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Financial Instruments and Fair Value Measurements - Held by Special Purpose Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Mar. 31, 2024	Dec. 31, 2023
Financial instruments and fair value measurements
Investments held by special purpose entities		$ 203,805	$ 204,196
Senior Notes held by special purpose entity		178,241	178,162
Consolidated Joint Ventures
Financial instruments and fair value measurements
Investments held by special purpose entities		203,805	204,196
Senior Notes held by special purpose entity		178,241	$ 178,162
Panama City Timber Finance Company, LLC \| 2014 real estate sale
Financial instruments and fair value measurements
Notes received as consideration in sale of real estate	$ 200,000
Promissory notes maturity period	15 years
Panama City Timber Finance Company, LLC \| Time deposit
Financial instruments and fair value measurements
Investments held by special purpose entities		$ 200,000
Investment interest rate (as a percent)		4.00%
Panama City Timber Finance Company, LLC \| U.S. Treasury Bills
Financial instruments and fair value measurements
Investments held by special purpose entities		$ 3,400
Panama City Timber Finance Company, LLC \| Cash
Financial instruments and fair value measurements
Investments held by special purpose entities		400
Northwest Florida Timber Finance, LLC
Financial instruments and fair value measurements
Loan amount	$ 180,000
Debt interest rate (as a percent)	4.80%
Issue price of senior secured notes (as a percent)	98.50%
Senior Notes held by special purpose entity		178,200
Unamortized discount and debt issuance costs		$ 1,800