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SUPPLEMENTAL FINANCIAL INFORMATION
 6 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Financial Information SUPPLEMENTAL FINANCIAL INFORMATION
The components of other income are as follows:
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
Unrealized gain (loss) on marketable securities$1 $445 $(851)$985 
Realized gain on maturities of marketable securities262 649 450 861 
Foreign exchange gain (loss)(93)349 (1,516)(353)
Interest income, net and other1,336 1,180 1,932 2,747 
Other income $1,506 $2,623 $15 $4,240 

The components of accounts payable and accrued liabilities are as follows:
June 30, 2025December 31, 2024
Mine closure redundancy$2,967 $9,169 
Accounts payable4,913 7,508 
Accrued operating expenses5,844 6,507 
Accrued payroll liabilities4,093 6,558 
Accrued capital expenditures3,413 — 
Accrued taxes929 1,673 
Deferred revenue— 813 
Total accounts payable and accrued liabilities$22,159 $32,228