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Threshold period of accounts receivable aging as defined in the loan agreement to be considered as eligible accounts receivable.

No definition available.

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Line of Credit Facility, Commitment Fee Installment Amount

No definition available.

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Data Type:	xbrli:monetaryItemType
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Line of Credit Facility, Commitment Fee Payment, Number of Installments

No definition available.

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Data Type:	xbrli:integerItemType
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount of the fee for available but unused credit capacity under the credit facility.

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Description of when the fee for available but unused credit capacity is required to be paid (for example, annually, quarterly, or monthly).

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ShortTermDebtLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Namespace Prefix:
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Period Type:

Name:	us-gaap_DebtInstrumentAxis=pgny_SiliconValleyBankRevolvingLineOfCreditMember
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Data Type:	na
Balance Type:
Period Type:

Name:	srt_StatementScenarioAxis=pgny_UnrestrictedCashBalanceGreaterThan5MillionInterestAccruesMember
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