Quarterly report [Sections 13 or 15(d)]

Note 4 - Investments (Tables)

v3.26.1
Note 4 - Investments (Tables)
 6 Months Ended
Mar. 31, 2026
Notes Tables  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
   

March 31, 2026

  

(In thousands)

  

Cost

    

Unrealized

Gains

    

Unrealized Losses

    

Fair Value

  

Short-Term

                                

U.S. treasury securities

  

$

 81,381    

$

 66    

$

 (28

)

  

$

 81,419  

Certificates of deposit

     248       -       (2 )     246  

Investment securities – short-term

  

$

 81,629    

$

 66    

$

 (30

)

  

$

 81,665  

Long-Term

                                

U.S. treasury securities

  

$

 56,224    

$

 -    

$

 (220

)

   $ 56,004  

Investment securities – long-term

  

$

 56,224    

$

 -    

$

 (220

)

   $ 56,004  
   

September 30, 2025

  

(In thousands)

  

Cost

    

Unrealized

Gains

    

Unrealized Losses

    

Fair Value

  

Short-Term

                                

U.S. treasury securities

  

$

 84,192    

$

 119    

$

 (70

)

  

$

 84,241  

Certificates of deposit

     248       -       (5 )     243  

Investment securities – short-term

  

$

 84,440    

$

 119    

$

 (75

)

  

$

 84,484  

Long-Term

                                

U.S. treasury securities

  

$

 59,794    

$

 62    

$

 (34

)

  

$

 59,822  

Investment securities – long-term

  

$

 59,794    

$

 62    

$

 (34

)

  

$

 59,822  
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
   

In Unrealized Loss Position For Less Than 12 Months

    

In Unrealized Loss Position For Greater Than 12 Months

  

(In thousands)

  

Fair Value

    

Gross Unrealized Losses

    

Fair Value

    

Gross Unrealized Losses

  

U.S. Treasury securities

  

$

 76,044    

$

 (238

)

   $ 2,788     $ (10 )

Certificates of deposit

     -       -       246       (2

)

Investment securities

  

$

 76,044    

$

 (238

)

   $ 3,034     $ (12 )
   

In Unrealized Loss Position For Less Than 12 Months

    

In Unrealized Loss Position For Greater Than 12 Months

  

(In thousands)

  

Fair Value

    

Gross Unrealized Losses

    

Fair Value

    

Gross Unrealized Losses

  

U.S. Treasury securities

   $ 40,330     $ (36 )   $ 24,380     $ (68 )

Certificates of deposit

     -       -       243       (5 )

Investment securities

   $ 40,330     $ (36 )   $ 24,623     $ (73 )