Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands |
Mack-Cali Realty LP [Member]
General Partner Common Units [Member]
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Mack-Cali Realty LP [Member]
Limited Partner Common Units/Vested LTIP Units [Member]
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Mack-Cali Realty LP [Member]
General Partner Common Unitholders [Member]
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Mack-Cali Realty LP [Member]
Limited Partner Common Unitholders [Member]
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Mack-Cali Realty LP [Member]
Noncontrolling Interest In Consolidated Joint Ventures [Member]
Noncontrolling Interests In Subsidiaries [Member]
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Mack-Cali Realty LP [Member]
Noncontrolling Interest In Consolidated Joint Ventures [Member]
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Mack-Cali Realty LP [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
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Mack-Cali Realty LP [Member] |
General Partner Common Unitholders [Member] |
Common Stock [Member] |
Additional Paid-In Capital [Member] |
Dividends In Excess Of Net Earnings [Member] |
Accumulated Other Comprehensive Income (Loss) [Member] |
Noncontrolling Interests In Subsidiaries [Member] |
Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance, value at Dec. 31, 2019 | $ 906 | $ 2,535,440 | $ (1,042,629) | $ (18) | $ 205,776 | $ 1,699,475 | |||||||||
| Balance, shares at Dec. 31, 2019 | 90,595,000 | ||||||||||||||
| Balance, value at Dec. 31, 2019 | $ 1,427,568 | $ 224,629 | $ 47,296 | $ (18) | $ 1,699,475 | ||||||||||
| Balance, units at Dec. 31, 2019 | 90,595,000 | 9,612,000 | |||||||||||||
| Net income (loss) | (117,019) | (12,390) | 17,513 | (111,896) | (117,019) | 5,123 | (111,896) | ||||||||
| Common stock dividends | (36,261) | (36,261) | |||||||||||||
| Common unit distributions | (36,261) | (3,509) | (39,770) | $ (36,261) | (3,509) | (3,509) | |||||||||
| Redeemable noncontrolling interests | (7,207) | (763) | (19,413) | (27,383) | (7,207) | (20,176) | (27,383) | ||||||||
| Change in noncontrolling interests in consolidated joint ventures | 133 | 133 | 133 | 133 | |||||||||||
| Redemption of common units for common stock, value | $ 160 | ||||||||||||||
| Redemption of common units, value | $ (100) | $ (2,170) | (2,170) | (2,170) | (2,170) | ||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, value | $ 3 | 39 | 39 | 39 | 39 | ||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, shares | 3,000 | ||||||||||||||
| Directors' deferred compensation plan, value | $ 61 | $ 215 | $ 215 | 215 | $ 61 | 214 | 215 | ||||||||
| Directors' deferred compensation plan, shares | 1,000 | ||||||||||||||
| Stock compensation, value | $ 53 | 1,158 | 4,534 | 5,692 | |||||||||||
| Stock compensation, value | 53,000 | 1,158,000 | 4,534,000 | 5,692,000 | |||||||||||
| Cancellation of restricted shares, value | $ (201) | $ (201) | (201) | (201) | |||||||||||
| Other comprehensive income (loss) | (34) | $ 18 | (16) | 18 | $ 18 | (34) | (16) | ||||||||
| Rebalancing of ownership percentage between parent and subsidiaries | 1,478 | 1,478 | (1,478) | ||||||||||||
| Balance, value at Sep. 30, 2020 | $ 907 | 2,531,122 | (1,195,909) | 187,998 | 1,524,118 | ||||||||||
| Balance, shares at Sep. 30, 2020 | 90,712,000 | ||||||||||||||
| Balance, value at Sep. 30, 2020 | $ 1,268,493 | 210,096 | 45,529 | $ 45,529 | 1,524,118 | ||||||||||
| Balance, units at Sep. 30, 2020 | 90,712,000 | 9,672,000 | |||||||||||||
| Balance, value at Jun. 30, 2020 | $ 906 | 2,533,686 | (1,135,559) | 194,463 | 1,593,496 | ||||||||||
| Balance, shares at Jun. 30, 2020 | 90,597,000 | ||||||||||||||
| Balance, value at Jun. 30, 2020 | 1,330,531 | 216,541 | 46,424 | 1,593,496 | |||||||||||
| Balance, units at Jun. 30, 2020 | 90,597,000 | 9,586,000 | |||||||||||||
| Net income (loss) | (42,208) | (4,486) | 5,576 | (41,118) | (42,208) | 1,090 | (41,118) | ||||||||
| Common stock dividends | (18,142) | (18,142) | |||||||||||||
| Common unit distributions | (18,142) | (2,029) | (20,171) | (18,142) | (2,029) | (2,029) | |||||||||
| Redeemable noncontrolling interests | (2,167) | (230) | (6,471) | (8,868) | (2,167) | (6,701) | (8,868) | ||||||||
| Vested LTIP units, shares | 88,000 | ||||||||||||||
| Redemption of common units, value | (29) | (29) | (29) | (29) | |||||||||||
| Redemption of common units, shares | (2,000) | ||||||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, value | 9 | 9 | 9 | 9 | |||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, shares | 1,000 | 1,000 | |||||||||||||
| Directors' deferred compensation plan, value | 76 | 76 | 76 | $ 1 | 75 | 76 | |||||||||
| Directors' deferred compensation plan, shares | 61,000 | 61,000 | |||||||||||||
| Stock compensation, value | 394 | 329 | 723 | 394 | 329 | 723 | |||||||||
| Stock compensation, shares | 53,000 | 53,000 | |||||||||||||
| Rebalancing of ownership percentage between parent and subsidiaries | (875) | (875) | 875 | ||||||||||||
| Balance, value at Sep. 30, 2020 | $ 907 | 2,531,122 | (1,195,909) | 187,998 | 1,524,118 | ||||||||||
| Balance, shares at Sep. 30, 2020 | 90,712,000 | ||||||||||||||
| Balance, value at Sep. 30, 2020 | 1,268,493 | 210,096 | $ 45,529 | 45,529 | 1,524,118 | ||||||||||
| Balance, units at Sep. 30, 2020 | 90,712,000 | 9,672,000 | |||||||||||||
| Balance, value at Dec. 31, 2020 | $ 907 | 2,528,187 | (1,130,277) | 193,563 | 1,592,380 | ||||||||||
| Balance, shares at Dec. 31, 2020 | 90,712,000 | ||||||||||||||
| Balance, value at Dec. 31, 2020 | 1,330,048 | 217,560 | 44,772 | 1,592,380 | |||||||||||
| Balance, units at Dec. 31, 2020 | 90,712,000 | 9,649,000 | |||||||||||||
| Net income (loss) | (92,770) | (9,275) | 15,743 | (86,302) | (92,770) | 6,468 | (86,302) | ||||||||
| Common unit distributions | 643 | 643 | 643 | 643 | |||||||||||
| Redeemable noncontrolling interests | (4,903) | (489) | (19,413) | (24,805) | (4,903) | (19,902) | (24,805) | ||||||||
| Change in noncontrolling interests in consolidated joint ventures | 197 | 197 | 197 | 197 | |||||||||||
| Vested LTIP units, value | $ 267 | ||||||||||||||
| Redemption of common units for common stock, value | 2,716 | (2,716) | 2,716 | $ 2 | 2,714 | (2,716) | |||||||||
| Redemption of common units for common stock, shares | 175,000 | (175,000) | 175,000 | ||||||||||||
| Redemption of common units, value | $ (11,164) | (11,164) | (11,164) | (11,164) | |||||||||||
| Redemption of common units, shares | (720,000) | ||||||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, value | 33 | 33 | 33 | 33 | |||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, shares | 2,000 | 2,000 | |||||||||||||
| Directors' deferred compensation plan, value | $ 229 | $ 229 | 229 | 229 | 229 | ||||||||||
| Stock compensation, value | 3,517 | 4,462 | 7,979 | ||||||||||||
| Stock compensation, shares | 58,000 | ||||||||||||||
| Stock compensation, value | 58,000 | 3,517,000 | 4,462,000 | 7,979,000 | |||||||||||
| Cancellation of common stock, value | (118) | (118) | $ (118) | ||||||||||||
| Cancellation of common stock, shares | 394,625 | ||||||||||||||
| Cancellation of restricted shares, value | $ (118) | $ (118) | |||||||||||||
| Rebalancing of ownership percentage between parent and subsidiaries | 504 | 504 | (504) | ||||||||||||
| Balance, value at Sep. 30, 2021 | $ 909 | 2,530,163 | (1,223,047) | 171,047 | $ 1,479,072 | ||||||||||
| Balance, shares at Sep. 30, 2021 | 90,947,000 | ||||||||||||||
| Balance, value at Sep. 30, 2021 | 1,238,752 | $ 199,021 | 41,299 | 1,479,072 | |||||||||||
| Balance, units at Sep. 30, 2021 | 90,947,000 | 9,021,000 | |||||||||||||
| Balance, value at Jun. 30, 2021 | $ 909 | 2,529,050 | (1,194,733) | 175,107 | 1,510,333 | ||||||||||
| Balance, shares at Jun. 30, 2021 | 90,947,000 | ||||||||||||||
| Balance, value at Jun. 30, 2021 | 1,266,901 | 201,008 | 42,424 | 1,510,333 | |||||||||||
| Balance, units at Jun. 30, 2021 | 90,947,000 | 9,038,000 | |||||||||||||
| Net income (loss) | (28,314) | (2,812) | 5,334 | (25,792) | (28,314) | 2,522 | (25,792) | ||||||||
| Redeemable noncontrolling interests | (1,562) | (155) | (6,471) | (8,188) | (1,562) | (6,626) | (8,188) | ||||||||
| Change in noncontrolling interests in consolidated joint ventures | 12 | 12 | 12 | 12 | |||||||||||
| Redemption of common units, value | (295) | (295) | (295) | (295) | |||||||||||
| Redemption of common units, shares | (17,000) | ||||||||||||||
| Shares issued under Dividend Reinvestment and Stock Purchase Plan, value | 4 | 4 | 4 | 4 | |||||||||||
| Directors' deferred compensation plan, value | 91 | 91 | 91 | 91 | 91 | ||||||||||
| Stock compensation, value | 1,632 | 1,275 | 2,907 | 1,632 | 1,275 | 2,907 | |||||||||
| Rebalancing of ownership percentage between parent and subsidiaries | $ 948 | 948 | (948) | ||||||||||||
| Balance, value at Sep. 30, 2021 | $ 909 | $ 2,530,163 | $ (1,223,047) | $ 171,047 | $ 1,479,072 | ||||||||||
| Balance, shares at Sep. 30, 2021 | 90,947,000 | ||||||||||||||
| Balance, value at Sep. 30, 2021 | $ 1,238,752 | $ 199,021 | $ 41,299 | $ 1,479,072 | |||||||||||
| Balance, units at Sep. 30, 2021 | 90,947,000 | 9,021,000 |