Timber and Timberlands (Schedule of Timber and Timberlands) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Timber And Timberlands [Abstract]
Timber and timberlands	$ 1,597,011	$ 1,516,788
Logging roads	85,660	83,273
Total timber and timberlands, net	$ 1,682,671	$ 1,600,061