Debt Covenant, Amount of Borrowing Available

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- Definition

Debt Instrument, Covenant Ratio, Debt To Capitalization Limit

+ References

No definition available.

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- Definition

Letters of Credit Supported by Credit Facility

+ References

No definition available.

+ Details

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- Definition

Additional borrowing capacity under the credit facility based on an accordion feature.

+ References

No definition available.

+ Details

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- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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-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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- 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

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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ 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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

The amount of cash paid for interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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-Section 45
-Paragraph 25
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The cash outflow to repay long-term tax exempt debt that is not secured by collateral.

+ References

+ Details

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DEBT (Narrative) (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
DEBT (Narrative) (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 26, 2013	Feb. 26, 2013	Dec. 08, 2011	Dec. 01, 2005
DebtInstrumentLineItems
Repayments of Long-term Debt		$ 8,400	$ 80	$ 125,033
DebtInstrumentCovenantDescription		0.6
LineOfCreditFacilityInterestRateDescription		Borrowings under the credit agreement will accrue interest based on (i) Libor or (ii) a base rate of the highest of (a) the federal funds rate plus 0.5%, (b) BofA’s announced prime rate, or (c) the Eurocurrency rate plus 1%, plus a margin. The interest rate and level of facility fees are dependent on certain financial ratios, as defined in the Credit Agreement. The Credit Agreement also provides customary fees, including administrative agent and commitment fees. In connection with the Credit Agreement, we paid customary transaction fees that have been deferred and are being amortized over the term of the Credit Agreement.
Debt Instrument, Covenant Ratio, Debt To Capitalization Limit		60.00%
InterestPaid		$ 33,000	$ 33,000	$ 31,000
Repayments of Unsecured Tax Exempt Debt	$ 8,400
Revolving Credit Facility [Member]
DebtInstrumentLineItems
DebtWeightedAverageInterestRate		3.20%	1.70%
Line Of Credit Facility Additional Borrowing Capacity		$ 100,000
Letters of Credit Supported by Credit Facility		37,000
Debt Covenant, Amount of Borrowing Available		$ 463,000
Long-term Debt [Member]
DebtInstrumentLineItems
DebtWeightedAverageInterestRate		3.30%	3.00%
Debt Covenant, Amount of Borrowing Available		$ 800,000
Senior Notes Four Twenty Four [Member]
DebtInstrumentLineItems
Debt Instrument, Maturity Date		Dec. 01, 2026
Debt Instrument, Face Amount							$ 200,000
Debt Instrument, Interest Rate, Stated Percentage							4.24%
Senior Notes Four Zero Five [Member]
DebtInstrumentLineItems
Debt Instrument, Maturity Date		Feb. 26, 2028
Debt Instrument, Face Amount						$ 75,000
Debt Instrument, Interest Rate, Stated Percentage						4.05%
Senior Notes Four Eleven [Member]
DebtInstrumentLineItems
DebtInstrumentIssuanceDate		Sep. 26, 2013
Debt Instrument, Maturity Date		Sep. 26, 2028
Debt Instrument, Face Amount					$ 100,000
Debt Instrument, Interest Rate, Stated Percentage					4.11%
Senior Notes Three Eighty Four [Member]
DebtInstrumentLineItems
Debt Instrument, Maturity Date		Dec. 01, 2021
Debt Instrument, Face Amount							$ 100,000
Debt Instrument, Interest Rate, Stated Percentage							3.84%
Senior Notes Three Seventy [Member]
DebtInstrumentLineItems
Debt Instrument, Maturity Date		Feb. 26, 2023
Debt Instrument, Face Amount						$ 225,000
Debt Instrument, Interest Rate, Stated Percentage						3.70%
Senior Notes Three Eighty Five [Member]
DebtInstrumentLineItems
Debt Instrument, Maturity Date		Feb. 26, 2025
Debt Instrument, Face Amount						$ 100,000
Debt Instrument, Interest Rate, Stated Percentage						3.85%
Two Thousand Thirteen Senior Notes [Member]
DebtInstrumentLineItems
DebtInstrumentIssuanceDate		Feb. 26, 2013
Debt Instrument, Face Amount						$ 500,000
Two Thousand Eleven Notes [Member]
DebtInstrumentLineItems
DebtInstrumentIssuanceDate		Dec. 08, 2011
Debt Instrument, Face Amount							$ 300,000
Two Thousand Five [Member]
DebtInstrumentLineItems
DebtInstrumentIssuanceDate		Dec. 01, 2005
Debt Instrument, Maturity Date		Dec. 01, 2017
Debt Instrument, Face Amount								$ 150,000
Debt Instrument, Interest Rate, Stated Percentage								5.51%
Revolving Credit Facility [Member]
DebtInstrumentLineItems
LineOfCreditFacilityMaximumBorrowingCapacity		$ 500,000
Line of Credit Facility, Initiation Date		Aug. 31, 2012
Discontinued Operations [Member] \| Revolving Credit Facility [Member]
DebtInstrumentLineItems
Letters of Credit Outstanding, Amount		$ 3,000