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PROPERTY AND EQUIPMENT, NET (Summary Of Depreciation And Amortization, Capitalized Computer Software For Internal Use And Unpaid Property Equipment Reflected In Account Payable And Accrued Expenses) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Property, Plant and Equipment [Line Items] |  |  |
Depreciation and amortization expense | $ 100,994 | $ 96,746 | $ 92,376
Unpaid property and equipment, reflected in accounts payable and accrued liabilities at end of year | 12,061 | 18,334 | 19,326
Reagent rental arrangements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Amount of rental and operating-type reagent rental program instruments transferred from inventory to property and equipment | 14,608 | 17,407 | 11,628
Capitalization of internal-use software development costs during the period |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalization of internal-use software development costs during the period | $ 37,120 | $ 20,329 | $ 14,753

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