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SUPPLEMENTAL FINANCIAL INFORMATION
 9 Months Ended
Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Financial Information SUPPLEMENTAL FINANCIAL INFORMATION
The components of other income (loss) are as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Unrealized gain (loss) on marketable securities$7,506 $(2,330)$6,655 $(1,346)
Realized gain (loss) on maturities of marketable securities(95)843 355 1,704 
Foreign exchange gain (loss)(264)22 (1,780)(331)
Interest income, net and other1,119 1,291 3,051 4,039 
Other income (loss)$8,266 $(174)$8,281 $4,066 

The components of accounts payable and accrued liabilities are as follows:
September 30, 2025December 31, 2024
Accounts payable$4,975 $7,508 
Accrued operating expenses6,193 6,507 
Accrued payroll liabilities5,635 6,558 
Accrued capital expenditures2,378 — 
Accrued taxes1,133 1,673 
Mine closure redundancy— 9,169 
Deferred revenue— 813 
Total accounts payable and accrued liabilities$20,314 $32,228