Segment and Geographical Information - Schedule of Sales by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales	$ 220,464	$ 171,421	$ 261,550	$ 134,843	$ 137,111	$ 151,657	$ 115,801	$ 140,305	$ 788,278	$ 544,874	$ 603,521
Real Estate | Improved Development
Segment Reporting Information [Line Items]
Sales									1,740	2,610	0
Real Estate | Unimproved Development
Segment Reporting Information [Line Items]
Sales									5,540	6,399	4,794
Real Estate | Rural
Segment Reporting Information [Line Items]
Sales									18,672	22,653	40,954
Real Estate | Non-Strategic / Timberlands
Segment Reporting Information [Line Items]
Sales									66,133	54,831	9,533
Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
Sales									207,265	0	22,000
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Sales									132,855	139,093	141,833
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Sales									75,187	76,488	102,232
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Sales									172,574	161,570	182,421
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Sales									299,350	86,493	77,281
Operating Segments | Trading
Segment Reporting Information [Line Items]
Sales									108,312	81,230	103,678
Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales									$ 0	$ 0	$ (3,924)