Note 6 - Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2023

Defined Benefit Plan [Abstract]

Schedule of changes in the plans' benefit obligations and fair value of assets

The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets over the two-year period ended December 31, 2023, and the funded status as of December 31, 2023 and 2022 (in thousands):

	Pension Benefits
	2023			2022
Change in benefit obligation:
Benefit obligation at beginning of year	$	148,143		$	195,862
Service cost		3,794			6,262
Interest cost		7,974			5,476
Change due to mortality change		643			486
Change due to discount rate change		(3,635	)		(54,977	)
Actuarial return		401			1,841
Benefits paid		(7,894	)		(6,807	)
Benefit obligation at end of year		149,426			148,143
Change in fair value of plan assets:
Fair value of plan assets at beginning of year		175,159			189,874
Actual return on plan assets		7,937			(18,238	)
Employer contributions		1,756			10,330
Benefits paid		(7,894	)		(6,807	)
Fair value of plan assets at end of year		176,958			175,159
Funded status at end of year	$	27,532		$	27,016

Schedule of the amounts recognized in the consolidated balance sheets

The following table provides the amounts recognized in the consolidated balance sheets as of December 31, 2023 and 2022 (in thousands):

	Pension Benefits
	2023			2022
Non-current assets:
Accrued benefit asset	$	28,399		$	27,806
Current pension liability
Accrued benefit liability		(867	)		(790	)
Accumulated other comprehensive loss		8,031			6,446
Net amount recognized	$	35,563		$	33,462

Schedule of assumptions related to benefit obligation and prepaid benefit costs

The benefit obligation and prepaid benefit costs were calculated by applying the following weighted average assumptions:

	Pension Benefits
	2023				2022
Discount rate: net periodic pension cost		5.77	%			5.54	%
Discount rate: projected benefit obligation		5.77	%			5.54	%
Expected rate of return on plan assets		7.25	%			7.25	%
Rate of compensation increase: net periodic pension cost	5%/2%			(1)	5%/2%
Rate of compensation increase: projected benefit obligation	4%/3%/2%			(2)	5%/2%

Schedule of net periodic pension cost

Net periodic pension cost for the plans consisted of the following in 2023, 2022, and 2021 (in thousands):

	Pension Benefits
	2023			2022			2021
Service cost	$	3,794		$	6,262		$	5,820
Interest cost		7,974			5,476			4,990
Expected return on plan assets		(12,428	)		(13,452	)		(9,252	)
Amortization of prior service cost		500			511			394
Amortization of net (loss) gain		(188	)		2,049			4,502
Net periodic pension (benefit) cost	$	(348	)	$	846		$	6,454

Schedule of allocation of assets

	Target			Maximum
Large cap U.S. equities		17	%		20	%
Small cap U.S. equities		8	%		10	%
Non-U.S. equities		25	%		30	%
U.S. Fixed income		18	%		23	%
Emerging markets debt		5	%		8	%
Real estate		15	%		18	%
Absolute return		5	%		7	%
Company stock/Real return		7	%		13	%

Schedule of fair values of plan by asset category

The fair values by asset category in each pension plan, along with their hierarchy levels, are as follows as of December 31, 2023 (in thousands):

	Hecla plans								Lucky Friday
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Investments measured at fair value
Interest-bearing cash	$	525	$	—	$	—	$	525	$	117	$	—	$	—	$	117
Common stock		19,933		—		—		19,933		2,872		—		—		2,872
Mutual funds		83,504		—		—		83,504		12,792		—		—		12,792
Total investments in the fair value hierarchy		103,962		—		—		103,962		15,781		—		—		15,781
Investments measured at net asset value
Real estate funds		—		—		—		18,029		—		—		—		4,173
Common collective funds		—		—		—		28,386		—		—		—		6,627
Total investments measured at net asset value		—		—		—		46,415		—		—		—		10,800
Total fair value	$	103,962	$	—	$	—	$	150,377	$	15,781	$	—	$	—	$	26,581

	Hecla plans								Lucky Friday
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Investments measured at fair value
Interest-bearing cash	$	743	$	—	$	—	$	743	$	133	$	—	$	—	$	133
Common stock		21,678		—		—		21,678		3,295		—		—		3,295
Mutual funds		75,868		—		—		75,868		11,905		—		—		11,905
Total investments in the fair value hierarchy		98,289		—		—		98,289		15,333		—		—		15,333
Investments measured at net asset value
Real estate funds		—		—		—		23,967		—		—		—		5,550
Hedge funds		—		—		—		—		—		—		—		—
Common collective funds		—		—		—		26,114		—		—		—		5,906
Total investments measured at net asset value		—		—		—		50,081		—		—		—		11,456
Total fair value	$	98,289	$	—	$	—	$	148,370	$	15,333	$	—	$	—	$	26,789

Schedule of estimates of future benefit payments

The following are estimates of future benefit payments, which reflect expected future service as appropriate, related to our pension plans (in thousands):

Year Ending December 31,	Pension Plans
2024	$	8,886
2025		10,031
2026		10,005
2027		9,981
2028		10,321
Years 2029-2033		51,163

Schedule of indication of whether pension plans had accumulated benefit obligations (ABO) in excess of plan assets, or plan assets exceeded ABO

The following table indicates whether our pension plans had accumulated benefit obligations (“ABO”) in excess of plan assets, or plan assets exceeded ABO (amounts are in thousands).

	2023		2022
	Plan Assets Exceed ABO		Plan Assets Exceed ABO
Projected benefit obligation	$	149,426	$	148,143
Accumulated benefit obligation		146,336		144,816
Fair value of plan assets		176,958		175,159

Schedule of amounts included in "Accumulated other comprehensive loss, net"

For the pension plans, the following amounts are included in “Accumulated other comprehensive income, net” on our balance sheet as of December 31, 2023, that have not yet been recognized as components of net periodic benefit cost (in thousands):

	Pension Benefits
Unamortized net loss	$	7,462
Unamortized prior service cost		579