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OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 6 Months Ended
Mar. 31, 2023
Other Comprehensive Income (Loss) [Abstract]  
Schedule of components of other comprehensive income (loss) and the related income tax effects
   Three Months Ended March 31,
   2023  2022
      Tax  Net of     Tax  Net of
   Before Tax  (Benefit)  Tax  Before Tax  (Benefit)  Tax
   Amount  Expense  Amount  Amount  Expense  Amount
   (In thousands)
Unrealized holding gain (loss) arising during period on:                              
Available-for-sale investments  $177   $(44)  $133   $(742)  $183   $(559)
Other comprehensive income (loss), net  $177   $(44)  $133   $(742)  $183   $(559)

 

   Six Months Ended March 31,
   2023  2022
      Tax  Net of     Tax  Net of
   Before Tax  (Benefit)  Tax  Before Tax  (Benefit)  Tax
   Amount  Expense  Amount  Amount  Expense  Amount
   (In thousands)
Unrealized holding gain (loss) arising during period on:                              
Available-for-sale investments  $384   $(95)  $289   $(795)  $196   $(599)
Other comprehensive income (loss), net  $384   $(95)  $289   $(795)  $196   $(599)