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FAIR VALUE OF FINANCIAL INSTRUMENTS (Debt) (Detail) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 964,808 | $ 966,298
Estimated Fair Value | 998,576 | 978,652
Long-term Debt, Gross | 950,408 | 950,668
Debt Issuance Costs, Net | (869) | (984)
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge | 15,269 | 16,614
5.51% Senior notes due 2017 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | 150,000 | 150,000
Estimated Fair Value | $ 150,888 | 154,509
Debt Instrument, Interest Rate, Stated Percentage | 5.51% |
3.84% Senior notes due 2021 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 100,000 | 100,000
Estimated Fair Value | $ 103,949 | 102,463
Debt Instrument, Interest Rate, Stated Percentage | 3.84% |
3.70% Senior notes due 2023 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 225,000 | 225,000
Estimated Fair Value | $ 232,186 | 226,946
Debt Instrument, Interest Rate, Stated Percentage | 3.70% |
3.85% Senior notes due 2025 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 100,000 | 100,000
Estimated Fair Value | $ 103,517 | 100,338
Debt Instrument, Interest Rate, Stated Percentage | 3.85% |
4.24% Senior notes due 2026 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 200,000 | 200,000
Estimated Fair Value | $ 211,242 | 203,592
Debt Instrument, Interest Rate, Stated Percentage | 4.24% |
4.05% Senior notes due 2028 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 75,000 | 75,000
Estimated Fair Value | $ 77,751 | 74,630
Debt Instrument, Interest Rate, Stated Percentage | 4.05% |
4.11% Senior Notes [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 100,000 | 100,000
Estimated Fair Value | $ 104,235 | 99,876
Debt Instrument, Interest Rate, Stated Percentage | 4.11% |
Other debt [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Carrying Value | $ 408 | 668
Estimated Fair Value | 408 | 668
Long-term Debt, gross [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Estimated Fair Value | $ 984,176 | $ 963,022

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References 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)) -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 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 3: 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 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References 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 + Details
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + 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=64930785&loc=d3e28555-108399 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 35 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=82917030&loc=d3e75592-113984 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. 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 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 3: 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 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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