Note 8 - Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2022

Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]

As of September 30, 2022 and December 31, 2021, we recorded the following balances for the fair value of the contracts (in millions):


	September 30,		December 31,
Balance sheet line item:	2022		2021
Current derivatives assets	$	0.3	$	2.7
Non-current derivatives assets		0.3		2.5
Current derivatives liabilities		5.8		—
Non-current derivatives liabilities		5.6		—

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

The following tables summarize the quantities of metals committed under forward sales contracts at September 30, 2022 and December 31, 2021:


September 30, 2022	Ounces/pounds under contract (in 000’s)								Average price per ounce/pound
	Silver		Gold		Zinc		Lead		Silver		Gold		Zinc		Lead
	(ounces)		(ounces)		(pounds)		(pounds)		(ounces)		(ounces)		(pounds)		(pounds)
Contracts on provisional sales
2022 settlements		2,235		1,840		18,739		14,991	$	19.54	$	1,760	$	1.30	$	0.96
Contracts on forecasted sales
2022 settlements		2,235		1,840		8,763		1,984		N/A		N/A	$	1.32	$	0.97
2023 settlements		—		—		71,209		75,618		N/A		N/A	$	1.30	$	1.00
2024 settlements		—		—		78,760		31,526		N/A		N/A	$	1.34	$	1.00
2025 settlements		—		—		2,480		—		N/A		N/A	$	1.33		N/A


December 31, 2021	Ounces/pounds under contract (in 000’s)								Average price per ounce/pound
	Silver		Gold		Zinc		Lead		Silver		Gold		Zinc		Lead
	(ounces)		(ounces)		(pounds)		(pounds)		(ounces)		(ounces)		(pounds)		(pounds)
Contracts on provisional sales
2022 settlements		1,814		6		13,371		4,575	$	23.02	$	1,812	$	1.39	$	0.96
Contracts on forecasted sales
2022 settlements		—		—		57,706		59,194		N/A		N/A	$	1.28	$	0.98
2023 settlements		—		—		76,280		71,650		N/A		N/A	$	1.29	$	1.00

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]

We recorded the following balances for the fair value of the forward contracts as of September 30, 2022 and forward and put option contracts as of December 31, 2021 (in millions):


	September 30, 2022						December 31, 2021
Balance sheet line item:	Contracts in an asset position		Contracts in a liability position		Net asset (liability)		Contracts in an asset position		Contracts in a liability position			Net asset (liability)
Current derivatives assets	$	6.9	$	—	$	6.9	$	—	$	—		$	—
Non-current derivatives assets	$	20.5	$	—		20.5	$	—	$	—		$	—
Current derivatives liabilities		—		—		—		0.7		(20.1	)		(19.4	)
Non-current derivatives liabilities		—		—		—		0.4		(18.9	)		(18.5	)