Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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- Definition

Debt extension period

+ References

No definition available.

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- Definition

The amount of price reduction expressed as a percent.

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No definition available.

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- Definition

Line of credit facility accordion feature.

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No definition available.

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- Definition

Line Of Credit Facility Weighted Average Percentage Outstanding Interest Rate.

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No definition available.

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- Definition

The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
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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.

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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-Paragraph 1
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Debt (Unsecured Credit Facility Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 20, 2018	Apr. 05, 2017
Debt Instrument [Line Items]
Reduction of price, percentage	20.00%
Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of derivative				$ 400,000	$ 400,000
Term Loan
Debt Instrument [Line Items]
Outstanding debt		$ 700,000
Term Loan \| Interest Rate Swap
Debt Instrument [Line Items]
Outstanding debt		200,000		400,000
Notional amount of derivative		200,000
Term Loan Maturing December 17,2021 \| Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of derivative				200,000	200,000
Term Loan Maturing April 27, 2022 \| Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of derivative				$ 200,000	$ 200,000
Term Loan Maturing April 27 2024 \| Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of derivative		100,000
Term Loan Maturing December 17 2023 \| Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of derivative		$ 100,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maturity date		Dec. 17, 2022
Outstanding debt		$ 252,000	$ 131,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Letter of credit outstanding		$ 4,100
Line of credit facility weighted average interest rate outstanding percentage		3.53%
Unsecured Credit Facility
Debt Instrument [Line Items]
Line of credit facility accordion feature		$ 500,000
Minimum \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		1.30%
Minimum \| Term Loan \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		0.30%
Minimum \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		1.35%
Minimum \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		0.35%
Maximum \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		1.90%
Maximum \| Term Loan \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		0.90%
Maximum \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		1.95%
Maximum \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate		0.95%
Maximum \| Unsecured Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 200,000
Unsecured Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			1,520,000
Additional contingent borrowing capacity, maximum			$ 2,020,000
Outstanding debt		$ 952,000
Unsecured Credit Facility \| Term Loan Maturing December 17,2021
Debt Instrument [Line Items]
Maturity date	Dec. 17, 2022
Unsecured Credit Facility \| Term Loan Maturing April 27 2024
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 350,000
Maturity date	Apr. 27, 2024
Unsecured Credit Facility \| Term Loan Maturing December 17 2023
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 350,000
Maturity date	Dec. 17, 2023
Unsecured Credit Facility \| Term Loan Maturing December 17, 2022
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 820,000
Unsecured Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt extension period			1 year