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Label Element Value
Ventura County Imaging Group, LLC [Member]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment $ 4,300,000
Hudson Valley Radiology Associates [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]  
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned $ 6,000,000.0
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued 440,207,000