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Property and Equipment | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Property and Equipment | Property and equipment Property and equipment comprised the following:
| December 31,
| 2024 |  | 2023
Land | $ | 50,172 |  |  | $ | 35,216 |
Buildings | 428,994 |  |  | 436,460 |
Leasehold improvements | 4,180,747 |  |  | 4,058,987 |
Equipment and information systems, including internally developed software | 4,410,395 |  |  | 4,125,235 |
New center and capital asset projects in progress | 133,311 |  |  | 177,149 |
| 9,203,619 |  |  | 8,833,047 |
Less accumulated depreciation | (6,262,703) |  |  | (5,759,514) |
| $ | 2,940,916 |  |  | $ | 3,073,533 |
Depreciation and amortization expenses are computed using the straight-line method over the useful lives of the assets estimated as follows: buildings, 25 years to 40 years; leasehold improvements, the shorter of ten years or the expected lease term; and equipment and information systems, including internally developed software, principally three years to 15 years. Depreciation expense on property and equipment was $716,396, $736,474 and $721,133 for 2024, 2023 and 2022, respectively. Interest on debt incurred during the development of new centers and other capital asset projects is capitalized as a component of the asset cost based on the respective in-process capital asset balances. Interest capitalized was $7,978, $9,178 and $12,677 for 2024, 2023 and 2022, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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