Segment and Geographical Information - Schedule of Gross Capital Expenditures (Details) - USD ($) $ in Thousands		12 Months Ended
	May 10, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total capital expenditures		$ 58,723	$ 57,293	$ 63,713
Total timberland acquisitions	$ 263,000	366,481	98,409	130,896
Total Gross Capital Expenditures		425,204	155,702	194,609
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Total capital expenditures		33,487	33,245	36,033
Total timberland acquisitions		103,947	54,408	125,650
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Total capital expenditures		8,036	8,515	9,742
Total timberland acquisitions		262,534	34,052	1,878
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Total capital expenditures		16,095	15,143	17,344
Total timberland acquisitions		0	9,949	923
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Total capital expenditures		315	313	195
Total timberland acquisitions		0	0	2,445
Operating Segments | Trading
Segment Reporting Information [Line Items]
Total capital expenditures		0	0	0
Total timberland acquisitions		0	0	0
Corporate and other
Segment Reporting Information [Line Items]
Total capital expenditures		790	77	399
Total timberland acquisitions		$ 0	$ 0	$ 0