DEBT - Narrative and Debt Covenants (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)	Mar. 31, 2021 NZD ($)
Debt Instrument [Line Items]
Repayments	$ 0
Working Capital Facility
Debt Instrument [Line Items]
Borrowings	0
Repayments	0
Remaining borrowing capacity		$ 20.0
Minority Shareholder Due 2025 At 2.95% \| Matariki Forestry Group
Debt Instrument [Line Items]
Outstanding balance	$ 24,100,000
Term Credit Agreement \| LIBOR
Debt Instrument [Line Items]
Basis points on periodic interest rate	1.60%
Incremental Term Loan Agreement \| LIBOR
Debt Instrument [Line Items]
Basis points on periodic interest rate	1.90%
2020 Incremental Term Loan Facility \| LIBOR
Debt Instrument [Line Items]
Basis points on periodic interest rate	1.85%
Excluding Timber Funds
Debt Instrument [Line Items]
Total debt, excluding Timber Funds	$ 1,301,771,000
Excluding Timber Funds \| Term Credit Agreement
Debt Instrument [Line Items]
Stated interest rate	1.70%	1.70%
Total debt, excluding Timber Funds	$ 350,000,000
Excluding Timber Funds \| Incremental Term Loan Agreement
Debt Instrument [Line Items]
Stated interest rate	2.00%	2.00%
Total debt, excluding Timber Funds	$ 300,000,000
Excluding Timber Funds \| 2020 Incremental Term Loan Facility
Debt Instrument [Line Items]
Stated interest rate	2.00%	2.00%
Total debt, excluding Timber Funds	$ 250,000,000
Timber Funds
Debt Instrument [Line Items]
Total debt, excluding Timber Funds	$ 59,975,000
Timber Funds \| Fund II Mortgages Payable
Debt Instrument [Line Items]
Loan-to-value ratio, percentage	50.00%
Timber Funds \| Fund III Mortgages Payable
Debt Instrument [Line Items]
Loan-to-value ratio, percentage	50.00%
Ratio of minimum interest coverage	1.5	1.5
Working capital	$ 500,000
Timber Funds \| Fund II Mortgages Payable, Due 2022 At 1.700%
Debt Instrument [Line Items]
Stated interest rate	2.00%	2.00%
Timber Funds \| Fund II Mortgages Payable, Due 2022 At 1.700% \| LIBOR
Debt Instrument [Line Items]
Basis points on periodic interest rate	1.70%
Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings	$ 0
Revolving Credit Facility \| Excluding Timber Funds
Debt Instrument [Line Items]
Remaining borrowing capacity	299,100,000
Amount to secure outstanding letters of credit	900,000
Maximum borrowing capacity	300,000,000
Northwest Farm Credit Services Credit Facility \| Excluding Timber Funds
Debt Instrument [Line Items]
Long-term debt fair value	$ 45,000,000

Debt Covenant, Ratio Of Minimum Interest Coverage

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- Definition

Debt Covenant, Working Capital

+ References

No definition available.

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- Definition

Debt Loan to Value Percentage

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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