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Consolidated Statements of Partners' Equity (USD $) In Thousands, except Share data | Total | Series D Preferred Mirror Units | Accumulated Other Comprehensive Income | Non-controlling Interest Consolidated Real Estate Ventures | BRANDYWINE OPERATING PARTNERSHIP, L.P. | BRANDYWINE OPERATING PARTNERSHIP, L.P. Series D Preferred Mirror Units | BRANDYWINE OPERATING PARTNERSHIP, L.P. Series E Preferred Mirror Units | BRANDYWINE OPERATING PARTNERSHIP, L.P. General Partner Capital | BRANDYWINE OPERATING PARTNERSHIP, L.P. Accumulated Other Comprehensive Income | BRANDYWINE OPERATING PARTNERSHIP, L.P. Non-controlling Interest Consolidated Real Estate Ventures | BRANDYWINE OPERATING PARTNERSHIP, L.P. Total partners equity
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2008 | $ 1,722,498 | $ 43 | $ (17,005) | $ 52,961 |  | $ 47,912 | $ 55,538 | $ 1,581,887 | $ (17,005) | $ 0 | $ 1,668,332
Beginning Balance, shares at Dec. 31, 2008 |  | 4,300,000 |  |  |  | 2,000,000 | 2,300,000 | 88,158,937 |  |  |
Net income (loss) | 8,089 |  |  | 63 | 8,089 |  |  | 8,059 |  | 30 | 8,089
Other comprehensive income | 7,086 |  | 7,376 | (290) | 7,086 |  |  |  | 7,086 |  | 7,086
Deferred compensation obligation |  |  |  |  |  |  |  | 131 |  |  | 131
Deferred compensation obligation, shares |  |  |  |  |  |  |  | 51,058 |  |  |
Issuance of LP Units |  |  |  |  |  |  |  | 242,323 |  |  | 242,323
Issuance of LP Units, shares |  |  |  |  |  |  |  | 40,250,000 |  |  |
Bonus share issuance | 123 |  |  |  |  |  |  | 123 |  |  | 123
Bonus share issuance, shares |  |  |  |  |  |  |  | 36,826 |  |  |
Conversion of LP Units to common shares | 0 |  |  | (254) |  |  |  | 254 |  |  | 254
Conversion of LP Units to common shares, shares |  |  |  |  |  |  |  | 7,513 |  |  |
Share choice plan | (46) |  |  |  |  |  |  | (46) |  |  | (46)
Share choice plan, shares |  |  |  |  |  |  |  | (7,081) |  |  |
Vesting of restricted units | (212) |  |  |  |  |  |  | (213) |  |  | (213)
Vesting of restricted units, shares |  |  |  |  |  |  |  | 86,172 |  |  |
Restricted stock amortization | 3,286 |  |  |  |  |  |  | 3,286 |  |  | 3,286
Restricted Performance units amortization | 288 |  |  |  |  |  |  | 288 |  |  | 288
Outperformance plan amortization | 927 |  |  |  |  |  |  | 927 |  |  | 927
Option amortization | 602 |  |  |  |  |  |  | 602 |  |  | 602
Trustee fees paid in shares |  |  |  |  |  |  |  | 152 |  |  | 152
Trustee fees paid in shares, shares |  |  |  |  |  |  |  | 13,987 |  |  |
Adjustment of redeemable partnership units to liquidation value at period end |  |  |  |  |  |  |  | 8,213 |  |  | 8,213
Adjustment to non-controlling interest |  |  |  |  |  |  |  |  |  | 35 | 35
Other | 678 |  | 491 |  |  |  |  |  | 491 |  | 491
Distributions to Preferred Mirror Units | (7,992) |  |  |  |  |  |  | (7,992) |  |  | (7,992)
Distributions to general partnership unitholder |  |  |  |  |  |  |  | (54,961) |  |  | (54,961)
Ending Balance at Dec. 31, 2009 | 1,921,740 | 43 | (9,138) | 38,308 |  | 47,912 | 55,538 | 1,783,033 | (9,428) | 65 | 1,877,120
Ending Balance, shares at Dec. 31, 2009 |  | 4,300,000 |  |  |  | 2,000,000 | 2,300,000 | 128,597,412 |  |  |
Net income (loss) | (17,606) |  |  | (532) | (17,606) |  |  | (17,606) |  |  | (17,606)
Other comprehensive income | 7,348 |  | 7,193 | 155 | 7,348 |  |  |  | 7,348 |  | 7,348
Deferred compensation obligation |  |  |  |  |  |  |  | 0 |  |  | 0
Deferred compensation obligation, shares |  |  |  |  |  |  |  | 2,409 |  |  |
Issuance of LP Units |  |  |  |  |  |  |  | 71,981 |  |  | 71,981
Issuance of LP Units, shares |  |  |  |  |  |  |  | 5,742,268 |  |  |
Bonus share issuance | 369 |  |  |  |  |  |  | 369 |  |  | 369
Bonus share issuance, shares |  |  |  |  |  |  |  | 32,607 |  |  |
Conversion of LP Units to common shares |  |  |  | (466) |  |  |  | 466 |  |  | 466
Conversion of LP Units to common shares, shares |  |  |  |  |  |  |  | 17,468 |  |  |
Vesting of restricted units | (227) |  |  |  |  |  |  | (227) |  |  | (227)
Vesting of restricted units, shares |  |  |  |  |  |  |  | 76,598 |  |  |
Restricted stock amortization | 3,483 |  |  |  |  |  |  | 3,483 |  |  | 3,483
Restricted Performance units amortization | 965 |  |  |  |  |  |  | 965 |  |  | 965
Outperformance plan amortization | 380 |  |  |  |  |  |  | 380 |  |  | 380
Option amortization | 1,131 |  |  |  |  |  |  | 1,132 |  |  | 1,132
Trustee fees paid in shares |  |  |  |  |  |  |  | 98 |  |  | 98
Trustee fees paid in shares, shares |  |  |  |  |  |  |  | 8,412 |  |  |
Exercise of options |  |  |  |  |  |  |  | 12,761 |  |  |
Exercise of options, shares | 37 |  |  |  |  |  |  | 37 |  |  | 37
Adjustment of redeemable partnership units to liquidation value at period end |  |  |  |  |  |  |  | (13,839) |  |  | (13,839)
Adjustment to non-controlling interest |  |  |  |  |  |  |  |  |  | (27) | (27)
Cumulative effect of accounting change for variable interest entities | 1,401 |  |  | (38) |  |  |  | 1,439 |  | (38) | 1,401
Distributions to Preferred Mirror Units | (7,992) |  |  |  |  |  |  | (7,992) |  |  | (7,992)
Distributions to general partnership unitholder |  |  |  |  |  |  |  | (80,170) |  |  | (80,170)
Ending Balance at Dec. 31, 2010 | 1,977,774 | 43 | (1,945) | 128,272 |  | 47,912 | 55,538 | 1,743,549 | (2,080) | 0 | 1,844,919
Ending Balance, shares at Dec. 31, 2010 |  | 4,300,000 |  |  |  | 2,000,000 | 2,300,000 | 134,485,117 |  |  |
Net income (loss) | (4,715) |  |  | (215) | (4,715) |  |  | (4,715) |  |  | (4,715)
Other comprehensive income | (4,346) |  | (4,134) | (212) | (4,346) |  |  |  | (4,346) |  | (4,346)
Deferred compensation obligation |  |  |  |  |  |  |  | (16) |  |  | (16)
Deferred compensation obligation, shares |  |  |  |  |  |  |  | 845 |  |  |
Issuance of LP Units |  |  |  |  |  |  |  | 8,272 |  |  | 8,272
Issuance of LP Units, shares |  |  |  |  |  |  |  | 679,285 |  |  |
Bonus share issuance | 6 |  |  |  |  |  |  | 6 |  |  | 6
Bonus share issuance, shares |  |  |  |  |  |  |  | 463 |  |  |
Conversion of LP Units to common shares | 0 |  |  | (86,038) |  |  |  | 86,038 |  |  | 86,038
Conversion of LP Units to common shares, shares |  |  |  |  |  |  |  | 7,204,104 |  |  |
Share choice plan | (55) |  |  |  |  |  |  | (55) |  |  | (55)
Share choice plan, shares |  |  |  |  |  |  |  | (1,684) |  |  |
Common partnership units cancellation |  |  |  |  |  |  |  | 0 | 0 | 0 | 0
Common partnership units cancellation, shares |  |  |  |  |  |  |  | 0 |  |  |
Vesting of restricted units | (350) |  |  |  |  |  |  | (352) |  |  | (352)
Vesting of restricted units, shares |  |  |  |  |  |  |  | 201,464 |  |  |
Restricted stock amortization | 2,937 |  |  |  |  |  |  | 2,937 |  |  | 2,937
Restricted Performance units amortization | 1,679 |  |  |  |  |  |  | 1,679 |  |  | 1,679
Outperformance plan amortization | 123 |  |  |  |  |  |  | 123 |  |  | 123
Option amortization | 1,487 |  |  |  |  |  |  | 1,487 |  |  | 1,487
Trustee fees paid in shares |  |  |  |  |  |  |  | 32 |  |  | 32
Trustee fees paid in shares, shares |  |  |  |  |  |  |  | 2,672 |  |  |
Exercise of options | 120,180 |  |  |  |  |  |  | 120,179 |  |  |
Exercise of options, shares | 350 |  |  |  |  |  |  | 350 |  |  | 350
Adjustment of redeemable partnership units to liquidation value at period end |  |  |  |  |  |  |  | 5,778 |  |  | 5,778
Distributions to Preferred Mirror Units | (7,992) |  |  |  |  |  |  | (7,992) |  |  | (7,992)
Distributions to general partnership unitholder |  |  |  |  |  |  |  | (82,819) |  |  | (82,819)
Ending Balance at Dec. 31, 2011 | $ 1,889,696 | $ 43 | $ (6,079) | $ 33,105 |  | $ 47,912 | $ 55,538 | $ 1,754,302 | $ (6,426) | $ 0 | $ 1,851,326
Ending Balance, shares at Dec. 31, 2011 |  | 4,300,000 |  |  |  | 2,000,000 | 2,300,000 | 142,690,755 |  |  |

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