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Accrued Professional Liabilities - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Payables and Accruals [Abstract] |  |
Total accrued professional liability | $ 315,900 | $ 249,600
Accrued professional liability incurred but loss reserves not reported for claims | 222,900 | 187,600
Accrued professional liability incurred and loss reserves reported for claims | 93,000 | 84,200
Accrued professional liabilities | 50,607 | $ 44,699
Insurance receivables | $ 61,400 |

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- Definition Accrued professional liability. + References No definition available. + Details
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Namespace Prefix: | md_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. + References No definition available. + Details
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- Definition Amount of the accrued liability on an undiscounted basis for malpractice claims (including general and professional liability) at the end of the accounting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant

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- Definition Amount of the current portion of the accrued liability on an undiscounted basis for malpractice claims (including general and professional liability). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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