Segment Reporting During the six months ended June30, 2020 and 2019 , the Company operated in three reportable business segments for management and internal financial reporting purposes: MOBs, triple-net leased healthcare facilities, and SHOPs. The Company evaluates performance and makes resource allocations based on its three business segments. The medical office building segment primarily consists of MOBs leased to healthcare-related tenants under long-term leases, which may require such tenants to pay a pro rata share of property-related expenses. The triple-net leased healthcare facilities segment primarily consists of investments in seniors housing properties, hospitals, inpatient rehabilitation facilities and skilled nursing facilities under long-term leases, under which tenants are generally responsible to directly pay property-related expenses. The SHOP segment consists of direct investments in seniors housing properties, primarily providing assisted living, independent living and memory care services, which are operated through engaging independent third-party operators. There were no intersegment sales or transfers during the periods presented. As described in more detail below, on April 1, 2019 the Company transitioned one property located in Wellington, Florida (the Transition Property) from its triple-net leased healthcare facilities segment to its Seniors Housing  Operating Properties segment. See Note 3  Real Estate Investments for further information about this property and the transition. The results of operations from the Transition Property are presented within the Seniors Housing  Operating Properties segment for and six months ended June30, 2020 and 2019 . In 2018, we had also transitioned (i.e. this asset is now operating as a SHOP asset and is not leased to a third party) a property located in Lutz, Florida from our triple-net leased healthcare facilities segment to our SHOP segment. The results of this property had previously been reclassified in our Same Store operating results in 2018 and, according, require no additional adjustment in 2019. On July 1, 2020, the Company transitioned the LaSalle Properties from the triple-net leased healthcare facilities segment to the SHOP segment, and the LaSalle Properties are now leased to one of the Company's TRSs and operated and managed on the Company's behalf by a third-party operator. This segment change will be applied retrospectively to historical periods starting with the quarter ending September 30, 2020. As of June, 30, 2020 the LaSalle Properties are reported in the triple-net segment. Net Operating Income The Company evaluates the performance of the combined properties in each segment based on net operating income (NOI). NOI is defined as total revenues from tenants less property operating and maintenance expense. NOI excludes all other items of expense and income included in the financial statements in calculating net income (loss). The Company uses NOI to assess and compare property level performance and to make decisions concerning the operation of the properties. The Company believes that NOI is useful as a performance measure because, when compared across periods, NOI reflects the impact on operations from trends in occupancy rates, rental rates, operating expenses and acquisition activity on an unleveraged basis, providing perspective not immediately apparent from net income (loss). NOI excludes certain components from net income (loss) in order to provide results that are more closely related to a property's results of operations. For example, interest expense is not necessarily linked to the operating performance of a real estate asset and is often incurred at the corporate level. In addition, depreciation and amortization, because of historical cost accounting and useful life estimates, may distort operating performance at the property level. NOI presented by the Company may not be comparable to NOI reported by other REITs that define NOI differently. The Company believes that in order to facilitate a clear understanding of the Company's operating results, NOI should be examined in conjunction with net income (loss) as presented in the Company's consolidated financial statements. NOI should not be considered as an alternative to net income (loss) as an indication of the Company's performance or to cash flows as a measure of the Company's liquidity or ability to pay distributions. The following tables reconcile the segment activity, adjusted for the Transition Property to consolidated net loss for the periods presented:   Three Months Ended June 30,  Six Months Ended June 30,   2020  2020 (In thousands)  Medical Office Buildings  Triple-Net Leased Healthcare Facilities (1)  Seniors Housing  Operating Properties (1)  Consolidated  Medical Office Buildings  Triple-Net Leased Healthcare Facilities (1)  Seniors Housing  Operating Properties (1)  Consolidated Revenue from tenants  $ 25,788  $ 5,218  $ 63,658  $ 94,664  $ 52,160  $ 9,929  $ 132,810  $ 194,899 Property operating and maintenance  7,430  2,588  49,770  59,788  15,040  4,062  102,409  121,511 NOI  $ 18,358  $ 2,630  $ 13,888  34,876  $ 37,120  $ 5,867  $ 30,401  73,388 Impairment charges        (13,793 )        (31,831 ) Operating fees to related parties        (5,936 )        (11,985 ) Acquisition and transaction related        (178 )        (505 ) General and administrative        (4,730 )        (11,460 ) Depreciation and amortization        (20,183 )        (40,378 ) Interest expense        (12,580 )        (25,837 ) Interest and other income        36        41 Gain on sale of real estate investments                2,306 Gain on non-designated derivatives        8        24 Income tax benefit (expense)        332         Net loss attributable to non-controlling interests        87        174 Preferred stock dividends        (750 )        (1,492 ) Net loss attributable to stockholders        $ (22,811 )        $ (47,555 ) _________ (1) The results of operations from the Transition Property are presented within the Seniors Housing  Operating Properties segment for the six months ended June30, 2020 .   Three Months Ended June 30,  Six Months Ended June 30,   2019  2019 (In thousands)  Medical Office Buildings  Triple-Net Leased Healthcare Facilities (1)  Seniors Housing  Operating Properties (1)  Consolidated  Medical Office Buildings  Triple-Net Leased Healthcare Facilities (1)  Seniors Housing  Operating Properties (1)  Consolidated Revenue from tenants  $ 25,066  $ 3,462  $ 67,759  $ 96,287  $ 50,324  $ 6,997  $ 127,684  $ 185,005 Property operating and maintenance  8,021  388  50,395  58,804  14,968  799  95,836  111,603 NOI  $ 17,045  $ 3,074  $ 17,364  37,483  $ 35,356  $ 6,198  $ 31,848  73,402 Impairment charges        (19 )        (19 ) Operating fees to related parties        (5,826 )        (11,594 ) Acquisition and transaction related        (31 )        (49 ) General and administrative        (4,314 )        (10,612 ) Depreciation and amortization        (20,299 )        (40,984 ) Interest expense        (12,806 )        (26,749 ) Interest and other income                4 Gain on sale of real estate investment                6,078 Loss on non-designated derivative instruments        (5 )        (48 ) Income tax benefit (expense)        (297 )        (635 ) Net income attributable to non-controlling interests        60        41 Net loss attributable to stockholders        $ (6,054 )        $ (11,165 ) _______________ (1) The results of operations from the Transition Property are presented within the Seniors Housing  Operating Properties segment for the six months ended June30, 2019 . The following table reconciles the segment activity to consolidated total assets as of the periods presented: (In thousands)  June30, 2020  December31, 2019 ASSETS     Investments in real estate, net:     Medical office buildings  $ 895,253  $ 891,477 Triple-net leased healthcare facilities (1)  291,184  305,250 Seniors housing  operating properties (1)  966,361  856,864 Total investments in real estate, net  2,152,798  2,053,591 Assets held for sale  10,788  70,839 Cash and cash equivalents  83,525  95,691 Restricted cash  16,248  15,908 Derivative assets, at fair value  74  392 Straight-line rent receivable, net  22,867  21,182 Operating lease right-of-use assets  14,319  14,351 Prepaid expenses and other assets  35,893  39,707 Deferred costs, net  13,937  13,642 Total assets  $ 2,350,449  $ 2,325,303 ______________________  (1) The Transition Property is presented within the Seniors Housing  Operating Properties segment as of June30, 2020 and December31, 2019 . (2) Included in the triple net leased healthcare facilities segment. The following table reconciles capital expenditures by reportable business segment, excluding corporate non-real estate expenditures, for the periods presented:   Three Months Ended June 30,  Six Months Ended June 30, (In thousands)  2020  2019  2020  2019 Medical office buildings  $ 511  $ 1,537  $ 2,812  $ 1,734 Triple-net leased healthcare facilities  7    3,692  17 Seniors housing  operating properties (1)  2,148  2,865  7,260  4,416 Total capital expenditures  $ 2,666  $ 4,402  $ 13,764  $ 6,167 ______________________  (1) The results of operations from the Transition Property are presented within the Seniors Housing  Operating Properties segment for the three and six months ended June30, 2020 and 2019 .