Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Net Income Available To Common Shareholders) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Segment Reporting Information [Line Items] | |||||||||||
| Net operating income | $ 171,972 | $ 213,813 | $ 216,835 | ||||||||
| Depreciation and amortization | (174,847) | (205,169) | (186,684) | ||||||||
| Land Impairments | (24,566) | ||||||||||
| Gain on change of control of interests | 14,217 | 15,347 | |||||||||
| Realized gains (losses) and unrealized losses on disposition of rental property, net | 99,436 | 2,364 | 109,666 | ||||||||
| Gain on disposition of developable land | 30,939 | ||||||||||
| Gain on sale of investment in unconsolidated joint venture | 23,131 | 5,670 | |||||||||
| Loss from extinguishment of debt, net | (10,750) | (421) | (30,540) | ||||||||
| Net income | $ 52,523 | $ 1,689 | $ 1,501 | $ 50,688 | $ 5,411 | $ 44,703 | $ (39,125) | $ 22,729 | 106,401 | 33,718 | 130,294 |
| Noncontrolling interest in consolidated joint ventures | 1,216 | 1,018 | 651 | ||||||||
| Noncontrolling interest in Operating Partnership | (9,527) | (2,711) | (13,721) | ||||||||
| Redeemable noncontrolling interest | (13,979) | (8,840) | |||||||||
| Net income available to common shareholders | 43,804 | (1,478) | (1,251) | 43,036 | 2,582 | 38,054 | (37,330) | 19,879 | 84,111 | 23,185 | 117,224 |
| Mack-Cali Realty LP [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net operating income | 171,972 | 213,813 | 216,835 | ||||||||
| Depreciation and amortization | (174,847) | (205,169) | (186,684) | ||||||||
| Land Impairments | (24,566) | ||||||||||
| Gain on change of control of interests | 14,217 | 15,347 | |||||||||
| Realized gains (losses) and unrealized losses on disposition of rental property, net | 99,436 | 2,364 | 109,666 | ||||||||
| Gain on disposition of developable land | 30,939 | ||||||||||
| Gain on sale of investment in unconsolidated joint venture | 23,131 | 5,670 | |||||||||
| Loss from extinguishment of debt, net | (10,750) | (421) | (30,540) | ||||||||
| Net income | 52,523 | 1,689 | 1,501 | 50,688 | 5,411 | 44,703 | (39,125) | 22,729 | 106,401 | 33,718 | 130,294 |
| Noncontrolling interest in consolidated joint ventures | 1,216 | 1,018 | 651 | ||||||||
| Redeemable noncontrolling interest | (13,979) | (8,840) | |||||||||
| Net income available to common shareholders | $ 48,757 | $ (1,645) | $ (1,393) | $ 47,919 | $ 2,881 | $ 42,467 | $ (41,626) | $ 22,174 | $ 93,638 | $ 25,896 | $ 130,945 |
| X | ||||||||||
- Definition Gain (Loss) On Change Of Control Of Interests No definition available.
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- Definition Noncontrolling Interest, Redemption Value Adjustment, Redeemable No definition available.
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- Definition Segment Reporting Information, Net Operating Income (Loss) For Reportable Segment No definition available.
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after tax of income (loss) attributable to nonredeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) attributable to nonredeemable noncontrolling partner in an operating partnership. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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