Segment Information (Summary of Information by Business Segment) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2024		Jun. 30, 2023
Segment Reporting Information [Line Items]
Adjusted EBITDDA	$ 103,173		$ 45,445		$ 132,895		$ 103,222
Interest expense, net	(8,696)	[1]	(7,613)	[1]	(8,414)	[2]	(7,812)	[2]
Depreciation, depletion and amortization	(29,268)		(27,087)		(59,663)		(58,851)
Basis of real estate sold	(56,525)		(4,884)		(60,617)		(15,515)
CatchMark merger-related expenses	0		(244)		0		(2,453)
Gain (loss) on fire damage	0		23,110		0		23,110
Non-operating pension and other postretirement employee benefits	201		(229)		402		(457)
Gain (loss) on disposal of fixed assets	66		(21)		71		(21)
Other	(23)		258		(168)		268
Income before income taxes	8,928		28,735		4,506		41,491
Bond discounts and deferred loan fees	406	[1]	409	[1]	813	[2]	818	[2]
Total depreciation, depletion and amortization	29,674		27,496		60,476		59,669
Operating Segments [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	29,268		27,087		59,663		58,851
Operating Segments [Member] | Timberlands [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDDA	34,124		29,316		68,872		75,955
Depreciation, depletion and amortization	16,790		15,895		34,415		36,356
Operating Segments [Member] | Wood Products [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDDA	(6,805)		11,967		(6,944)		11,936
Depreciation, depletion and amortization	12,227		10,948		24,743		21,983
Operating Segments [Member] | Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDDA	89,568		12,237		95,796		31,702
Depreciation, depletion and amortization	136		121		274		277
Basis of real estate sold	56,528		4,887		60,622		15,518
Corporate [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDDA	(11,756)		(10,521)		(24,421)		(21,262)
Depreciation, depletion and amortization	115		123		231		235
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDDA	(1,958)		2,446		(408)		4,891
Basis of real estate sold	$ (3)		$ (3)		$ (5)		$ (3)

[1] Bond discounts and deferred loan fees are reported within interest expense, net on the Condensed Consolidated Statements of Operations.

[2] Intersegment revenues represent logs sold by our Timberlands segment to our Wood Products segment.