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INVESTMENTS (Details) - Investments Classified by Contractual Maturity Date $ in Thousands	Sep. 30, 2021 USD ($)
Investments Classified by Contractual Maturity Date [Abstract]
Net Carrying Amount, Convertible debentures	$ 8,770
Net Carrying Amount, Due after five years through ten years	1,000
Fair Value, Convertible debentures	15,852
Fair Value, Due after five years through ten years	$ 1,002

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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