​

  ​ ​ ​

Three months ended March 31, 

In thousands of U.S. Dollars

​

2026

  ​ ​ ​

2025

Balance at beginning of period

​

$

15,222

​

$

—

Deposits

​

—

​

18,759

Costs incurred - expense

​

(1,202)

​

(4)

Balance at end of period

​

$

14,020

​

$

18,755

​

​

​

​

​

​

​

Current portion

​

$

14,020

​

$

18,755

Non-current portion

​

—

​

—

Balance at end of period

​

$

14,020

​

$

18,755