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Subsequent Events: (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 9 Months Ended |  | 0 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2011 | Oct. 25, 2012 Subsequent event Dividend declared | Oct. 03, 2012 Subsequent event FlatIron Crossing squarefoot | Oct. 26, 2012 Subsequent event Arrowhead Towne Center squarefoot | Dec. 07, 2012 Subsequent event Forecast Dividend declared | Oct. 21, 2012 Subsequent event Forecast Kings Plaza squarefoot | Oct. 21, 2012 Subsequent event Forecast Green Acres Mall squarefoot
Subsequent events |  |  |  |  |  |  |
Property square footage |  |  | 1,481,000 | 1,196,000 |  | 1,200,000 | 1,800,000
Voting interest acquired (as a percent) |  |  | 75.00% | 33.30% |  |  |
Purchase price on acquisition |  |  | $ 195,900 | $ 144,400 |  | $ 751,000 | $ 500,000
Option to receive purchase price as unrestricted common shares |  |  |  |  |  |  | 30,000
Purchase price funded by cash payment on acquisition |  |  |  | 69,026 |  |  |
Purchase price paid through assumption of mortgage notes payable | $ 192,566 |  | $ 126,795 | $ 75,374 |  |  |
Dividend/distribution for common stockholders and OP Unit holders (in dollars per share) |  | $ 0.58 |  |  |  |  |
Percentage of dividend/distribution payable in cash |  |  |  |  | 100.00% |  |

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- Definition The portion of the cost of the acquired entity that may be paid as restricted shares of the acquirer's common stock, at the seller's option. + References No definition available. + Details
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- Definition Amount of cash paid to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph f(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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