Name:	pgny_DebtInstrumentAdvanceRateOnEligibleAccountsReceivable
Namespace Prefix:	pgny_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

No definition available.

Name:	pgny_DebtInstrumentThresholdPeriodOfAccountsReceivableAging
Namespace Prefix:	pgny_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Debt Instrument, Unrestricted Cash Balance to Determine Threshold for Interest Rate

No definition available.

Name:	pgny_DebtInstrumentUnrestrictedCashBalanceToDetermineThresholdForInterestRate
Namespace Prefix:	pgny_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Line of Credit Facility, Commitment Fee Installment Amount

No definition available.

Name:	pgny_LineOfCreditFacilityCommitmentFeeInstallmentAmount
Namespace Prefix:	pgny_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line of Credit Facility, Commitment Fee Payment, Number of Installments

No definition available.

Name:	pgny_LineOfCreditFacilityCommitmentFeePaymentNumberOfInstallments
Namespace Prefix:	pgny_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Payments for Line of Credit Facility Commitment Fee

No definition available.

Name:	pgny_PaymentsForLineOfCreditFacilityCommitmentFee
Namespace Prefix:	pgny_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Contractual interest rate for funds borrowed, under the debt agreement.

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

Name:	us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

Name:	us-gaap_LineOfCreditFacilityFrequencyOfCommitmentFeePayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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.

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

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Name:	us-gaap_ShortTermBorrowings
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
Balance Type:	na
Period Type:	duration

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	srt_StatementScenarioAxis=pgny_UnrestrictedCashBalanceGreaterThan5MillionInterestAccruesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_StatementScenarioAxis=pgny_UnrestrictedCashBalanceLessThan5MillionInterestAccruesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: