Commitments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) lease	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]
2017	$ 13,788
2018	8,532
2019	8,532
2020	8,532
2021	8,361
Thereafter	26,171
Total	73,916
Purchase Obligation, Fiscal Year Maturity [Abstract]
2017	25,785
2018	18,535
2019	17,920
2020	17,415
2021	17,247
Thereafter	178,249
Total	$ 275,151
Matariki Crown Forest Licenses
Purchase Obligation, Fiscal Year Maturity [Abstract]
Future minimum payments included, years	20 years
Lessee Leasing Arrangements, Operating Leases, Termination Notice (in years)	35 years
Lessee Leasing Arrangements, Operating Leases, Renewal Term (in years)	1 year
Number of Leases Under Termination Notice | lease	4
Number of Fixed Term Forest Leases Expiring | lease	2
Operating Leases
Operating Leased Assets [Line Items]
Rent expense	$ 2,000	$ 2,300	$ 1,900
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	1,682
2018	876
2019	728
2020	588
2021	552
Thereafter	1,180
Total	5,606
Timber Leases
Operating Leased Assets [Line Items]
Expenditures for long-term leases and deeds on timberlands	10,700	$ 11,300	$ 12,800
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	10,315
2018	9,127
2019	8,660
2020	8,295
2021	8,334
Thereafter	150,898
Total	$ 195,629
Timber Leases | United States | Minimum
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, term of contract (in years)	30 years
Timber Leases | United States | Maximum
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, term of contract (in years)	65 years
Timber Leases | New Zealand | Minimum
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, term of contract (in years)	30 years
Timber Leases | New Zealand | Maximum
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, term of contract (in years)	99 years