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Segment Reporting (Tables)
 12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Summary of Operating Activity of Reportable Segments
The table below presents the operating activity of our reportable segments:

(In thousands)
Year Ended December 31,
 
2018
 
2017
 
2016
Office Segment
 
 
 
 
 
Total office revenues
$
777,931

 
$
715,546

 
$
645,633

Office expenses
(252,751
)
 
(233,633
)
 
(214,546
)
Office segment profit
525,180

 
481,913

 
431,087

 
 
 
 
 
 
Multifamily Segment
 
 
 
 
 
Total multifamily revenues
103,385

 
96,506

 
96,918

Multifamily expenses
(28,116
)
 
(24,401
)
 
(23,317
)
Multifamily segment profit
75,269

 
72,105

 
73,601

 
 
 
 
 
 
Total profit from all segments
$
600,449

 
$
554,018

 
$
504,688
Reconciliation of Segment Profit to Net Loss Attributable to Common Stockholders
The table below presents a reconciliation of the total profit from all segments to net income attributable to common stockholders:
 
(In thousands)
Year Ended December 31,
 
2018
 
2017
 
2016
 
 
 
 
 
 
Total profit from all segments
$
600,449

 
$
554,018

 
$
504,688

General and administrative
(38,641
)
 
(36,234
)
 
(34,957
)
Depreciation and amortization
(309,864
)
 
(276,761
)
 
(248,914
)
Other income
11,414

 
9,712

 
8,759

Other expenses
(7,472
)
 
(7,037
)
 
(9,477
)
Income, including depreciation, from unconsolidated real estate funds
6,400

 
5,905

 
7,812

Interest expense
(133,402
)
 
(145,176
)
 
(146,148
)
Demolition expenses
(272
)
 
—

 
—

Income before gains
128,612

 
104,427

 
81,763

Gains on sales of investments in real estate
—

 
—

 
14,327

Net income
128,612

 
104,427

 
96,090

   Less: Net income attributable to noncontrolling interests
(12,526
)
 
(9,984
)
 
(10,693
)
Net income attributable to common stockholders
$
116,086

 
$
94,443

 
$
85,397