HIGHER AND BETTER USE TIMBERLANDS AND REAL ESTATE DEVELOPMENT INVESTMENTS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance	$ 81,791
Plus: Current portion, beginning balance	12,663
Total Balance, beginning	94,454
Non-cash cost of land and improved development	(9,224)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(725)
Capitalized real estate development investments	6,462
HBU properties acquired in merger with Pope Resources	26,510
Capital expenditures (silviculture)	427
Intersegment transfers	(2,630)
Total Balance, ending	115,274
Less: Current portion, ending balance	(6,756)
Non-current portion, ending balance	108,518
Capitalized interest	400
Land and Timber
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance	58,091
Plus: Current portion, beginning balance	274
Total Balance, beginning	58,365
Non-cash cost of land and improved development	(1,834)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(725)
Capitalized real estate development investments	0
HBU properties acquired in merger with Pope Resources	26,510
Capital expenditures (silviculture)	427
Intersegment transfers	(2,630)
Total Balance, ending	80,113
Less: Current portion, ending balance	(212)
Non-current portion, ending balance	79,901
Development Investments
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance	23,700
Plus: Current portion, beginning balance	12,389
Total Balance, beginning	36,089
Non-cash cost of land and improved development	(7,390)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	0
Capitalized real estate development investments	6,462
HBU properties acquired in merger with Pope Resources	0
Capital expenditures (silviculture)	0
Intersegment transfers	0
Total Balance, ending	35,161
Less: Current portion, ending balance	(6,544)
Non-current portion, ending balance	$ 28,617