SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Segment Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
SALES	$ 184,800	$ 245,906	$ 376,346	$ 449,101
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
SALES	46,197	48,047	107,043	91,635
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
SALES	18,556	32,213	39,091	63,587
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
SALES	62,127	69,653	119,257	122,617
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
SALES	22,533	49,860	43,532	85,924
Operating Segments | Trading
Segment Reporting Information [Line Items]
SALES	35,461	46,162	67,526	85,373
Intersegment Eliminations
Segment Reporting Information [Line Items]
SALES	$ (74)	$ (29)	$ (103)	$ (35)