Contingencies (Tables)

6 Months Ended

Jun. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

Schedule of Contingencies Reserve Balance

For the quarter and six months ended June 30, 2025 the following undiscounted activity was recorded in connection with the New Idria Mercury Mine:


	For the Quarter Ended June 30,						For the Six Months Ended June 30,
	2025			2024			2025			2024
Beginning reserve balance	$	11,719		$	12,315		$	12,425		$	13,182
Changes in estimated environmental liability		—			800			—			800
Payments made		(478	)		(623	)		(1,184	)		(1,490	)
Ending reserve balance (1)	$	11,241		$	12,492		$	11,241		$	12,492

Beginning receivable balance	$	7,487		$	7,020		$	8,404		$	7,245
Changes in estimated insurance recovery		—			700			—			1,000
Insurance recovery reimbursements		(437	)		(606	)		(1,354	)		(1,131	)
Ending receivable balance (2)	$	7,050		$	7,114		$	7,050		$	7,114

(1) As of June 30, 2025, Buckhorn has a total ending reserve balance of $11.2 million related to the New Idria Mine, of which $6.4 million is classified in Other current liabilities and $4.8 million in Other liabilities (long-term).

(2) As of June 30, 2025, Buckhorn has a total receivable balance related to the probable insurance recovery of $7.0 million, of which $2.8 million is classified in Other accounts receivable and $4.2 million is classified in Other assets (long-term).