MERGER WITH POPE RESOURCES (Fair Value of Identifiable Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	May 08, 2020
Merger with Pope Resources
Restructuring Cost and Reserve [Line Items]
Cash		$ 16,250
Accounts receivable		4,059
Other current assets		1,150
Timber and Timberlands		987,441
Higher and Better Use Timberlands and Real Estate Development Investments		27,722
Property, plant and equipment		8,307
Other assets		4,297
Total identifiable assets acquired		1,049,226
Accounts payable		567
Current maturities of long-term debt		25,084
Accrued interest		519
Other current liabilities		9,143
Long-term debt		89,261
Long-term environmental liabilities		11,000
Other non-current liabilities		4,051
Total liabilities assumed		139,625
Net identifiable assets		909,601
Less: noncontrolling interest		(371,680)
Total net assets acquired		537,921
Deferred income tax liability	$ 4,000
Core Timberlands
Restructuring Cost and Reserve [Line Items]
Cash		7,380
Accounts receivable		2,265
Other current assets		651
Timber and Timberlands		515,541
Higher and Better Use Timberlands and Real Estate Development Investments		27,722
Property, plant and equipment		8,307
Other assets		4,297
Total identifiable assets acquired		566,163
Accounts payable		274
Current maturities of long-term debt		0
Accrued interest		244
Other current liabilities		7,203
Long-term debt		53,502
Long-term environmental liabilities		11,000
Other non-current liabilities		4,051
Total liabilities assumed		76,274
Net identifiable assets		489,889
Less: noncontrolling interest		(3,307)
Total net assets acquired		486,582
Timber Funds
Restructuring Cost and Reserve [Line Items]
Cash		8,870
Accounts receivable		1,794
Other current assets		499
Timber and Timberlands		471,900
Higher and Better Use Timberlands and Real Estate Development Investments		0
Property, plant and equipment		0
Other assets		0
Total identifiable assets acquired		483,063
Accounts payable		293
Current maturities of long-term debt		25,084
Accrued interest		275
Other current liabilities		1,940
Long-term debt		35,759
Long-term environmental liabilities		0
Other non-current liabilities		0
Total liabilities assumed		63,351
Net identifiable assets		419,712
Less: noncontrolling interest		(368,373)
Total net assets acquired		$ 51,339