SEGMENT AND GEOGRAPHICAL INFORMATION (Narrative) (Details)	9 Months Ended
Sep. 30, 2020 segment fund	May 08, 2020 segment fund
Segment Reporting Information [Line Items]
Number of additional reportable segments		1
Number of reportable segments	6
ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary \| ORM Timber Fund II
Segment Reporting Information [Line Items]
Ownership interest	20.00%
ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary \| ORM Timber Fund III
Segment Reporting Information [Line Items]
Ownership interest	5.00%
ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary \| ORM Timber Fund IV
Segment Reporting Information [Line Items]
Ownership interest	15.00%
Merger with Pope Resources
Segment Reporting Information [Line Items]
Number of timber funds acquired \| fund	3	3

Business Acquisition, Number Of Timber Funds Acquired

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Number Of Additional Reportable Segments

+ References

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121559654&loc=SL6759159-111685

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