Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues		$ 1,024,075	$ 1,330,780	$ 1,337,435
Costs and expenses:
Cost of goods sold		899,578	806,822	715,846
Selling, general and administrative expenses		75,730	76,506	73,432
CatchMark merger-related expenses		2,453	27,325	0
Environmental charge		0	5,550	0
Gain on fire damage		(39,436)	(34,505)	(3,361)
Total costs and expenses		938,325	881,698	785,917
Operating income		85,750	449,082	551,518
Interest expense, net	[1]	(24,218)	(27,400)	(29,275)
Pension settlement charge		0	(14,165)	0
Non-operating pension and other postretirement employee benefit costs		(914)	(8,138)	(13,227)
Other		1,267	(67)	0
Income before income taxes		61,885	399,312	509,016
Income taxes		216	(65,412)	(85,156)
Net income		$ 62,101	$ 333,900	$ 423,860
Net income per share:
Basic		$ 0.78	$ 4.59	$ 6.29
Diluted		0.77	4.58	6.26
Dividends per share		$ 1.8	$ 2.72	$ 5.67
Weighted-average shares outstanding (in thousands)
Basic		79,985	72,740	67,352
Diluted		80,167	72,922	67,719

[1] Includes amortization of bond discounts and deferred loan fees.