Note 4 - Business Segments, Sales of Products and Significant Customers (Tables)

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Schedule of Information About Reportable Segments

The tables below present information about our reportable segments as of and for the years ended December 31, 2023, 2022 and 2021 (in thousands).

	2023			2022			2021
Net sales to unaffiliated customers:
Greens Creek	$	384,504		$	335,062		$	384,843
Lucky Friday		116,284			147,814			131,488
Keno Hill		35,518			—			—
Casa Berardi		177,678			235,136			245,152
Nevada Operations		960			419			45,814
Other		5,283			474			176
Total sales to unaffiliated customers	$	720,227		$	718,905		$	807,473
Income (loss) from operations:
Greens Creek	$	113,551		$	87,297		$	164,666
Lucky Friday		4,811			27,636			31,683
Keno Hill		(35,344	)		(4,249	)		—
Casa Berardi		(56,683	)		(21,799	)		5,807
Nevada Operations		(23,724	)		(38,134	)		(46,115	)
Other		(47,285	)		(63,189	)		(72,621	)
Total (loss) income from operations	$	(44,674	)	$	(12,438	)	$	83,420
Capital additions (excluding non-cash items):
Greens Creek	$	43,542		$	36,898		$	23,883
Lucky Friday		65,337			50,992			29,885
Keno Hill		44,672			19,725			—
Casa Berardi		70,056			39,667			49,617
Nevada Operations		218			333			5,470
Other		62			1,763			193
Total capital additions	$	223,887		$	149,378		$	109,048

Depreciation, depletion and amortization:
Greens Creek	$	53,995		$	48,911			48,710
Lucky Friday		24,325			33,704			26,846
Keno Hill		4,277			—			—
Casa Berardi		66,037			60,962			80,744
Nevada Operations		140			361			15,341
Other		—			—			152
Total depreciation, depletion and amortization	$	148,774		$	143,938		$	171,793
Other significant non-cash items:
Greens Creek	$	11,098		$	2,821		$	3,653
Lucky Friday		(916	)		1,138			1,048
Keno Hill		376			1,669			—
Casa Berardi		13,378			1,520			1,284
Nevada Operations		2,086			4,384			7,740
Other		16,908			(816	)		(20,030	)
Total other significant non-cash items	$	42,930		$	10,716		$	(6,305	)
Identifiable assets:
Greens Creek	$	569,369		$	582,687		$	589,944
Lucky Friday		578,110			571,510			516,545
Keno Hill		362,986			276,096			—
Casa Berardi		683,035			681,631			701,868
Nevada Operations		460,967			466,722			468,985
Other		356,637			348,526			451,466
Total identifiable assets	$	3,011,104		$	2,927,172		$	2,728,808

Schedule of Long-lived Assets by Geographic Area

The following are our long-lived assets by geographic area as of December 31, 2023 and 2022 (in thousands):

	2023		2022
United States	$	1,698,285	$	1,670,676
Canada		960,109		891,375
Mexico		7,856		7,739
Total long-lived assets	$	2,666,250	$	2,569,790

Schedule of Sales Contributed by Each Segment

Sales of metal concentrates and metal products are made principally to custom smelters, third-party processors and metal traders. The percentage of metal sales contributed by each segment is reflected in the following table:

	Year Ended December 31,
	2023			2022			2021
Greens Creek		53.7	%		46.6	%		47.6	%
Lucky Friday		16.3	%		20.6	%		16.3	%
Keno Hill		5.0	%		—			0.0	%
Casa Berardi		24.9	%		32.7	%		30.4	%
Nevada Operations		0.1	%		0.1	%		5.7	%
Other		—			—			—
		100	%		100	%		100	%

Schedule of Sales of Products by Metal

Total sales for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands):

	Year Ended December 31,
	2023			2022			2021
Silver	$	302,284		$	265,054		$	293,646
Gold		274,613			298,910			362,037
Lead		72,726			83,384			75,431
Zinc		116,230			123,057			125,292
Less: Smelter and refining charges		(50,909	)		(51,973	)		(48,933	)
Total metal sales		714,944			718,432			807,473
Environmental remediation services		5,283			473			—
Total sales	$	720,227		$	718,905		$	807,473

Schedule of Sales Information by Geographic Area

The following is metal sales information by geographic area based on the location of smelters and metal traders (for concentrate shipments) and the location of parent companies (for doré sales to metal traders) for the years ended December 31, 2023, 2022 and 2021 (in thousands):

	2023		2022		2021
United States	$	36,307	$	21,938	$	71,278
Canada		375,092		406,600		419,090
Japan		52,744		51,375		63,588
Korea		127,590		107,828		203,115
China		103,534		136,514		50,945
Total, excluding gains/losses on forward contracts	$	695,267	$	724,255	$	808,016

Metal sales by significant product type for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands):

	Year Ended December 31,
	2023		2022		2021
Doré and metals from doré	$	211,321	$	255,608	$	313,337
Carbon		4,333		2,607		4,117
Silver concentrate		356,941		329,165		345,732
Zinc concentrate		80,274		109,177		112,448
Precious metals concentrate		42,398		27,698		32,382
Total, excluding gains/losses on forward contracts	$	695,267	$	724,255	$	808,016

Schedule of Sales from Continuing Operations to Significant Metals Customers

Metal sales from continuing operations to significant metals customers as a percentage of total sales were as follows for the years ended December 31, 2023, 2022 and 2021:

	Year Ended December 31,
	2023			2022			2021
Customer A		24.2	%		35.4	%		37.2	%
Customer B		11.8	%		23.9	%		21.5	%
Customer C		15.5	%		11.3	%		21.6	%
Customer D		15.8	%		3.5	%		6.2	%

Summary of Trade Accounts Receivable

Trade accounts receivable balances with significant metals customers as of December 31, 2023 and 2022 were as follows.

	2023			2022
Customer B		22.2	%		57.5	%
Customer D		34.8	%		—
Customer E		24.2	%		3.2	%
Customer F		—			15.9	%
Customer G		—			11.8	%