Segment and Geographical Information - Schedule of the Non-cash Cost of Land Sold (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	$ 33,862	$ 12,509	$ 13,264
Real Estate | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	22,200
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	0	0	0
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	0	0	0
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	1,824	467	4,328
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	32,038	12,042	8,936
Operating Segments | Trading
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	0	0	0
Corporate and other
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	$ 0	$ 0	$ 0