Note 3 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales Information by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales by significant product type	$ 724,255	$ 808,016	$ 708,253
Doré and Metals from Doré [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	255,608	313,337	266,536
Carbon [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	2,607	4,117	60,302
Silver Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	329,165	345,732	281,050
Zinc Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	109,177	112,448	76,481
Precious Metals Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	27,698	32,382	23,884
UNITED STATES
Segment Reporting Information [Line Items]
Sales by significant product type	21,938	71,278	115,378
CANADA
Segment Reporting Information [Line Items]
Sales by significant product type	406,600	419,090	321,896
JAPAN
Segment Reporting Information [Line Items]
Sales by significant product type	51,375	63,588	39,418
NETHERLANDS
Segment Reporting Information [Line Items]
Sales by significant product type	0	0	(923)
KOREA
Segment Reporting Information [Line Items]
Sales by significant product type	107,828	203,115	166,402
CHINA
Segment Reporting Information [Line Items]
Sales by significant product type	$ 136,514	$ 50,945	$ 66,082