v3.26.3
Investment in debt securities (Tables)
 6 Months Ended
Jun. 30, 2026
Investment in Debt Securities [Abstract]  
Held to Maturity Investment in Debt Securities
The maturity schedule of the outstanding investments in debt securities that are classified as held-to-maturity as of June 30, 2026, is as follows:

 Maturity date    Carrying amount      Fair value      Unrealized gains  
Due within 1 year
    $
2,003,103
      $
2,006,970
      $
3,867
  
Due in 1-5 years
    
750,000
      
765,000
      
15,000
  
Due in 5-10 years
    
—
      
—
      
—
  
Total
    $
2,753,103
      $
2,771,970
      $
18,867
  
Carrying Amount and Unrealized Gains of Trading Debt Securities
The following table presents the carrying amount and unrealized gains of trading debt securities as of June 30, 2026:

Balance June 30, 2026
  
Carrying amount
    
Unrealized Gains
  
Trading debt securities
  
$
558,752
    
$
3,829
  
Total
  
$
558,752
    
$
3,829