Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]
2015	$ 472,000	[1]
2016	262,000	[1]
2017	191,000	[1]
2018	1,419,000	[1]
2019	4,525,000	[1]
Thereafter	1,673,000	[1]
Total	8,542,000	[1]
Purchase Obligation, Fiscal Year Maturity [Abstract]
2015	11,922,000
2016	10,930,000
2017	10,072,000
2018	9,776,000
2019	11,853,000
Thereafter	132,599,000
Total	187,152,000
Operating Leases [Member]
Operating Leased Assets [Line Items]
Rent expense	1,000,000		2,000,000	2,000,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	1,288,000
2016	941,000
2017	492,000
2018	277,000
2019	191,000
Thereafter	42,000
Total	3,231,000
Timber Properties [Member]
Operating Leased Assets [Line Items]
Expenditures for long-term leases and deeds on timberlands	10,400,000		10,400,000	8,000,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	10,162,000	[2]
2016	9,727,000	[2]
2017	9,389,000	[2]
2018	8,080,000	[2]
2019	7,137,000	[2]
Thereafter	130,884,000	[2]
Total	175,379,000	[2]
Matariki Crown Forest Licenses [Member]
Operating Leased Assets [Line Items]
Rent expense	2,200,000
Purchase Obligation, Fiscal Year Maturity [Abstract]
Lessee Leasing Arrangements, Operating Leases, Termination Notice	35 years
Lessee Leasing Arrangements, Operating Leases, Renewal Term	1 year
Number of Fixed Term Forest Leases Expiring	2
Number of Leases Under Termination Notice	4
Operating Leases, Rent Expense, Terminating or Expiring	$ 200,000
United States [Member] | Timber Properties [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	30 years
United States [Member] | Timber Properties [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	65 years
New Zealand [Member] | Timber Properties [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	30 years
New Zealand [Member] | Timber Properties [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	99 years

[1] Purchase obligations include payments expected to be made on derivative financial instruments (foreign exchange contracts and options) held in New Zealand.

[2] The majority of timberland leases are subject to increases or decreases based on either the Consumer Price Index, Producer Price Index or market rates.