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Leases (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) item | Dec. 31, 2015 USD ($)
Operating Leased Assets [Line Items] |  |
Option terms of lease | 5 years |
Minimum sublease rentals | $ 5,342 |
Number of sale leaseback transactions | item | 6 |
Total deemed landlord financing | $ 2,854 | $ 3,060
Shopping Center Or Building Leases [Member] | Minimum [Member] |  |
Operating Leased Assets [Line Items] |  |
Combined initial and option terms lease | 20 years |
Shopping Center Or Building Leases [Member] | Maximum [Member] |  |
Operating Leased Assets [Line Items] |  |
Combined initial and option terms lease | 25 years |
Ground Leases [Member] | Minimum [Member] |  |
Operating Leased Assets [Line Items] |  |
Combined initial and option terms lease | 30 years |
Ground Leases [Member] | Maximum [Member] |  |
Operating Leased Assets [Line Items] |  |
Combined initial and option terms lease | 40 years |

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- Definition Number of sale leaseback transactions + References No definition available. + Details
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- Definition Option terms of lease + References No definition available. + Details
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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 Contractually required future rental payments receivable on noncancelable subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Present value of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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- Details
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