Note 3 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net sales	$ 718,905	$ 807,473	$ 691,873
Income (loss) from operations	12,438	83,420	66,978
Capital additions (excluding non-cash items)	149,378	109,048	91,016
Depreciation, depletion and amortization	143,938	171,793	148,110
Other significant non-cash items	10,716	(6,305)	12,851
Identifiable assets	2,927,172	2,728,808	2,700,210
Greens Creek [Member]
Segment Reporting Information [Line Items]
Net sales	335,062	384,843	327,820
Income (loss) from operations	87,297	164,666	114,607
Capital additions (excluding non-cash items)	36,898	23,883	19,685
Depreciation, depletion and amortization	48,911	48,710	49,692
Other significant non-cash items	2,821	3,653	3,103
Identifiable assets	582,687	589,944	610,360
Lucky Friday [Member]
Segment Reporting Information [Line Items]
Net sales	147,814	131,488	63,025
Income (loss) from operations	(27,636)	31,683	(1,711)
Capital additions (excluding non-cash items)	50,992	29,885	25,776
Depreciation, depletion and amortization	33,704	26,846	11,473
Other significant non-cash items	1,138	1,048	881
Identifiable assets	571,510	516,545	520,463
Keno Hill [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0
Income (loss) from operations	(4,249)	0	0
Capital additions (excluding non-cash items)	19,725	0	0
Depreciation, depletion and amortization	0	0	0
Other significant non-cash items	1,669	0	0
Identifiable assets	276,096	0	0
Casa Berardi [Member]
Segment Reporting Information [Line Items]
Net sales	235,136	245,152	209,224
Income (loss) from operations	(21,799)	5,807	10,379
Capital additions (excluding non-cash items)	39,667	49,617	40,840
Depreciation, depletion and amortization	60,962	80,744	60,552
Other significant non-cash items	1,520	1,284	(1,741)
Identifiable assets	681,631	701,868	727,008
Nevada Operations [Member]
Segment Reporting Information [Line Items]
Net sales	419	45,814	58,898
Income (loss) from operations	(38,134)	(46,115)	(6,674)
Capital additions (excluding non-cash items)	333	5,470	4,003
Depreciation, depletion and amortization	361	15,341	22,845
Other significant non-cash items	4,384	7,740	2,039
Identifiable assets	466,722	468,985	513,309
Other Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,763	193	712
Income (loss) from operations	(63,189)	(72,621)	(49,623)
Capital additions (excluding non-cash items)	474	176	32,906
Depreciation, depletion and amortization		152	3,548
Other significant non-cash items	(816)	(20,030)	8,569
Identifiable assets	$ 348,526	$ 451,466	$ 329,070