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OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Components of Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2022
Mar. 31, 2021
Other comprehensive income            
Available-for-sale investments before tax $ (742)   $ (318)   $ (795) $ (369)
Tax benefit (expense) 183   96   196 111
Available-for-sale investments after tax (559)   (222)   (599) (258)
Other comprehensive income, net before tax (742)   (318)   (795) (369)
Tax benefit (expense), Total 183   96   196 111
Other comprehensive income, net after tax $ (559) $ (40) $ (222) $ (36) $ (599) $ (258)