Stock Repurchased During Period, Convertible Preferred Stock, Retained Earnings (Accumulated Deficit)

No definition available.

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Balance Type:	credit
Period Type:	duration

- Definition

Temporary Equity, Shares Repurchased, Purchase Price

+ References

No definition available.

+ Details

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

- Definition

Temporary Equity, Shares Repurchased, Purchase Price, Per Share

+ References

No definition available.

+ Details

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Namespace Prefix:	pgny_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of temporary equity repurchased during period.

+ References

No definition available.

+ Details

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Namespace Prefix:	pgny_
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- Definition

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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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Period Type:

- Details

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Period Type:

Related Party Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended
	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Repurchase of Preferred Stock (in shares)		1,202,196
Difference between the purchase price and the carrying value		$ 425
Share price (in dollars per share)		$ 1.49
Series B Preferred Stock
Related Party Transaction [Line Items]
Share price (in dollars per share)	$ 1.73		$ 1.73
Former employee \| Series B Preferred Stock
Related Party Transaction [Line Items]
Repurchase of Preferred Stock (in shares)	1,202,196
Purchase price	$ 2,500
Difference between the purchase price and the carrying value	$ 425
Purchase price (in dollars per share)	$ 2.04