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Property, Plant and Equipment and Leasehold Intangibles, Net
 9 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment and Leasehold Intangibles, Net
5. Property, Plant and Equipment and Leasehold Intangibles, Net

As of September 30, 2024 and December 31, 2023, net property, plant and equipment and leasehold intangibles, which include assets under financing leases, consisted of the following.

(in thousands)September 30, 2024December 31, 2023
Land$497,829 $500,649 
Buildings and improvements5,391,214 5,348,133 
Furniture and equipment1,156,275 1,111,408 
Resident in-place lease intangibles281,041 282,411 
Construction in progress30,077 33,905 
Assets under financing leases and leasehold improvements1,557,995 1,070,900 
Property, plant and equipment and leasehold intangibles8,914,431 8,347,406 
Accumulated depreciation and amortization(4,273,176)(4,016,777)
Property, plant and equipment and leasehold intangibles, net$4,641,255 $4,330,629 
Long-lived assets with definite useful lives are depreciated or amortized on a straight-line basis over their estimated useful lives (or, in certain cases, the shorter of their estimated useful lives or the lease term) and are tested for impairment whenever indicators of impairment arise. The Company recognized depreciation and amortization expense on its property, plant and equipment and leasehold intangibles of $90.1 million and $85.9 million for the three months ended September 30, 2024 and 2023, respectively, and $264.2 million and $255.3 million for the nine months ended September 30, 2024 and 2023, respectively. The Company recognized $0.9 million and $2.6 million for the three and nine months ended September 30, 2024, respectively, of non-cash impairment charges in its operating results for its property, plant and equipment and leasehold
intangibles assets due to property damage sustained at certain communities. The Company recognized $5.3 million and $5.8 million for the three and nine months ended September 30, 2023, respectively, of non-cash impairment charges in its operating results for its property, plant and equipment and leasehold intangibles assets, primarily due to the planned disposition of certain underperforming communities that have since been sold.