Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)		$ (305)	$ 16,260
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, depletion and amortization		30,802	32,173
Basis of real estate sold		4,092	10,631
Change in deferred taxes		(4,145)	394
Pension and other postretirement employee benefits		1,143	1,611
Equity-based compensation expense		2,560	2,279
Interest received under swaps with other-than-insignificant financing element		(7,458)	(5,454)
Other, net		2,961	1,945
Change in working capital and operating-related activities, net		(13,252)	(17,205)
Real estate development expenditures		(1,135)	(2,408)
Funding of pension and other postretirement employee benefits		(914)	(1,087)
Proceeds from insurance recoveries		1,680	0
Net cash from operating activities		16,029	39,139
CASH FLOWS FROM INVESTING ACTIVITIES
Property, plant and equipment additions		(4,995)	(4,255)
Timberlands reforestation and roads		(7,874)	(6,118)
Acquisition of timber and timberlands		(31,438)	0
Interest received under swaps with other-than-insignificant financing element		6,938	5,055
Other, net		373	422
Net cash from investing activities		(36,996)	(4,896)
CASH FLOWS FROM FINANCING ACTIVITIES
Distributions to common stockholders		(35,779)	(35,962)
Other, net		(792)	(838)
Net cash from financing activities		(36,571)	(36,800)
Change in cash, cash equivalents and restricted cash		(57,538)	(2,557)
Cash, cash equivalents and restricted cash at beginning of period		237,688	345,591
Cash, cash equivalents and restricted cash at end of period		180,150	343,034
NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property, plant and equipment additions		10,401	1,835
Accrued timberlands reforestation and roads		1,028	1,041
Cash and cash equivalents		180,150	325,632
Restricted cash included in other long-term assets	[1]	$ 0	$ 17,402
Restricted Cash, Asset, Statement of Financial Position [Extensible List]		Other long-term assets	Other long-term assets
Total cash, cash equivalents, and restricted cash		$ 180,150	$ 343,034

[1] 1 Amounts included in restricted cash represent proceeds held by a qualified intermediary that were or are intended to be reinvested in timber and timberlands. At March 31, 2024 and 2023, $0 and $14.0 million, respectively, was classified as Other current assets.