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Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands	3 Months Ended
	Dec. 31, 2021 USD ($)
2022 Offerings
Payment of issuance costs for at-the-market offerings and initial public offering	$ 598

X

- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=prax_A2022OfferingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: