Debt Schedule of Long-Term Debt Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Senior Secured Facilities Agreement as Amended July 2013, Revolving Cash Advance Facility due 2016 [Member] Matariki Forestry Group [Member]	Dec. 31, 2012 Senior Secured Facilities Agreement as Amended July 2013, Revolving Cash Advance Facility due 2016 [Member] Matariki Forestry Group [Member]	Dec. 31, 2013 Senior Notes due 2022 at a fixed interest rate of 3.75% [Member]	Dec. 31, 2012 Senior Notes due 2022 at a fixed interest rate of 3.75% [Member]	Dec. 31, 2013 Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% [Member]		Dec. 31, 2012 Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% [Member]		Aug. 31, 2009 Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% [Member]	Dec. 31, 2013 Installment note due 2014 at a fixed interest rate of 8.64% [Member]	Dec. 31, 2012 Installment note due 2014 at a fixed interest rate of 8.64% [Member]	Dec. 31, 2013 Mortgage notes due 2017 at fixed interest rates of 4.35% [Member]		Dec. 31, 2012 Mortgage notes due 2017 at fixed interest rates of 4.35% [Member]		Nov. 30, 2011 Mortgage notes due 2017 at fixed interest rates of 4.35% [Member]	Dec. 31, 2013 Pollution control bond (retired in May 2012) and solid waste bond due 2020 at a variable interest rate of 1.57% at December 31, 2012 [Member]	Dec. 31, 2012 Pollution control bond (retired in May 2012) and solid waste bond due 2020 at a variable interest rate of 1.57% at December 31, 2012 [Member]	Dec. 31, 2013 April 2011 Line of Credit as Amended October 2012 [Member]	Dec. 31, 2012 April 2011 Line of Credit as Amended October 2012 [Member]	Dec. 31, 2013 Term Credit Agreement borrowings due 2019 at a variable interest rate of 1.71% at December 31, 2012 [Member]	Dec. 31, 2012 Term Credit Agreement borrowings due 2019 at a variable interest rate of 1.71% at December 31, 2012 [Member]	Dec. 31, 2013 Noncontrolling interest shareholder loan at 0% interest rate [Member] Matariki Forestry Group [Member]	Dec. 31, 2012 Noncontrolling interest shareholder loan at 0% interest rate [Member] Matariki Forestry Group [Member]
Debt Instrument [Line Items]
Total debt	$ 1,574,224	$ 1,270,052	$ 193,311	$ 0	$ 325,000	$ 325,000	$ 127,749	[1]	$ 165,821	[1]		$ 112,500	$ 112,500	$ 65,165	[2]	$ 76,731	[2]		$ 15,000	$ 15,000	$ 205,000	$ 275,000	$ 500,000	$ 300,000	$ 30,499	$ 0
Less: Current maturities of long-term debt	(112,500)	(150,000)
Long-term debt	$ 1,461,724	$ 1,120,052
Fixed interest rate					3.75%		4.50%	[1]			4.50%	8.64%		4.35%	[2]			4.35%
Variable interest rate			4.39%																1.50%		1.14%		1.67%		0.00%

[1] Our Senior Exchangeable Notes maturing in 2015 were discounted by $3.2 million and $6.7 million as of December 31, 2013 and 2012, respectively, but upon maturity the liability will be $131 million.

[2] The mortgage notes due in 2017 were recorded at a premium of $2.2 million and $3.2 million as of December 31, 2013 and 2012, respectively. Upon maturity the liability will be $63 million.