INVESTMENTS (Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity) (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Amortized Cost
One year or less	$ 24,729
Over one through five years	93,795
Over five through ten years	123,677
Over ten years	101,418
Amortized Cost	343,619
Fair Value
One year or less	25,274
Over one through five years	96,141
Over five through ten years	124,403
Over ten years	103,481
Fair Value	$ 349,299

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