DEBT (Schedule of Long Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,068,774
Less: Current maturities of long-term debt	(31,752)	$ 0
Less: Deferred financing costs	(3,734)
Long-term debt, net of deferred financing costs	1,033,288	$ 830,554
Senior Notes due 2022 at a fixed interest rate of 3.75%
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 325,000
Fixed interest rate	3.75%
Incremental Term Loan Agreement borrowings due 2026 at a variable interest rate of 2.4% at September 30, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 300,000
Variable interest rate	2.40%
Mortgage notes due 2017 at fixed interest rates of 4.35%
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 31,752
Fixed interest rate	4.35%
Revolving Credit Facility borrowings due 2020 at a variable interest rate of 1.8% at September 30, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 25,000
Variable interest rate	1.80%
Solid waste bond due 2020 at a variable interest rate of 2.1% at September 30, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 15,000
Variable interest rate	2.10%
New Zealand JV noncontrolling interest shareholder loan at 0% interest rate
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 22,022
Fixed interest rate	0.00%
Term Loan Facility \| Term Credit Agreement borrowings due 2024 at a variable interest rate of 2.1% at September 30, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 350,000
Variable interest rate	2.10%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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Contractual interest rate for funds borrowed, under the debt agreement.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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