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Contingencies (Tables)
 9 Months Ended
Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Contingencies Reserve Balance For the quarter and nine months ended September 30, 2025 the following undiscounted activity was recorded in connection with the New Idria Mercury Mine:

 

 

 

For the Quarter Ended September 30,

 

 

For the Nine Months Ended September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Beginning reserve balance

 

$

11,241

 

 

$

12,492

 

 

$

12,425

 

 

$

13,182

 

Changes in estimated environmental liability

 

 

900

 

 

 

200

 

 

 

900

 

 

 

1,000

 

Payments made

 

 

(718

)

 

 

(908

)

 

 

(1,902

)

 

 

(2,398

)

Ending reserve balance (1)

 

$

11,423

 

 

$

11,784

 

 

$

11,423

 

 

$

11,784

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Beginning receivable balance

 

$

7,050

 

 

$

7,114

 

 

$

8,404

 

 

$

7,245

 

Changes in estimated insurance recovery

 

 

900

 

 

 

700

 

 

 

900

 

 

 

1,700

 

Insurance recovery reimbursements

 

 

(483

)

 

 

(621

)

 

 

(1,837

)

 

 

(1,752

)

Ending receivable balance (2)

 

$

7,467

 

 

$

7,193

 

 

$

7,467

 

 

$

7,193

 

(1) As of September 30, 2025, Buckhorn has a total ending reserve balance of $11.4 million related to the New Idria Mine, of which $7.4 million is classified in Other current liabilities and $4.0 million in Other liabilities (long-term).

(2) As of September 30, 2025, Buckhorn has a total receivable balance related to the probable insurance recovery of $7.5 million, of which $4.2 million is classified in Other accounts receivable and $3.3 million is classified in Other assets (long-term).