Coal Workers' Pneumoconiosis and Workers' Compensation (Tables)

12 Months Ended

Dec. 31, 2023

The reconciliation of changes in the benefit obligation, plan assets and funded status of these plans at December 31, 2023 and 2022 is as follows:


	Pension Benefits at December 31,				Other Postretirement Benefits at December 31,
	2023		2022		2023		2022
Change in benefit obligation:
Benefit obligation at beginning of period	$	524,212	$	723,006	$	255,029	$	353,297
Service cost	1,217		1,207		—		—
Interest cost	27,027		16,539		13,044		7,898
Actuarial loss (gain)	14,061		(173,233)		(20,776)		(84,810)
Benefits and other payments	(41,431)		(43,307)		(20,062)		(21,356)
Benefit obligation at end of period	$	525,086	$	524,212	$	227,235	$	255,029

Change in plan assets:
Fair value of plan assets at beginning of period	$	540,225	$	733,966	$	—	$	—
Actual return on plan assets	49,239		(151,968)		—		—
Company contributions	1,538		1,534		20,062		21,356
Benefits and other payments	(41,431)		(43,307)		(20,062)		(21,356)
Fair value of plan assets at end of period	$	549,571	$	540,225	$	—	$	—

Funded status:
Noncurrent assets	$	47,246	$	38,548	$	—	$	—
Current liabilities	(1,953)		(1,950)		(19,327)		(22,436)
Noncurrent liabilities	(20,808)		(20,585)		(207,908)		(232,593)
Net asset (obligation) recognized	$	24,485	$	16,013	$	(227,235)	$	(255,029)

Amounts recognized in accumulated other comprehensive (loss) income consist of:
Net actuarial loss (gain)	$	248,252	$	244,700	$	(26,249)	$	(5,473)
Prior service credit	—		—		(11,329)		(13,734)
Net amount recognized (before tax effect)	$	248,252	$	244,700	$	(37,578)	$	(19,207)

The reconciliation of changes in the benefit obligation and funded status of these plans at December 31, 2023 and 2022 is as follows:


	CWP at December 31,				Workers' Compensation at December 31,
	2023		2022		2023		2022
Change in benefit obligation:
Benefit obligation at beginning of period	$	161,113	$	215,871	$	50,344	$	67,261
State administrative fees and insurance bond premiums	—		—		1,953		1,817
Service cost	2,313		2,905		5,597		4,920
Interest cost	8,285		5,060		2,514		1,369
Actuarial loss (gain)	13,270		(46,498)		(2,919)		(14,422)
Benefits paid	(14,967)		(16,225)		(9,336)		(10,601)
Benefit obligation at end of period	$	170,014	$	161,113	$	48,153	$	50,344

Funded status:
Current assets	$	—	$	—	$	1,010	$	1,058
Current liabilities	(15,071)		(12,723)		(10,019)		(10,451)
Noncurrent liabilities	(154,943)		(148,390)		(39,144)		(40,951)
Net obligation recognized	$	(170,014)	$	(161,113)	$	(48,153)	$	(50,344)

Amounts recognized in accumulated other comprehensive (loss) income consist of:
Net actuarial loss (gain)	$	4,217	$	(10,098)	$	(25,597)	$	(24,727)
Net amount recognized (before tax effect)	$	4,217	$	(10,098)	$	(25,597)	$	(24,727)

The components of net periodic benefit (credit) cost are as follows:


	Pension Benefits						Other Postretirement Benefits
	For the Years Ended December 31,						For the Years Ended December 31,
	2023		2022		2021		2023		2022		2021
Components of net periodic benefit (credit) cost:
Service cost	$	1,217	$	1,207	$	1,114	$	—	$	—	$	—
Interest cost	27,027		16,539		14,230		13,044		7,898		7,274
Expected return on plan assets	(39,470)		(37,276)		(42,168)		—		—		—
Amortization of prior service credits	—		—		—		(2,405)		(2,405)		(2,405)
Recognized net actuarial loss	741		3,037		5,469		—		3,515		6,516
Settlement loss recognized	—		—		22		—		—		—
Net periodic benefit (credit) cost	$	(10,485)	$	(16,493)	$	(21,333)	$	10,639	$	9,008	$	11,385

The components of net periodic benefit cost are as follows:


	CWP For the Years Ended December 31,						Workers’ Compensation For the Years Ended December 31,
	2023		2022		2021		2023		2022		2021
Service cost	$	2,313	$	2,905	$	4,460	$	5,597	$	4,920	$	4,236
Interest cost	8,285		5,060		4,710		2,514		1,369		1,127
Recognized net actuarial (gain) loss	(1,045)		4,238		8,364		(2,049)		(420)		(179)
State administrative fees and insurance bond premiums	—		—		—		1,953		1,817		1,778
Net periodic benefit cost	$	9,553	$	12,203	$	17,534	$	8,015	$	7,686	$	6,962

The weighted-average discount rates used to determine benefit obligations and net periodic benefit costs are as follows:


	CWP For the Years Ended December 31,						Workers’ Compensation For the Years Ended December 31,
	2023		2022		2021		2023		2022		2021
Benefit obligations	5.14	%	5.40	%	2.85	%	5.12	%	5.38	%	2.74	%
Net periodic benefit costs	5.40	%	2.85	%	2.53	%	5.38	%	2.74	%	2.35	%


	For the Years Ended December 31,
	2023			2022			2021
Net periodic benefit costs	$	534		$	546		$	1,075
Discount rate assumption used to determine net periodic benefit costs	5.34		%	2.39		%	1.86		%

The following benefit payments are expected to be paid in accordance with plan documents:


	Pension Benefits		Other Postretirement Benefits
2024	$	40,937	$	19,327
2025	$	39,700	$	19,207
2026	$	41,409	$	18,969
2027	$	39,060	$	18,490
2028	$	38,717	$	18,168
Year 2029-2033	$	184,782	$	85,644

The following benefit payments, which reflect expected future claims as appropriate, are expected to be paid: