
Net periodic pension cost	$ 16	$ 18	$ 37	$ 45