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v3.21.2

Consolidated Variable Interest Entities (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) | Dec. 31, 2019 USD ($) ft² | Dec. 31, 2020 USD ($)
Consolidated Variable Interest Entities [Abstract] |  |  |
Total VIE assets | $ 5,754,072 |  | $ 5,209,417
Total VIE liabilities | 3,227,854 |  | 2,738,748
Assets and liabilities of consolidated variable interest entity [Abstract] |  |  |
Net real estate assets | 5,018,689 |  | 4,421,285
Deferred leasing costs, net | 267,405 |  | 209,329
Prepaid expense and other assets, net | 77,454 |  | 62,885
Accounts payable, accrued expenses and other liabilities | 284,952 |  | $ 268,727
PAC Acquisition Variable Interest Entities [Member] |  |  |
Consolidated Variable Interest Entities [Abstract] |  |  |
Total VIE assets | 669,600 |  |
Total VIE liabilities | 418,100 |  |
Total VIE cash flows from operations | 5,100 |  |
Consolidated Variable Interest Entities [Member] |  |  |
Consolidated Variable Interest Entities [Abstract] |  |  |
Rentable square feet of office property under development (in sq feet) | ft² |  | 150,000 |
Total anticipated development costs |  | $ 71,300 |
Contribution of cash to acquire interest in consolidated joint venture |  | $ 20,000 |
Interest in consolidated joint venture (in hundredths) |  | 80.00% |
Partner's contribution of property to acquire interest in consolidated joint venture |  | $ 5,000 |
Advance to consolidated affiliate |  | $ 46,300 |
Amount of loan funded to affiliate | 25,900 |  |
Assets and liabilities of consolidated variable interest entity [Abstract] |  |  |
Net real estate assets | 52,790 |  |
Deferred leasing costs, net | 1,934 |  |
Prepaid expense and other assets, net | 170 |  |
Accounts payable, accrued expenses and other liabilities | $ 1,771 |  |
Consolidated Variable Interest Entities [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Consolidated Variable Interest Entities [Abstract] |  |  |
Variable interest rate basis |  | LIBOR |
Interest rate, basis spread (in hundredths) |  | 2.50% |
Variable Interest Entity [Member] |  |  |
Consolidated Variable Interest Entities [Abstract] |  |  |
Partner's interest in consolidated joint venture (in hundredths) | 20.00% |  |
Variable Interest Entity [Member] | Consolidated Variable Interest Entities [Member] |  |  |
Consolidated Variable Interest Entities [Abstract] |  |  |
Partner's interest in consolidated joint venture (in hundredths) |  | 20.00% |

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