Debt instrument, Unamortized discount, Percent of face amount.

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.

+ Details

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- Definition

Line of credit facility, accordion feature, increase limit.

+ References

No definition available.

+ Details

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Period Type:	instant

- 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.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Maximum credit spread on LIBOR based loans.

+ References

No definition available.

+ Details

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- Definition

Maximum debt instrument, basis spread on variable rate.

+ References

No definition available.

+ Details

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- Definition

Minimum credit spread on LIBOR based loans.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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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))
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Period Type:	instant

- Definition

Net increase or decrease in the carrying amount of the debt instrument for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
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- Definition

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

+ References

+ Details

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Period Type:	instant

- Definition

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

+ References

+ Details

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Period Type:	instant

- 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

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Description of debt redemption features under terms of the debt agreement.

+ 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 e
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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	duration

- 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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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Balance Type:	debit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Balance Type:	debit
Period Type:	duration

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Balance Type:
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Balance Type:
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Balance Type:
Period Type:

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Balance Type:
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Debt Obligations (Textual) (Details) - USD ($)					9 Months Ended	12 Months Ended			15 Months Ended
Debt Obligations (Textual) (Details) - USD ($)	Jan. 14, 2016	Oct. 08, 2015	May 12, 2015	Sep. 16, 2014	Oct. 07, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Apr. 02, 2016	May 15, 2015
Debt Instrument [Line Items]
Extinguishment of Debt, Amount						$ 0	$ 0	$ 376,174,000
Loss on early extinguishment of debt	$ (66,600,000)					(66,590,000)	0	(7,594,000)
Loss on early extinguishment of debt - deferred financing costs								152,000
Recognized hedge activity						$ 0	$ 0	$ (828,000)
New Credit Facility [Member] \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt term			4 years
Maximum borrowing capacity											$ 600,000,000
Increase in limit											400,000,000
Minimum Credit Spread on a LIBOR Rate Loan						0.00%
Maximum Credit Spread on a LIBOR Rate Loan						0.55%
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%
New Credit Facility [Member] \| Revolving Credit Facility \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage						0.125%
New Credit Facility [Member] \| Revolving Credit Facility \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage						0.30%
New Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity											65,000,000
New Credit Facility [Member] \| Swing-Loans [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity											$ 60,000,000
New Credit Facility [Member] \| LIBOR [Member] \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.20%
Basis spread on variable rate						1.00%
New Credit Facility [Member] \| LIBOR [Member] \| Revolving Credit Facility \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.875%
New Credit Facility [Member] \| LIBOR [Member] \| Revolving Credit Facility \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.55%
New Credit Facility [Member] \| Federal Funds Rate [Member] \| Revolving Credit Facility
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						4.03%	5.72%	5.73%	4.03%
Long-term Debt, Gross						$ 325,038,000	$ 562,695,000		$ 325,038,000
Extinguishment of Debt, Amount	$ 44,400,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross						1,703,610,000	1,853,529,000		1,703,610,000
Recognized hedge activity				$ 800,000
Effective interest rate										6.00%
Unsecured Debt [Member] \| 250.0M 4.10% Guaranteed Notes due 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross						250,000,000	250,000,000		250,000,000
Debt instrument, Unamortized discount, Percent of face amount				99.388%
Debt instrument, Yield to maturity				4.175%
Debt instrument, Yield to maturity spread at time of pricing				1.70%
Debt Instrument, Unamortized Discount						$ 1,200,000	1,300,000		$ 1,200,000
Debt Instrument Maturity Date						Oct. 01, 2024
Effective interest rate						4.33%			4.33%
Unsecured Debt [Member] \| $250M 4.55% Guaranteed Notes due 2029 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross						$ 250,000,000	250,000,000		$ 250,000,000
Debt instrument, Unamortized discount, Percent of face amount				99.191%
Debt instrument, Yield to maturity				4.625%
Debt instrument, Yield to maturity spread at time of pricing				2.15%
Debt Instrument, Unamortized Discount						$ 1,700,000	1,800,000		$ 1,700,000
Debt Instrument Maturity Date						Oct. 01, 2029
Effective interest rate						4.60%			4.60%
Unsecured Debt [Member] \| Notes 2024 and 2029 [Member]
Debt Instrument [Line Items]
Proceeds from Notes Payable				$ 492,900,000
Unsecured Debt [Member] \| $250.0M 5.400% Guaranteed Notes due 2014 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						5.40%			5.40%
Extinguishment of Debt, Amount				75,100,000
Debt Instrument, Repurchased Face Amount				143,500,000
Debt Instrument, Redemption, Description						$1,026.88 per $1,000
Unsecured Debt [Member] \| 7.50% Guaranteed Notes due May 15, 2015 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						7.50%			7.50%
Extinguishment of Debt, Amount				42,700,000
Loss on early extinguishment of debt								$ 5,000,000
Debt Instrument, Repurchased Face Amount				114,900,000
Debt Instrument, Redemption, Description						$1,070.24 per $1,000
Unsecured Debt [Member] \| Notes 2015 and 2015 [Member]
Debt Instrument [Line Items]
Loss on early extinguishment of debt								$ 2,600,000
Unsecured Debt [Member] \| Three Year Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount				$ 150,000,000
Debt Instrument Maturity Date				Feb. 01, 2015
Unsecured Debt [Member] \| Four-Year Term Loan - Swapped to fixed [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount				$ 100,000,000
Unsecured Debt [Member] \| Four-Year Term Loan - Variable [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date				Feb. 01, 2016
Unsecured Debt [Member] \| Three and Four Year Term Loan [Member]
Debt Instrument [Line Items]
Loss on early extinguishment of debt - deferred financing costs				$ 300,000
Unsecured Debt [Member] \| Seven Year Term Loan - Swapped to fixed [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 250,000,000			$ 200,000,000	$ 250,000,000	$ 250,000,000		$ 250,000,000
Debt Instrument Maturity Date					Feb. 01, 2019	Oct. 01, 2022			Oct. 08, 2022
Increase in debt		50,000,000
Increase in limit		$ 150,000,000
Effective interest rate		3.72%				3.72%			3.72%
Unsecured Debt [Member] \| Seven Year Term Loan - Swapped to fixed [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.80%
Unsecured Debt [Member] \| New Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date						May 15, 2019