INVENTORIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Inventory [Line Items]
Inventories, net	$ 60,572	$ 52,987
LIFO reserve	22,139	24,541
Total inventory on a FIFO basis	27,800	33,100
Total inventory on a LIFO basis	5,700	8,600
United States
Inventory [Line Items]
LIFO reserve	22,100	24,500
Cost of Sales
Inventory [Line Items]
LIFO reserve effect on income	$ 2,400	$ (1,300)