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Borrowings (Union Square Construction Financing) (Narrative) (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 29, 2016 USD ($) loan | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |
Contractual facility |  | $ 252,929 | $ 271,732 |
Union Square Construction Financing [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Contractual facility | $ 57,500 | 57,500 |  |
Advanced-to-Date |  | 27,182 |  |
Facility Limit |  | 57,500 |  |
Union Square Construction Financing [Member] | Bank Of The Ozarks [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Contractual facility | $ 50,000 |  |  |
Number of loan tranches | loan | 3 |  |  |
Union Square Construction Financing [Member] | Bank Of The Ozarks [Member] | Senior Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Advanced-to-Date |  | 8,000 |  | $ 8,000
Facility Limit |  | 8,000 |  | 8,000
Union Square Construction Financing [Member] | Tammany Mezz Investor, LLC [Member] | Mezzanine Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Contractual facility |  |  |  | $ 7,500
Advanced-to-Date |  | 7,500 |  |
Facility Limit |  | $ 7,500 |  |

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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