Debt (Aggregate Future Principal And Interest Payments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jul. 01, 2015
Debt Instruments [Abstract]
2018	$ 356,264
2019	42,530
2020	238,963
2021	42,931
2022	$ 247,131
Collar \| Mortgages \| New Mortgage Loan \| Minimum
Debt [Line Items]
Effective interest rate (as a percent)		4.167%

Long Term Debt Maturities Repayment of Principal and Interest Year Five

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- Definition

Long-term Debt, Maturities, Repayments of Principal and Interest in Next Twelve Months

+ References

No definition available.

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- Definition

Long-term Debt, Maturities, Repayments of Principal and Interest in Year Four

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- Definition

Long-term Debt, Maturities, Repayments of Principal and Interest in Year Three

+ References

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- Definition

Long-term Debt, Maturities, Repayments of Principal Interest in Year Two

+ References

No definition available.

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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

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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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.

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