HIGHER AND BETTER USE TIMBERLANDS AND REAL ESTATE DEVELOPMENT INVESTMENTS (Details) - USD ($) $ in Thousands		9 Months Ended
	May 08, 2020	Sep. 30, 2021
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance		$ 108,518
Plus: Current portion, beginning balance		6,756
Total balance, beginning balance		115,274
Non-cash cost of land and improved development		(18,522)
Amortization of parcel real estate development investments		(4,518)
Timber depletion from harvesting activities and basis of timber sold in real estate sales		(948)
Capitalized real estate development investments		16,871
Capital expenditures (silviculture)		76
Intersegment transfers		8,179
Port Gamble purchase price adjustment		8,238
Total balance, ending balance		124,650
Less: Current portion, ending balance		(14,058)
Non-current portion, ending balance		110,592
Capitalized interest		400
Parcel real estate development investments		7,700
Merger with Pope Resources
Real Estate, Land and Land Development Costs [Roll Forward]
HBU properties acquired in merger with pope resources	$ 34,700
Land and Timber
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance		79,901
Plus: Current portion, beginning balance		212
Total balance, beginning balance		80,113
Non-cash cost of land and improved development		(11,566)
Amortization of parcel real estate development investments		0
Timber depletion from harvesting activities and basis of timber sold in real estate sales		(948)
Capitalized real estate development investments		0
Capital expenditures (silviculture)		76
Intersegment transfers		8,179
Port Gamble purchase price adjustment		8,238
Total balance, ending balance		84,092
Less: Current portion, ending balance		(601)
Non-current portion, ending balance		83,491
Development Investments
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, beginning balance		28,617
Plus: Current portion, beginning balance		6,544
Total balance, beginning balance		35,161
Non-cash cost of land and improved development		(6,956)
Amortization of parcel real estate development investments		(4,518)
Timber depletion from harvesting activities and basis of timber sold in real estate sales		0
Capitalized real estate development investments		16,871
Capital expenditures (silviculture)		0
Intersegment transfers		0
Port Gamble purchase price adjustment		0
Total balance, ending balance		40,558
Less: Current portion, ending balance		(13,457)
Non-current portion, ending balance		$ 27,101