Note 2 - Business Segments and Sales of Products (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Net sales to unaffiliated customers:
Greens Creek	$	113,763		$	84,890		$	212,172		$	138,724
Lucky Friday		39,645			11,455			68,767			14,285
Casa Berardi		56,122			50,005			129,033			96,177
San Sebastian		3			4,934			176			14,860
Nevada Operations		8,450			15,071			18,687			39,234
	$	217,983		$	166,355		$	428,835		$	303,280
Income (loss) from operations:
Greens Creek	$	56,433		$	26,707		$	101,033		$	30,823
Lucky Friday		11,737			(5,218	)		18,060			(13,338	)
Casa Berardi		(3,200	)		3,204			5,917			(676	)
San Sebastian		(961	)		(859	)		(3,224	)		(180	)
Nevada Operations		(20,341	)		(1,545	)		(23,481	)		1,344
Other		(17,206	)		(11,738	)		(33,394	)		(22,486	)
	$	26,462		$	10,551		$	64,911		$	(4,513	)

	June 30, 2021		December 31, 2020
Identifiable assets:
Greens Creek	$	601,521	$	610,360
Lucky Friday		513,189		520,463
Casa Berardi		679,182		694,522
San Sebastian		40,190		42,617
Nevada Operations		499,583		513,309
Other		337,573		286,453
	$	2,671,238	$	2,667,724

Revenue from External Customers by Products and Services [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Silver	$	92,765		$	61,756		$	170,525		$	99,328
Gold		86,078			89,212			187,487			179,906
Lead		22,223			12,454			38,116			18,874
Zinc		30,037			21,455			59,228			38,762
Less: Smelter and refining charges		(13,120	)		(18,522	)		(26,521	)		(33,590	)
	$	217,983		$	166,355		$	428,835		$	303,280