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Certain Balance Sheet Components (Schedule of Timber and Timberlands) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Timber And Timberlands [Abstract]    
Timber and timberlands $ 1,547,657 $ 1,554,882
Logging roads 82,839 83,781
Total timber and timberlands, net $ 1,630,496 $ 1,638,663