FAIR VALUE OF FINANCIAL INSTRUMENTS - cash, cash equivalents and short-term investments (Details) $ in Thousands	3 Months Ended
Sep. 30, 2023 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	$ 52,025
Investment Gains	416
Fair Value	52,441
Cash and Cash Equivalents	42,517
Short Term Investments	9,924
U.S. Treasury Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	39,446
Investment Gains	416
Fair Value	39,862
Cash and Cash Equivalents	29,938
Short Term Investments	9,924
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost	12,579
Fair Value	12,579
Cash and Cash Equivalents	$ 12,579

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of realized and unrealized gain (loss) on investment.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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