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OTHER INTANGIBLE ASSETS - Other intangible assets net of amortization (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Jun. 30, 2023
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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

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