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Reportable Segments (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Reporting [Abstract] |
Schedule of Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations | The following table presents a reconciliation of NOI from our rental real estate specific to continuing operations for the years ended December 31, 2018, 2017 and 2016, respectively (amounts in thousands):
|  | Year Ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Rental income |  | $ | 2,577,681 |  |  | $ | 2,470,689 |  |  | $ | 2,422,233 |
Property and maintenance expense |  |  | (429,335 | ) |  |  | (405,281 | ) |  |  | (406,823 | )
Real estate taxes and insurance expense |  |  | (357,814 | ) |  |  | (335,495 | ) |  |  | (317,387 | )
Total operating expenses |  |  | (787,149 | ) |  |  | (740,776 | ) |  |  | (724,210 | )
Net operating income |  | $ | 1,790,532 |  |  | $ | 1,729,913 |  |  | $ | 1,698,023 |
Schedule of NOI for Each Segment from Rental Real Estate Specific to Continuing Operations | The following tables present NOI for each segment from our rental real estate specific to continuing operations for the years ended December 31, 2018, 2017 and 2016, respectively, as well as total assets and capital expenditures at December 31, 2018 and 2017, respectively (amounts in thousands):
|  | Year Ended December 31, 2018 |  |  | Year Ended December 31, 2017 |  |  | Year Ended December 31, 2016 |
|  | Rental Income |  |  | Operating Expenses |  |  | NOI |  |  | Rental Income |  |  | Operating Expenses |  |  | NOI |  |  | Rental Income |  |  | Operating Expenses |  |  | NOI |
Same store (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Los Angeles |  | $ | 416,688 |  |  | $ | 119,473 |  |  | $ | 297,215 |  |  | $ | 402,192 |  |  | $ | 114,055 |  |  | $ | 288,137 |  |  | $ | 382,425 |  |  | $ | 111,055 |  |  | $ | 271,370 |
Orange County |  |  | 91,650 |  |  |  | 22,071 |  |  |  | 69,579 |  |  |  | 88,527 |  |  |  | 21,544 |  |  |  | 66,983 |  |  |  | 84,590 |  |  |  | 20,600 |  |  |  | 63,990 |
San Diego |  |  | 91,971 |  |  |  | 24,023 |  |  |  | 67,948 |  |  |  | 88,507 |  |  |  | 23,073 |  |  |  | 65,434 |  |  |  | 84,646 |  |  |  | 22,366 |  |  |  | 62,280 |
Subtotal - Southern California |  |  | 600,309 |  |  |  | 165,567 |  |  |  | 434,742 |  |  |  | 579,226 |  |  |  | 158,672 |  |  |  | 420,554 |  |  |  | 551,661 |  |  |  | 154,021 |  |  |  | 397,640 |
San Francisco |  |  | 442,773 |  |  |  | 105,686 |  |  |  | 337,087 |  |  |  | 430,501 |  |  |  | 108,689 |  |  |  | 321,812 |  |  |  | 371,633 |  |  |  | 90,393 |  |  |  | 281,240 |
Washington D.C. |  |  | 434,545 |  |  |  | 134,427 |  |  |  | 300,118 |  |  |  | 430,060 |  |  |  | 129,720 |  |  |  | 300,340 |  |  |  | 424,350 |  |  |  | 126,154 |  |  |  | 298,196 |
New York |  |  | 458,366 |  |  |  | 181,040 |  |  |  | 277,326 |  |  |  | 454,945 |  |  |  | 170,064 |  |  |  | 284,881 |  |  |  | 456,664 |  |  |  | 159,302 |  |  |  | 297,362 |
Boston |  |  | 229,079 |  |  |  | 63,348 |  |  |  | 165,731 |  |  |  | 223,595 |  |  |  | 60,931 |  |  |  | 162,664 |  |  |  | 225,014 |  |  |  | 62,650 |  |  |  | 162,364 |
Seattle |  |  | 196,479 |  |  |  | 55,165 |  |  |  | 141,314 |  |  |  | 191,074 |  |  |  | 52,470 |  |  |  | 138,604 |  |  |  | 168,975 |  |  |  | 46,255 |  |  |  | 122,720 |
Other Markets |  |  | 1,940 |  |  |  | 657 |  |  |  | 1,283 |  |  |  | 1,839 |  |  |  | 652 |  |  |  | 1,187 |  |  |  | 1,797 |  |  |  | 567 |  |  |  | 1,230 |
Total same store |  |  | 2,363,491 |  |  |  | 705,890 |  |  |  | 1,657,601 |  |  |  | 2,311,240 |  |  |  | 681,198 |  |  |  | 1,630,042 |  |  |  | 2,200,094 |  |  |  | 639,342 |  |  |  | 1,560,752 |
Non-same store/other (2) (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-same store |  |  | 190,814 |  |  |  | 63,907 |  |  |  | 126,907 |  |  |  | 95,016 |  |  |  | 30,742 |  |  |  | 64,274 |  |  |  | 117,143 |  |  |  | 41,877 |  |  |  | 75,266 |
Other (3) |  |  | 23,376 |  |  |  | 17,352 |  |  |  | 6,024 |  |  |  | 64,433 |  |  |  | 28,836 |  |  |  | 35,597 |  |  |  | 104,996 |  |  |  | 42,991 |  |  |  | 62,005 |
Total non-same store/other |  |  | 214,190 |  |  |  | 81,259 |  |  |  | 132,931 |  |  |  | 159,449 |  |  |  | 59,578 |  |  |  | 99,871 |  |  |  | 222,139 |  |  |  | 84,868 |  |  |  | 137,271 |
Totals |  | $ | 2,577,681 |  |  | $ | 787,149 |  |  | $ | 1,790,532 |  |  | $ | 2,470,689 |  |  | $ | 740,776 |  |  | $ | 1,729,913 |  |  | $ | 2,422,233 |  |  | $ | 724,210 |  |  | $ | 1,698,023 |
(1) | For the years ended December 31, 2018 and 2017, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2017, less properties subsequently sold, which represented 71,721 apartment units. For the year ended December 31, 2016, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2016, less properties subsequently sold, which represented 70,117 apartment units.
(2) | For the years ended December 31, 2018 and 2017, non-same store primarily includes properties acquired after January 1, 2017, plus any properties in lease-up and not stabilized as of January 1, 2017. For the year ended December 31, 2016, non-same store primarily includes properties acquired after January 1, 2016, plus any properties in lease-up and not stabilized as of January 1, 2016.
(3) | Other includes development, other corporate operations and operations prior to disposition for properties sold.
|  | Year Ended December 31, 2018 |  |  | Year Ended December 31, 2017 |
|  | Total Assets |  |  | Capital Expenditures |  |  | Total Assets |  |  | Capital Expenditures |
Same store (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Los Angeles |  | $ | 2,608,347 |  |  | $ | 28,306 |  |  | $ | 2,692,602 |  |  | $ | 26,921 |
Orange County |  |  | 318,472 |  |  |  | 8,192 |  |  |  | 328,593 |  |  |  | 9,237 |
San Diego |  |  | 405,449 |  |  |  | 4,525 |  |  |  | 421,267 |  |  |  | 4,922 |
Subtotal - Southern California |  |  | 3,332,268 |  |  |  | 41,023 |  |  |  | 3,442,462 |  |  |  | 41,080 |
San Francisco |  |  | 2,967,735 |  |  |  | 44,837 |  |  |  | 3,039,552 |  |  |  | 38,618 |
Washington D.C. |  |  | 3,702,368 |  |  |  | 29,616 |  |  |  | 3,803,185 |  |  |  | 35,423 |
New York |  |  | 4,063,568 |  |  |  | 23,472 |  |  |  | 4,160,603 |  |  |  | 30,403 |
Boston |  |  | 1,589,000 |  |  |  | 24,623 |  |  |  | 1,636,925 |  |  |  | 28,687 |
Seattle |  |  | 1,277,865 |  |  |  | 17,825 |  |  |  | 1,316,678 |  |  |  | 21,646 |
Other Markets |  |  | 12,781 |  |  |  | 163 |  |  |  | 12,768 |  |  |  | 103 |
Total same store |  |  | 16,945,585 |  |  |  | 181,559 |  |  |  | 17,412,173 |  |  |  | 195,960 |
Non-same store/other (2) (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-same store |  |  | 2,940,770 |  |  |  | 6,665 |  |  |  | 2,276,312 |  |  |  | 3,704 |
Other (3) |  |  | 507,854 |  |  |  | 277 |  |  |  | 882,114 |  |  |  | 2,943 |
Total non-same store/other |  |  | 3,448,624 |  |  |  | 6,942 |  |  |  | 3,158,426 |  |  |  | 6,647 |
Totals |  | $ | 20,394,209 |  |  | $ | 188,501 |  |  | $ | 20,570,599 |  |  | $ | 202,607 |
(1) | Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2017, less properties subsequently sold, which represented 71,721 apartment units.
(2) | Non-same store primarily includes properties acquired after January 1, 2017, plus any properties in lease-up and not stabilized as of January 1, 2017.
(3) | Other includes development, other corporate operations and capital expenditures for properties sold.

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