OTHER INTANGIBLE ASSETS - Other intangible assets net of amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Gross other intangible assets	$ 20,527	$ 20,507
Less: Accumulated amortization	17,261	17,075
Other intangible assets-net	3,266	3,432
Software and Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross other intangible assets	7,005	7,005
Patents and copyrights
Finite-Lived Intangible Assets [Line Items]
Gross other intangible assets	5,472	5,452
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross other intangible assets	4,150	4,150
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross other intangible assets	$ 3,900	$ 3,900