Segment Reporting We invest in seniors housing and health care real estate. We evaluate our business and make resource allocations on our three operating segments: Seniors Housing Operating, Triple-net and Outpatient Medical. Our Seniors Housing Operating properties include seniors apartments, assisted living, independent living/continuing care retirement communities, independent support living (Canada), care homes with and without nursing (U.K.) and combinations thereof that are owned and/or operated through RIDEA structures (see Note 19 ). Our Triple-net properties include the property types described above as well as long-term/post-acute care facilities. Under the Triple-net segment, we invest in seniors housing and health care real estate through acquisition and financing of primarily single tenant properties. Properties acquired are primarily leased under triple-net leases and we are not involved in the management of the property. Our Outpatient Medical properties include outpatient medical buildings which are typically leased to multiple tenants and generally require a certain level of property management by us. We evaluate performance based upon NOI of each segment. We define NOI as total revenues, including tenant reimbursements, less property operating expenses. We believe NOI provides investors relevant and useful information because it measures the operating performance of our properties at the property level on an unleveraged basis. We use NOI to make decisions about resource allocations and to assess the property level performance of our properties. Non-segment revenue consists mainly of interest income on certain non-real estate investments and other income. Non-segment assets consist of corporate assets including cash, deferred loan expenses and corporate offices and equipment among others. Non-property specific revenues and expenses are not allocated to individual segments in determining NOI. The accounting policies of the segments are the same as those described in the summary of significant accounting policies (see Note 2 ). The results of operations for all acquisitions described in Note 3 are included in our consolidated results of operations from the acquisition dates and are components of the appropriate segments. There are no intersegment sales or transfers. Summary information for the reportable segments (which excludes unconsolidated entities) during the years ended December 31, 2019 , 2018 and 2017 is as follows (in thousands): Year Ended December 31, 2019: Seniors Housing Operating Triple-net Outpatient Medical Non-segment / Corporate Total Resident fees and services $ 3,448,175 $  $  $  $ 3,448,175 Rental income  903,798 684,602  1,588,400 Interest income 36 62,599 1,195  63,830 Other income 8,658 6,246 2,031 3,966 20,901 Total revenues 3,456,869 972,643 687,828 3,966 5,121,306 Property operating expenses 2,417,349 53,900 218,793  2,690,042 Consolidated net operating income 1,039,520 918,743 469,035 3,966 2,431,264 Depreciation and amortization 553,189 232,626 241,258  1,027,073 Interest expense 67,983 12,892 13,411 461,273 555,559 General and administrative expenses    126,549 126,549 Loss (gain) on derivatives and financial instruments, net  (4,399 )   (4,399 ) Loss (gain) on extinguishment of debt, net 1,614   82,541 84,155 Provision for loan losses  18,690   18,690 Impairment of assets 2,145 11,926 14,062  28,133 Other expenses 26,348 13,771 1,788 10,705 52,612 Income (loss) from continuing operations before income taxes and other items 388,241 633,237 198,516 (677,102 ) 542,892 Income tax (expense) benefit 6,246 (4,209 ) (2,710 ) (2,284 ) (2,957 ) (Loss) income from unconsolidated entities 12,388 22,985 7,061  42,434 Gain (loss) on real estate dispositions, net 528,747 218,322 972  748,041 Income (loss) from continuing operations 935,622 870,335 203,839 (679,386 ) 1,330,410 Net income (loss) $ 935,622 $ 870,335 $ 203,839 $ (679,386 ) $ 1,330,410 Total assets $ 15,784,898 $ 9,434,817 $ 7,991,521 $ 169,515 $ 33,380,751 Year Ended December 31, 2018: Seniors Housing Operating Triple-net Outpatient Medical Non-segment / Corporate Total Resident fees and services $ 3,234,852 $  $  $  $ 3,234,852 Rental income  828,865 551,557  1,380,422 Interest income 578 54,926 310  55,814 Other income 5,024 17,173 4,939 2,275 29,411 Total revenues 3,240,454 900,964 556,806 2,275 4,700,499 Property operating expenses 2,255,432 915 176,670  2,433,017 Consolidated net operating income 985,022 900,049 380,136 2,275 2,267,482 Depreciation and amortization 529,449 235,480 185,530  950,459 Interest expense 69,060 14,225 7,051 436,256 526,592 General and administrative expenses    126,383 126,383 Loss (gain) on derivatives and financial instruments, net  (4,016 )   (4,016 ) Loss (gain) on extinguishment of debt, net 110 (32 ) 11,928 4,091 16,097 Impairment of assets 7,599 107,980   115,579 Other expenses 6,624 90,975 (1) 7,570 7,729 112,898 Income (loss) from continuing operations before income taxes and other items 372,180 455,437 168,057 (572,184 ) 423,490 Income tax (expense) benefit 1,202 1,611 (125 ) (11,362 ) (8,674 ) (Loss) income from unconsolidated entities (28,142 ) 21,938 5,563  (641 ) Gain (loss) on real estate dispositions, net (2,245 ) 196,589 221,231  415,575 Income (loss) from continuing operations 342,995 675,575 394,726 (583,546 ) 829,750 Net income (loss) $ 342,995 $ 675,575 $ 394,726 $ (583,546 ) $ 829,750 Total assets $ 14,607,127 $ 10,111,227 $ 5,426,810 $ 196,908 $ 30,342,072 (1) Represents non-capitalizable transaction costs of $81,116,000 primarily related to a joint venture transaction with an existing seniors housing operator including the conversion of properties from Triple-net to Seniors Housing Operating and termination/restructuring of preexisting relationships. Year Ended December 31, 2017: Seniors Housing Operating Triple-net Outpatient Medical Non-segment / Corporate Total Resident fees and services $ 2,779,423 $  $  $  $ 2,779,423 Rental income  885,811 560,060  1,445,871 Interest income 69 73,742   73,811 Other income 5,127 7,531 3,340 1,538 17,536 Total revenues 2,784,619 967,084 563,400 1,538 4,316,641 Property operating expenses 1,904,593  179,332  2,083,925 Consolidated net operating income 880,026 967,084 384,068 1,538 2,232,716 Depreciation and amortization 484,796 243,830 193,094  921,720 Interest expense 63,265 15,194 10,015 396,148 484,622 General and administrative    122,008 122,008 Loss (gain) on derivatives and financial instruments, net  2,284   2,284 Loss (gain) on extinguishment of debt, net 3,785 29,083 4,373  37,241 Provision for loan losses  62,966   62,966 Impairment of assets 21,949 96,909 5,625  124,483 Other expenses 8,347 116,689 (1) 1,911 50,829 (2) 177,776 Income (loss) from continuing operations before income taxes and other items 297,884 400,129 169,050 (567,447 ) 299,616 Income tax (expense) benefit (16,430 ) (4,291 ) (1,477 ) 2,070 (20,128 ) (Loss) income from unconsolidated entities (105,236 ) 19,428 2,683  (83,125 ) Gain (loss) on real estate dispositions, net 56,295 286,325 1,630  344,250 Income (loss) from continuing operations 232,513 701,591 171,886 (565,377 ) 540,613 Net income (loss) $ 232,513 $ 701,591 $ 171,886 $ (565,377 ) $ 540,613 (1) Primarily represents non-capitalizable transaction costs, including $ 88,316,000 due to a joint venture transaction with an existing seniors housing operator which converted a portfolio of properties from Triple-net to Seniors Housing Operating and termination/restructuring of preexisting relationships. Also includes $ 18,294,000 other-than-temporary impairment charge on the Genesis available-for-sale equity investment. (2) Primarily related to $ 40,730,000 expense recognized for the donation of the corporate headquarters. Our portfolio of properties and other investments are located in the U.S., the U.K. and Canada. Revenues and assets are attributed to the country in which the property is physically located. The following is a summary of geographic information for the periods presented (dollars in thousands): Year Ended December 31, 2019 December 31, 2018 December 31, 2017 Revenues: Amount (1) % Amount % Amount % United States $ 4,205,492 82.1 % $ 3,777,960 80.4 % $ 3,464,527 80.3 % United Kingdom 452,698 8.8 % 452,956 9.6 % 407,351 9.4 % Canada 463,116 9.1 % 469,583 10.0 % 444,763 10.3 % Total $ 5,121,306 100.0 % $ 4,700,499 100.0 % $ 4,316,641 100.0 % As of December 31, 2019 December 31, 2018 Assets: Amount % Amount % United States $ 27,513,911 82.4 % $ 24,884,292 82.0 % United Kingdom 3,405,388 10.2 % 3,078,994 10.1 % Canada 2,461,452 7.4 % 2,378,786 7.9 % Total $ 33,380,751 100.0 % $ 30,342,072 100.0 % (1) The United States, United Kingdom and Canada represent 77% , 10% and 13% , respectively, of our resident fees and services revenue stream for the year ended December 31, 2019.