Segment Information | 16. We review operating and financial data for each property on an individual basis; therefore, each of our individual properties is a separate operating segment. We define our reportable segments to be aligned with our method of internal reporting and the way our Chief Executive Officer, who is also our Chief Operating Decision Maker ("CODM"), makes key operating decisions, evaluates financial results, allocates resources and manages our business. Accordingly, we aggregate our operating segments into three reportable segments (commercial, multifamily, and third-party asset management and real estate services) based on the economic characteristics and nature of our assets and services. To conform to the current period presentation, we have reclassified the prior period segment financial data for 1700 M Street, for which we are the ground lessor, that had been classified as part of the commercial segment to other to better align with our internal reporting. The CODM measures and evaluates the performance of our operating segments, with the exception of the third-party asset management and real estate services business, based on the net operating income ("NOI") of properties within each segment. NOI includes property rental revenue and parking revenue, and deducts property operating expenses and real estate taxes. With respect to the third-party asset management and real estate services business, the CODM reviews revenue streams generated by this segment ("Third-party real estate services, including reimbursements"), as well as the expenses attributable to the segment ("General and administrative: third-party real estate services"), which are both disclosed separately in our statements of operations. The following represents the components of revenue from our third-party asset management and real estate services business: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ 2022 2021 ​ (In thousands) Property management fees ​ $ 4,808 ​ $ 4,942 Asset management fees ​ 1,771 ​ 2,228 Development fees (1) ​ 3,539 ​ 14,250 Leasing fees ​ 1,839 ​ 860 Construction management fees ​ 150 ​ 172 Other service revenue ​ 816 ​ 1,698 Third-party real estate services revenue, excluding reimbursements ​ 12,923 ​ 24,150 Reimbursement revenue (2) ​ 11,047 ​ 13,957 Third-party real estate services revenue, including reimbursements ​ ​ 23,970 ​ ​ 38,107 Third-party real estate services expenses ​ ​ 27,049 ​ ​ 28,936 Third-party real estate services revenue less expenses ​ $ (3,079) ​ $ 9,171 ​ (1) As of March 31, 2022, we had estimated unrecognized development fee revenue totaling $45.2 million, of which $10.4 million, $12.0 million and $6.3 million is expected to be recognized during the remainder of 2022 , 2023 and 2024 , and $16.5 million is expected to be recognized thereafter through 2027 as unsatisfied performance obligations are completed. (2) Represents reimbursement of expenses incurred by us on behalf of third parties, including allocated payroll costs and amounts paid to third-party contractors for construction management projects. Management company assets primarily consist of management and leasing contracts with a net book value of $18.1 million and $19.6 million as of March 31, 2022 and December 31, 2021, which are classified in "Intangible assets, net" in our balance sheets. Consistent with internal reporting presented to our CODM and our definition of NOI, the third-party asset management and real estate services operating results are excluded from the NOI data below. The following is the reconciliation of net loss attributable to common shareholders to consolidated NOI: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ 2022 2021 ​ (In thousands) Net loss attributable to common shareholders ​ $ (32) ​ $ (20,731) Add: ​ ​ Depreciation and amortization expense ​ 58,062 ​ 64,726 General and administrative expense: ​ ​ Corporate and other ​ 15,815 ​ 12,475 Third-party real estate services ​ 27,049 ​ 28,936 Share-based compensation related to Formation Transaction and special equity awards ​ 2,244 ​ 4,945 Transaction and other costs ​ 899 ​ 3,690 Interest expense ​ 16,278 ​ 16,296 Loss on the extinguishment of debt ​ 591 ​ — Income tax expense (benefit) ​ (471) ​ 4,315 Net income (loss) attributable to redeemable noncontrolling interests ​ 10 ​ (2,230) Net loss attributable to noncontrolling interests ​ ​ (55) ​ ​ (1,108) Less: ​ ​ Third-party real estate services, including reimbursements revenue ​ 23,970 ​ 38,107 Other revenue ​ 2,196 ​ 2,186 Income (loss) from unconsolidated real estate ventures, net ​ 3,145 ​ (943) Interest and other income, net ​ 14,246 ​ 9 Loss on the sale of real estate ​ (136) ​ — Consolidated NOI ​ $ 76,969 ​ $ 71,955 ​ The following is a summary of NOI by segment. Items classified in the Other column include future development assets, assets ground leased to third parties, corporate entities and the elimination of inter-segment activity. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2022 ​ Commercial Multifamily Other Total ​ (In thousands) Property rental revenue ​ $ 87,621 ​ $ 42,108 ​ $ 1,869 ​ $ 131,598 Parking revenue ​ 4,012 ​ 134 ​ 55 ​ 4,201 Total property revenue ​ 91,633 ​ 42,242 ​ 1,924 ​ 135,799 Property expense: ​ ​ ​ ​ ​ Property operating ​ 26,202 ​ 13,755 ​ 687 ​ 40,644 Real estate taxes ​ 11,777 ​ 5,221 ​ 1,188 ​ 18,186 Total property expense ​ 37,979 ​ 18,976 ​ 1,875 ​ 58,830 Consolidated NOI ​ $ 53,654 ​ $ 23,266 ​ $ 49 ​ $ 76,969 ​ ​ Three Months Ended March 31, 2021 ​ Commercial Multifamily Other Total ​ ​ (In thousands) Property rental revenue ​ $ 87,181 ​ $ 32,586 ​ $ 2,474 ​ $ 122,241 Parking revenue ​ 2,690 ​ 65 ​ — ​ 2,755 Total property revenue ​ 89,871 ​ 32,651 ​ 2,474 ​ 124,996 Property expense: ​ ​ ​ ​ Property operating ​ 23,964 ​ 12,195 ​ (1,428) ​ 34,731 Real estate taxes ​ 11,772 ​ 5,245 ​ 1,293 ​ 18,310 Total property expense ​ 35,736 ​ 17,440 ​ (135) ​ 53,041 Consolidated NOI ​ $ 54,135 ​ $ 15,211 ​ $ 2,609 ​ $ 71,955 ​ The following is a summary of certain balance sheet data by segment: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Multifamily Other Total ​ ​ (In thousands) March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate, at cost ​ $ 2,674,939 ​ $ 2,434,441 ​ $ 420,245 ​ $ 5,529,625 Investments in unconsolidated real estate ventures ​ 280,913 ​ 111,920 ​ 68,611 ​ 461,444 Total assets ​ 3,594,436 ​ 1,836,526 ​ 884,918 ​ 6,315,880 December 31, 2021 ​ ​ ​ ​ Real estate, at cost ​ $ 3,422,278 ​ $ 2,367,712 ​ $ 446,486 ​ $ 6,236,476 Investments in unconsolidated real estate ventures ​ 281,515 ​ 103,389 ​ 77,981 ​ 462,885 Total assets ​ 3,591,839 ​ 1,797,807 ​ 996,560 ​ 6,386,206 ​ |