v3.25.3
Investment securities (Tables)
9 Months Ended
Sep. 30, 2025
Investment securities  
Schedule of investments in government debt securities

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

At September 30, 2025

​

    

Amortized cost

    

Gross unrealized holding gains

    

Gross unrealized holding losses

    

Estimated fair value

​

​

(in thousands)

Current investments:

​

​

​

​

​

​

​

​

​

​

​

​

Government debt securities (held-to-maturity)

​

$

97,189

​

$

51

​

$

—

​

$

97,240

Total

​

$

97,189

​

$

51

​

$

—

​

$

97,240

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

At December 31, 2024

​

    

Amortized cost

    

Gross unrealized holding gains

    

Gross unrealized holding losses

    

Estimated fair value

​

​

(in thousands)

Current investments:

​

​

​

​

​

​

​

​

​

​

​

​

Government debt securities (held-to-maturity)

​

$

208,591

​

$

164

​

$

—

​

$

208,755

Total

​

$

208,591

​

$

164

​

$

—

​

$

208,755