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Related-Party Transactions: (Tables) | 12 Months Ended
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Dec. 31, 2014
Related Party Transactions [Abstract] |
Schedule of fees charged to unconsolidated joint ventures | The following are fees charged to unconsolidated joint ventures for the years ended December 31:
| 2014 |  | 2013 |  | 2012
Management fees | $ | 18,705 |  |  | $ | 21,993 |  |  | $ | 24,007 |
Development and leasing fees | 11,822 |  |  | 10,859 |  |  | 13,165 |
| $ | 30,527 |  |  | $ | 32,852 |  |  | $ | 37,172 |

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- Definition Tabular disclosure of revenue derived from management, development and leasing fees charged to unconsolidated joint ventures and third-party managed properties. + References No definition available. + Details
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