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PROPERTY AND EQUIPMENT, NET (Tables) | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Schedule of Estimated Useful Lives for Property and Equipment | We provide for depreciation and amortization primarily using the straight-line method by charges to the consolidated statements of income in amounts that allocate the cost of property and equipment over their estimated useful lives as follows:
Asset Classification |  | Estimated Useful Life
Buildings and improvements |  | 10 to 40 years
Leasehold improvements |  | Shorter of remaining lease term or useful life of improvements
Machinery and equipment |  | 3 to 8 years
Office furniture and equipment |  | 3 to 7 years
Computer hardware and software |  | 3 to 7 years
Schedule of Property and Equipment | Property and equipment, net, consisted of the following:
(in thousands) |  | December 31, 2023 |  | December 31, 2022
Land and improvements |  | $ | 22,400 |  |  | $ | 22,221 |
Buildings and improvements |  | 432,038 |  |  | 356,049 |
Leasehold improvements |  | 116,347 |  |  | 107,251 |
Machinery and equipment |  | 431,914 |  |  | 404,963 |
Office furniture and equipment |  | 78,941 |  |  | 71,625 |
Computer hardware and software |  | 326,295 |  |  | 295,969 |
Construction in progress |  | 79,059 |  |  | 97,310 |
|  | 1,486,994 |  |  | 1,355,388 |
Less accumulated depreciation and amortization |  | 784,817 |  |  | 705,914 |
Total property and equipment, net |  | $ | 702,177 |  |  | $ | 649,474 |
Schedule of Depreciation and Amortization, Capitalized Computer Software for Internal Use and Unpaid Property Equipment Reflected in Accounts Payable and Accrued Expenses | Below are the amounts of depreciation and amortization of property and equipment, capitalized computer software for internal use, unpaid property and equipment reflected in accounts payable and accrued expenses, and rental and reagent rental program instruments transferred from inventory to property and equipment:
|  | For the Years Ended December 31,
(in thousands) |  | 2023 |  | 2022 |  | 2021
Depreciation and amortization expense |  | $ | 100,994 |  |  | $ | 96,746 |  |  | $ | 92,376 |
Capitalization of internal-use software development costs during the period |  | $ | 37,120 |  |  | $ | 20,329 |  |  | $ | 14,753 |
Unpaid property and equipment, reflected in accounts payable and accrued liabilities at end of year |  | $ | 12,061 |  |  | $ | 18,334 |  |  | $ | 19,326 |
Rental and operating-type reagent rental program instruments transferred from inventory to property and equipment during the period (Note 3) |  | $ | 14,608 |  |  | $ | 17,407 |  |  | $ | 11,628 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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