Note 10 - Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2025

Table Text Block [Abstract]

Schedule of Foreign Exchange Contracts, Statement of Financial Position

As of December 31, 2025 and 2024, we recorded the following balances for the fair value of the contracts (in millions):

	December 31,
Balance sheet line item:	2025			2024
Other current assets	$	1.1		$	—
Other non-current assets		—			—
Current derivative liabilities		(0.8	)		(8.2	)
Non-current derivative liabilities		—			(2.0	)

Schedule of Notional Amounts of Outstanding Derivative Positions

The following tables summarize the quantities of metals committed under forward sales contracts at December 31, 2025 and 2024:

December 31, 2025	Pounds under contract (in 000's)				Average price per pound
	Zinc		Lead		Zinc		Lead
	(pounds)		(pounds)		(pounds)		(pounds)
Contracts on provisional sales
2025 settlements		18,850		13,117	$	1.37	$	1.05
Contracts on forecasted sales
2025 settlements		53,407		42,108	$	1.33	$	1.02
2026 settlements		23,810		—	$	1.36	N/A

December 31, 2024	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
2024 settlements		1,535		2		20,834		14,661	$	31.46	$	2,673	$	1.40	$	0.97
Contracts on forecasted sales
2024 settlements		—		—		59,194		47,840	N/A		N/A		$	1.39	$	0.99
2025 settlements		—		—		6,283		52,911	N/A		N/A		$	1.41	$	1.03

The following tables summarize the quantities of metals hedged under Collars at December 31, 2025:

Settlement Period	Production Protected		Average strike price per silver ounce		Average strike price per gold ounce
	Silver (ounces)	Gold (ounces)	Minimum ($)	Maximum ($)	Minimum ($)	Maximum ($)
Contracts on provisional sales
2026 settlements	2,120	—	49.78	63.43	N/A	N/A
Contracts on forecasted sales
2026 settlements	800	4	34.29	55.70	3,000	4,840

The following table summarizes the quantities of metals for which we have entered into put contracts and the average exercise prices as of December 31, 2025:

Settlement Period	Production Protected	Strike price per ounce
	Silver (ounces)	($)
Contracts on forecasted sales
2026 settlements	9,672	50.00

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location

At December 31, 2025 and 2024, we recorded the following balances for the fair value of derivative contracts held at that time (in millions):

	December 31, 2025								December 31, 2024
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)
Other current assets	$	8.6	$	—		$	8.6		$	11.5	$	—	$	11.5
Other non-current assets		7.2		—			7.2			6.6		—		6.6
Current derivatives liability		—		(36.4	)		(36.4	)		—		—		—
Other non-current liability		—		(1.9	)		(1.9	)		—		—		—