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Nature of the Business (Details)	6 Months Ended
	Jun. 30, 2023 item
Nature of the Business
Number of collaborations	2

X

- Definition

The number of agreements or collaborations.

+ References

No definition available.

+ Details

Name:	srrk_NumberOfAgreements
Namespace Prefix:	srrk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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