COMMITMENTS (Future Minimum Payments) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($) lease
Commitments
Remaining 2018	$ 7,641
2019	5,121
2020	3,403
2021	1,573
2022	956
Thereafter	1,510
Commitments, total	20,204
Total
Remaining 2018	13,920
2019	15,026
2020	12,748
2021	10,806
2022	9,921
Thereafter	149,539
Total	211,960
Pension contribution requirements remaining in fiscal year	$ 1,700
Matariki Crown Forest Licenses
Total
Future minimum payments	20 years
Number of leases under termination notice \| lease	3
Number of leases expiring in 2062 \| lease	2
Operating Leases
Leases
Remaining 2018	$ 590
2019	1,032
2020	850
2021	736
2022	705
Thereafter	708
Operating leases, total	4,621
Timberland Leases
Leases
Remaining 2018	5,689
2019	8,873
2020	8,495
2021	8,497
2022	8,260
Thereafter	147,321
Operating leases, total	$ 187,135
Timberland Leases \| Matariki Crown Forest Licenses
Total
Operating lease, termination notice	35 years
Operating lease, renewal term	1 year

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