Note 5 - Environmental and Reclamation Activities (Tables)

12 Months Ended

Dec. 31, 2024

Environmental and Reclamation Activities [Abstract]

Schedule of Reclamation and Closure Costs Liabilities

The liabilities accrued for our reclamation and closure costs at December 31, 2024 and 2023 were as follows (in thousands):

	2024			2023
Operating properties:
Greens Creek	$	38,737		$	39,893
Lucky Friday		10,982			12,022
Keno Hill		3,500			3,360
Casa Berardi		17,005			11,157
Non-operating properties:
Nevada		33,700			30,539
San Sebastian		1,509			2,061
Troy mine		3,385			5,238
Johnny M		10,148			10,148
All other sites		5,944			6,039
Total		124,910			120,457
Reclamation and closure costs, current		(13,748	)		(9,660	)
Reclamation and closure costs, non-current	$	111,162		$	110,797

Schedule of Reclamation and Closure Costs Activities

The activity in our accrued reclamation and closure cost liability for the years ended December 31, 2024, 2023 and 2022 was as follows (in thousands):

Balance at January 1, 2022	$	113,231
Accruals for estimated costs		2,874
Accretion expense		5,995
Revision of estimated cash flows due to changes in reclamation plans		452
Payment of reclamation obligations		(5,553	)
Balance at December 31, 2022		116,999
Accruals for estimated costs		2,952
Accretion expense		7,740
Revision of estimated cash flows due to changes in reclamation plans		(29	)
Payment of reclamation obligations		(7,205	)
Balance at December 31, 2023		120,457
Accruals for estimated costs		(239	)
Accretion expense		5,806
Revision of estimated cash flows due to changes in reclamation plans		7,383
Payment of reclamation obligations		(8,497	)
Balance at December 31, 2024	$	124,910

Schedule of Change in Asset Retirement Obligation

	2024			2023
Balance January 1	$	99,067		$	96,620
Changes in obligations due to changes in reclamation plans		5,226			(29	)
Accretion expense		5,806			7,740
Payment of asset retirement obligations		(4,667	)		(5,264	)
Balance at December 31	$	105,432		$	99,067