Fair Value Measurements (Quantitative Information About Significant Unobservable Inputs (Level 3) Used) (Details) (USD $) | 9 Months Ended | 12 Months Ended |
Sep. 30, 2013 | Dec. 31, 2012 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Fixed-Rate Debt [Member] | Minimum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 1.20% | | 1.10% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Fixed-Rate Debt [Member] | Maximum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 7.20% | | 6.50% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Variable-Rate Debt [Member] | Minimum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 0.80% | | 1.40% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Variable-Rate Debt [Member] | Maximum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 5.00% | | 5.00% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Notes Receivable From Real Estate Joint Ventures And Partnerships [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 2.70% | | 3.00% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Tax Increment Revenue Bonds [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | 7.50% | | 7.50% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Tax Increment Revenue Bonds [Member] | Minimum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Expected Future Inflation Rate | 1.00% | | 1.00% | |
Fair Value Input, Expected Future Growth Rate | 1.00% | | 1.00% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Tax Increment Revenue Bonds [Member] | Maximum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Expected Future Inflation Rate | 2.00% | | 2.00% | |
Fair Value Input, Expected Future Growth Rate | 2.00% | | 4.00% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Impaired Property [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Discount Rate | ' | | 10.00% | |
Fair Value Input, Holding Period (Years) | ' | | '1 year | |
Fair Value Input, Expected Future Inflation Rate | ' | | 3.00% | [1] |
Fair Value Input, Market Rent Growth Rate | ' | | 3.00% | [1] |
Fair Value Input, Expense Growth Rate | ' | | 3.00% | [1] |
Fair Value Input, Vacancy Rate | ' | | 5.00% | [1] |
Fair Value Input, Renewal Rate | ' | | 75.00% | [1] |
Fair Value Input, Market Rent Rate | ' | | 10.52 | [1] |
Fair Value Input, Leasing Costs Per Square Foot | ' | | 16.5 | [1] |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Impaired Property [Member] | Minimum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Market Capitalization Rate | ' | | 9.30% | |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flows [Member] | Impaired Property [Member] | Maximum [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Fair Value Input, Market Capitalization Rate | ' | | 9.50% | |
Fair Value, Measurements, Nonrecurring [Member] | Impaired Property [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Property | 11,876,000 | [2] | 19,679,000 | [3] |
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Property [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Property | 8,576,000 | [2] | 13,906,000 | [3] |
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Notes receivable from real estate joint ventures and partnerships | 85,897,000 | | 93,572,000 | |
Tax increment revenue bonds | 25,850,000 | | 26,505,000 | |
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fixed-Rate Debt [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Debt | 2,055,495,000 | | 2,094,122,000 | |
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Variable-Rate Debt [Member] | ' | | ' | |
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ' | | ' | |
Debt | 289,560,000 | | 223,759,000 | |
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[1] | Only applies to one property valuation. |
[2] | In accordance with our policy of evaluating and recording impairments on the disposal of long-lived assets, property with a carrying amount of $14.3 million was written down to a fair value of $11.9 million, resulting in a loss of $2.4 million, which was included in earnings for the period. Management’s estimate of the fair value of these properties was determined using bona fide purchase offer for the Level 2 inputs. See the quantitative information about the significant unobservable inputs used for our Level 3 fair value measurements table below. |
[3] | In accordance with our policy of evaluating and recording impairments on the disposal of long-lived assets, property with a carrying amount of $22.4 million was written down to a fair value of $19.7 million less costs to sell of $.3 million, resulting in a loss of $3.0 million, which was included in earnings for the period. Management’s estimate of fair value of these properties was determined using a bona fide purchase offer for the Level 2 inputs. See the quantitative information about the significant unobservable inputs used for our Level 3 fair value measurements table below. |