SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ / shares in Units, a in Thousands								6 Months Ended	12 Months Ended
	Feb. 25, 2022	Feb. 01, 2022 USD ($)	Jan. 04, 2022 USD ($)	Jan. 03, 2022 USD ($)	Dec. 31, 2021 USD ($) method $ / shares	Oct. 01, 2020 USD ($)	May 08, 2020 a fund	Dec. 31, 2021 USD ($) transaction method $ / shares	Dec. 31, 2021 USD ($) method $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jul. 21, 2021 USD ($)
Other Ownership Interests [Line Items]
Loan term									10 years
Impairment									$ 0	$ 0
Conversion ratio on redeemable common units									1
Number of primary methods or sales channels | method					2			2	2
Contract duration (or less)									1 year
Issuance of debt									$ 446,378,000	320,000,000	$ 82,000,000
Repayments of debt									420,000,000	152,000,000	$ 0
Subsequent Event | Forward-starting interest rate swaps
Other Ownership Interests [Line Items]
Notional Amount		$ 200,000,000
Subsequent Event | Senior Notes due 2022 at a fixed interest rate of 3.75%
Other Ownership Interests [Line Items]
Debt, carrying amount			$ 325,000,000
Repayments of debt			125,000,000
Revolving Credit Facility borrowings due 2025 at an average variable interest rate of 1.3% at December 31, 2021 | Subsequent Event
Other Ownership Interests [Line Items]
Issuance of debt				$ 200,000,000
Repayments of debt			200,000,000
2021 Incremental Term Loan Facility | Subsequent Event
Other Ownership Interests [Line Items]
Issuance of debt			$ 200,000,000
Debt instrument, term		7 years
Variable interest rate		1.50%
2021 Incremental Term Loan Facility | Subsequent Event | LIBOR
Other Ownership Interests [Line Items]
Basis points on periodic interest rate	1.55%
Variable Interest Entity, Primary Beneficiary | ORM Timber Funds
Other Ownership Interests [Line Items]
Number of timber funds | fund							3
Area of land | a							141
Separate Investment Accounts
Other Ownership Interests [Line Items]
Net liability position					$ 8,720,000			$ 8,720,000	8,720,000	21,586,000
Timber Funds
Other Ownership Interests [Line Items]
Debt, carrying amount					0			0	0	$ 57,380,000
Timber Funds | ORM Timber Funds | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fund II Timberland Dispositions
Other Ownership Interests [Line Items]
Aggregate purchase price					$ 156,800,000			$ 156,800,000	$ 156,800,000
Number of separate transactions | transaction								3
New Zealand Timber
Other Ownership Interests [Line Items]
Impairment						$ 0
Minimum
Other Ownership Interests [Line Items]
Harvested in months, to be recorded as prepaid logging roads									24 months
Useful life									3 years
Life cycle of development projects									20 years
Deposit required					2.00%			2.00%	2.00%
Minimum | Buildings
Other Ownership Interests [Line Items]
Useful life									15 years
Minimum | Land Improvements
Other Ownership Interests [Line Items]
Useful life									5 years
Maximum
Other Ownership Interests [Line Items]
Harvested in months, to be recorded as prepaid logging roads									60 months
Useful life									25 years
Life cycle of development projects									40 years
Deposit required					5.00%			5.00%	5.00%
Maximum | Software Costs
Other Ownership Interests [Line Items]
Useful life									5 years
Maximum | Buildings
Other Ownership Interests [Line Items]
Useful life									35 years
Maximum | Land Improvements
Other Ownership Interests [Line Items]
Useful life									30 years
Operating Partnership
Other Ownership Interests [Line Items]
Ownership interest					97.80%
Ownership interest owned by limited partners					2.20%
CoBank
Other Ownership Interests [Line Items]
Percent of average loan balance									8.00%
Historical average loan									10 years
Equity purchase percentage by cash					88.00%			88.00%	88.00%
Equity percentage equity basis					12.00%			12.00%	12.00%
Cash value of stock until retired					$ 0			$ 0	$ 0
CoBank | Class A Common Stock
Other Ownership Interests [Line Items]
Common stock (in dollars per unit) | $ / shares					$ 100			$ 100	$ 100
ORM Timber Fund II | Variable Interest Entity, Primary Beneficiary | ORM Timber Funds
Other Ownership Interests [Line Items]
Ownership interest							20.00%		20.00%
ORM Timber Fund II | Timber Funds | Variable Interest Entity, Primary Beneficiary | ORM Timber Funds | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fund II Timberland Dispositions
Other Ownership Interests [Line Items]
Aggregate purchase price					$ 156,800,000			$ 156,800,000	$ 156,800,000
Number of separate transactions | transaction								3
ORM Timber Fund III | Variable Interest Entity, Primary Beneficiary | ORM Timber Funds
Other Ownership Interests [Line Items]
Ownership interest							5.00%		5.00%
ORM Timber Fund IV | Variable Interest Entity, Primary Beneficiary | ORM Timber Funds
Other Ownership Interests [Line Items]
Ownership interest							15.00%		15.00%
ORM Timber Fund III And IV | Timber Funds | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fund III And IV Timberland Dispositions
Other Ownership Interests [Line Items]
Aggregate purchase price												$ 35,900,000
ORM Timber Fund III And IV | Timber Funds | ORM Timber Funds | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fund III And IV Timberland Dispositions
Other Ownership Interests [Line Items]
Aggregate purchase price												$ 35,900,000