Debt instrument, maturity extension period.

No definition available.

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- Definition

Debt instrument, number of extensions.

+ References

No definition available.

+ Details

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- Definition

Debt instrument, Unamortized discount, Percent of face amount.

+ References

No definition available.

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- Definition

Debt instrument, yield to maturity.

+ References

No definition available.

+ Details

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- Definition

Debt instrument, yield to maturity spread at time of pricing.

+ References

No definition available.

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- Definition

Line of credit facility, covenant, maximum leverage ratio.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility, covenant, maximum percent of payments of dividends and distributions.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility, covenant, maximum secured indebtedness to asset value ratio.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility, covenant, maximum unsecured indebtedness to unencumbered asset value ratio.

+ References

No definition available.

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- Definition

Line of credit facility, covenant, minimum fixed charge coverage ratio.

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No definition available.

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- Definition

Line of credit facility, covenant, minimum unencumbered cash flow to interest expense on unsecured debt ratio.

+ References

No definition available.

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- Definition

Maximum credit spread on LIBOR based loans.

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No definition available.

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Maximum debt instrument, basis spread on variable rate.

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No definition available.

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- Definition

Minimum credit spread on LIBOR based loans.

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No definition available.

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- Definition

Treasury note rate term.

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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

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- Definition

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

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- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

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- Definition

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

+ References

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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.

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt premium.

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- Definition

Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Gross amount of debt extinguished.

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No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Aggregate amount of interest expense on all borrowings.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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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

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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No definition available.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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- Definition

The cash inflow from a borrowing supported by a written promise to pay an obligation.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Debt Obligations (Textual) (Details)					12 Months Ended
Debt Obligations (Textual) (Details)	Jul. 17, 2018 USD ($) Extension	Dec. 18, 2017 USD ($)	Nov. 16, 2017 USD ($)	Nov. 09, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Line of Credit					$ 92,500,000	$ 0
Loss on early extinguishment of debt					(105,000)	(3,933,000)	$ (66,590,000)
Extinguishment of Debt, Amount					$ 0	$ 325,000,000.0	$ 0
Prior Revolving Credit Facilty [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	May 15, 2019
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate					3.24%	2.28%
Line of Credit					$ 92,500,000	$ 0
Effective interest rate on credit facility					3.61%
Interest expense borrowings					$ 1,000,000.0	$ 2,600,000
Revolving Credit Facility [Member] \| New Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 600,000,000.0
Debt instrument maturity date	Jul. 15, 2022
Debt instrument, number of extensions \| Extension	2
Debt instrument, maturity extension period	6 months
Debt financing costs	$ 2,700,000
Minimum Credit Spread on a LIBOR Rate Loan					0.00%
Maximum Credit Spread on a LIBOR Rate Loan					0.45%
Commitment fee percentage					0.25%
Minimum fixed charge coverage ratio					1.5
Maximum leverage ratio					0.60
Maximum unsecured indebtedness to unencumbered asset value ratio					0.60
Maximum secured indebtedness to total asset value ratio					0.40
Minimum unencumbered cash flow to interest expense on unsecured debt ratio					1.75
Maximum percent of payments of dividends and distributions					95.00%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage					0.125%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage					0.30%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Variable interest rate					1.10%
Basis spread on variable rate					1.00%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate					0.775%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate					1.45%
Revolving Credit Facility [Member] \| New Credit Facility [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate					0.50%
Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate					4.05%	4.04%	4.03%
Long-term Debt, Gross					$ 323,032,000	$ 320,107,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross					$ 1,721,110,000	1,628,610,000
Unsecured Debt [Member] \| $450.0M 3.95% Guaranteed Notes due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date					Oct. 01, 2024
Long-term Debt, Gross				$ 450,000,000.0	$ 450,000,000	450,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.95%
Debt instrument, Unamortized discount, Percent of face amount				99.25%
Debt instrument, Yield to maturity				4.04%
Debt instrument, Yield to maturity spread at time of pricing				1.70%
Treasury note rate term				10 years
Unsecured Debt [Member] \| $350M 3.95% Guaranteed Notes due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date					Apr. 15, 2018
Long-term Debt, Gross					$ 350,000,000	350,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.95%
Debt Instrument, Face Amount				$ 100,000,000.0
Debt instrument, Unamortized discount, Percent of face amount				102.497%
Debt instrument, Yield to maturity				3.40%
Debt instrument, Yield to maturity spread at time of pricing				1.40%
Treasury note rate term				5 years
Unsecured Debt [Member] \| Notes 2027 and 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount						3,400,000
Debt Instrument, Unamortized Premium						$ 2,500,000
Proceeds from Notes Payable				$ 546,600,000
Unsecured Debt [Member] \| Notes 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		$ 211,600,000	$ 115,100,000
Repayments of debt			113,400,000
Repayment of prepayment penalties		2,300,000	1,200,000
Repayment of accrued interest		1,800,000	500,000
Loss on early extinguishment of debt		(2,500,000)	$ (1,400,000)
Debt instrument, cash redemption price		$ 215,700,000