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Short-Term Investments (Tables)
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of amortized costs, gross unrealized gains and losses, and fair values of investments

December 31, 2025

Gross

Gross

(in thousands)

Amortized Cost

  ​ ​ ​

Unrealized Gains

  ​ ​ ​

Unrealized Losses

  ​ ​ ​

Fair Value

Short-term U.S. treasury securities

$

169,046

$

183

$

$

169,229

Total

$

169,046

$

183

$

$

169,229

December 31, 2024

Gross

Gross

(in thousands)

Amortized Cost

  ​ ​ ​

Unrealized Gains

  ​ ​ ​

Unrealized Losses

  ​ ​ ​

Fair Value

Short-term U.S. treasury securities

$

132,615

$

167

$

$

132,782

Total

$

132,615

$

167

$

$

132,782