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Co-Venture Arrangement (Details) $ / shares in Units, ft² in Thousands, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 30, 2009 USD ($) ft² $ / shares shares | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Co-Venture Arrangement |  |  |  |
Cash proceeds for the overall transaction |  | $ 724,275 | $ 646,898 | $ 320,123
Co-venture obligation |  | 58,973 | 63,756 |
Freehold Raceway Mall and Chandler Fashion Center |  |  |  |
Co-Venture Arrangement |  |  |  |
Ownership interest (as a percent) | 49.90% |  |  |
Warrant in favor of the third party to purchase shares of common stock (in shares) | shares | 935,358 |  |  |
Exercise price of stock warrants (in dollars per share) | $ / shares | $ 46.68 |  |  |
Cash proceeds for the overall transaction | $ 174,650 |  |  |
Proceeds attributed to warrants | 6,496 |  |  |
Co-venture obligation | $ 168,154 | $ 58,973 | $ 63,756 |
Freehold Raceway Mall |  |  |  |
Co-Venture Arrangement |  |  |  |
Property square footage | ft² | 1,674 |  |  |
Chandler Fashion Center |  |  |  |
Co-Venture Arrangement |  |  |  |
Property square footage | ft² | 1,319 |  |  |

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- Definition Cash inflows from the sale of partnership interests, other assets, and discontinued operations. + References No definition available. + Details
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- Definition Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28183637&loc=d3e4724-112606 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Warrant -URI http://asc.fasb.org/extlink&oid=6528364 + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + 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.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + 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.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 40 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.U.Q2) -URI http://asc.fasb.org/extlink&oid=6955272&loc=d3e221323-122791 + Details
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