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v3.21.2

Significant Accounting Policies - Cost of Services (Details) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Contract Term, Clinics, Low End of Range | 1 year
Contract Term, Clinics, High End of Range | 2 years

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- Definition Contract Term, Clinics, High End of Range + References No definition available. + Details
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Namespace Prefix: | pgny_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Contract Term, Clinics, Low End of Range + References No definition available. + Details
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Namespace Prefix: | pgny_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration