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v3.19.3

Basis of Presentation (Textual) (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 15, 2019 USD ($) | Jan. 01, 2019 USD ($) | Jan. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) $ / shares | Sep. 30, 2019 USD ($) lease acquisition $ / shares | Sep. 30, 2018 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Mar. 15, 2017 USD ($) ft²
Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |
Number of acquisitions for which adjustments have been made to correct errors related to of purchase price allocation | acquisition |  |  |  |  |  | 2 |  |  |  |
Net income attributable to Brandywine Realty Trust |  |  |  | $ 6,772 | $ (43,180) | $ 17,500 | $ 13,637 |  |  |
Cumulative effect of accounting change |  | $ 5,336 |  |  |  |  |  |  |  |
Number of long-term ground leases | lease |  |  |  |  |  | 6 |  |  |  |
Right of use asset - operating leases |  | 22,400 |  | 21,828 |  | $ 21,828 |  |  | $ 0 |
Lease liability - operating leases |  | $ 22,400 |  | $ 22,503 |  | 22,503 |  |  | $ 0 |
Proceeds from the sale of properties |  |  |  |  |  | $ 41,546 | 16,771 |  |  |
Philadelphia Marine Center (Marine Piers) |  |  |  |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |
Rentable area (in square feet) | ft² |  |  |  |  |  |  |  |  |  | 181,900
Total sale price for property sold |  |  |  |  |  |  |  |  |  | $ 21,400
Initial cash consideration for property sold |  |  |  |  |  |  |  |  |  | 12,000
Proceeds from the sale of properties | $ 11,200 |  |  |  |  |  |  |  |  |
Unrecorded gain receivable on property sold |  |  |  |  |  |  |  | $ 9,400 |  | $ 9,400
Uncollectible Leases |  |  |  |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative effect of accounting change |  |  | $ 700 |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments |  |  |  |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |
Net income attributable to Brandywine Realty Trust |  |  |  |  | $ (300) |  | $ (800) |  |  |
Net income per share amount (in dollars per share) | $ / shares |  |  |  |  | $ 0 | $ (0.01) |  |  |  |

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