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REVENUE RECOGNITION
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
REVENUE RECOGITION REVENUE RECOGNITION
    DIS

    Net revenues in the Company’s DIS business accounted for over 97% of the Company’s total net revenues for the three and six months ended June 30, 2025 and 2024 and are primarily comprised of a high volume of relatively low-dollar transactions. The DIS business, which provides clinical testing services and other services, satisfies its performance obligations and recognizes revenues primarily upon completion of the testing process (when results are reported) or when services have been rendered. The Company estimates the amount of consideration it expects to be entitled to receive from payer customer groups in exchange for providing services using the portfolio approach. These estimates include the impact of contractual allowances (including payer denials), and patient price concessions. The portfolios determined using the portfolio approach consist of the following groups of payer customers: healthcare insurers, government payers (including Medicare and Medicaid programs), client payers and patients.

    For further details regarding revenue recognition in the Company's DIS business, see Note 3 to the audited consolidated financial statements in the Company's 2024 Annual Report on Form 10-K.
    DS

    The Company’s DS businesses primarily satisfy their performance obligations and recognize revenues when delivery has occurred or services have been rendered.

    Net Revenue and Net Accounts Receivable by Payer Customer Type

    The approximate percentage of net revenue by type of payer customer was as follows:
    
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
Healthcare insurers:
Fee-for-service37 %36 %36 %36 %
Capitated3 3 3 3 
Total healthcare insurers40 39 39 39 
Government payers (principally fee-for-service)16 11 16 12 
Client payers30 33 31 33 
Patients (including coinsurance and deductible responsibilities)12 14 12 13 
Total DIS98 97 98 97 
DS2 3 2 3 
Net revenues100 %100 %100 %100 %
    
    The approximate percentage of net accounts receivable by type of payer customer was as follows:
June 30, 2025December 31, 2024
Healthcare Insurers27 %26 %
Government Payers8 7 
Client Payers43 45 
Patients (including coinsurance and deductible responsibilities)20 20 
Total DIS98 98 
DS2 2 
Net accounts receivable100 %100 %