SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Segment Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
SALES	$ 194,719	$ 261,550	$ 381,232	$ 396,393
Southern Timber
Segment Reporting Information [Line Items]
SALES	30,778	29,640	63,493	74,380
Pacific Northwest Timber
Segment Reporting Information [Line Items]
SALES	19,451	16,869	44,243	36,178
New Zealand Timber
Segment Reporting Information [Line Items]
SALES	77,163	47,748	117,904	83,772
Real Estate
Segment Reporting Information [Line Items]
SALES	25,620	137,307	79,909	150,670
Real Estate | Timberland | Dispositions
Segment Reporting Information [Line Items]
SALES		129,500	42,000	129,500
Trading
Segment Reporting Information [Line Items]
SALES	$ 41,707	$ 29,986	$ 75,683	$ 51,393