Note 5 - Environmental and Reclamation Activities (Tables)

12 Months Ended

Dec. 31, 2025

Environmental and Reclamation Activities [Abstract]

Schedule of Reclamation and Closure Costs Liabilities

The liabilities accrued for our reclamation and closure costs at December 31, 2025 and 2024 were as follows (in thousands):

	2025			2024
Operating properties:
Greens Creek	$	51,634		$	38,737
Lucky Friday		14,914			10,982
Keno Hill		3,733			3,500
Casa Berardi		75,986			17,005
Non-operating properties:
Nevada		35,885			33,700
Troy mine		3,007			3,385
Johnny M		9,703			10,148
All other sites		7,404			7,453
Total		202,266			124,910
Reclamation and closure costs, current		(13,795	)		(13,748	)
Reclamation and closure costs, non-current	$	188,471		$	111,162

Schedule of Reclamation and Closure Costs Activities

The activity in our accrued reclamation and closure cost liability for the years ended December 31, 2025, 2024 and 2023 was as follows (in thousands):

Balance at January 1, 2023		116,999
Accruals for estimated costs and revisions due to changes in reclamation plans		2,923
Accretion expense		7,740
Payment of reclamation obligations		(7,205	)
Balance at December 31, 2023		120,457
Accruals for estimated costs and revisions due to changes in reclamation plans		7,144
Accretion expense		5,806
Payment of reclamation obligations		(8,497	)
Balance at December 31, 2024		124,910
Accruals for estimated costs and revisions due to changes in reclamation plans		75,449
Accretion expense		7,331
Payment of reclamation obligations		(5,424	)
Balance at December 31, 2025	$	202,266

Schedule of Change in Asset Retirement Obligation

	2025			2024
Balance January 1	$	105,432		$	99,067
Changes in obligations due to changes in reclamation plans		71,504			5,226
Accretion expense		7,331			5,806
Payment of asset retirement obligations		(662	)		(4,667	)
Balance at December 31	$	183,605		$	105,432