Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues	$ 1,062,076	$ 1,024,075	$ 1,330,780
Costs and expenses:
Cost of goods sold	945,672	899,578	806,822
Selling, general and administrative expenses	83,212	75,730	76,506
CatchMark merger-related expenses	0	2,453	27,325
Environmental charge	0	0	5,550
Gain on fire damage	0	(39,436)	(34,505)
Total costs and expenses	1,028,884	938,325	881,698
Operating income	33,192	85,750	449,082
Interest expense, net	(28,923)	(24,218)	(27,400)
Pension settlement charge	0	0	(14,165)
Non-operating pension and other postretirement employee benefits	803	(914)	(8,138)
Other	3,115	1,267	(67)
Income before income taxes	8,187	61,885	399,312
Income taxes	13,689	216	(65,412)
Net income	$ 21,876	$ 62,101	$ 333,900
Net income per share:
Basic	$ 0.28	$ 0.78	$ 4.59
Diluted	0.28	0.77	4.58
Dividends per share	$ 1.8	$ 1.8	$ 2.72
Weighted-average shares outstanding
Basic	79,236	79,985	72,740
Diluted	79,339	80,167	72,922