LEASES - Narrative (Details) a in Thousands	9 Months Ended
	Sep. 30, 2019 a lease
United States | Minimum | Timberland Leases
Lessee, Lease, Description [Line Items]
Contract terms, in years	30 years
United States | Maximum | Timberland Leases
Lessee, Lease, Description [Line Items]
Contract terms, in years	65 years
New Zealand | Minimum | Timberland Leases
Lessee, Lease, Description [Line Items]
Contract terms, in years	30 years
New Zealand | Maximum | Timberland Leases
Lessee, Lease, Description [Line Items]
Contract terms, in years	99 years
Matariki Crown Forest Licenses
Lessee, Lease, Description [Line Items]
Operating leases, renewal term	1 year
Matariki Crown Forest Licenses | Timberland Leases
Lessee, Lease, Description [Line Items]
Lease termination period	35 years
Matariki Crown Forest Licenses | Minimum | Timberland Leases
Lessee, Lease, Description [Line Items]
Lease termination period	35 years
Matariki Crown Forest Licenses | Maximum | Timberland Leases
Lessee, Lease, Description [Line Items]
Lease termination period	45 years
Matariki Crown Forest Licenses | New Zealand
Lessee, Lease, Description [Line Items]
Number of leases under termination notice | lease	2
Leases under termination notice | a	9
Number of fixed term forest leases expiring | lease	2
Fixed-term forest leases expiring, Acres | a	3
Number of forestry rights under termination notice | lease	2
Forestry rights under termination notice | a	32