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LEASES - Narrative (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Leases [Abstract]
Operating lease for non-cancellable leases	$ 222,129

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- Definition

Operating Lease For Non-Cancellable Leases

+ References

No definition available.

+ Details

Name:	shak_OperatingLeaseForNonCancellableLeases
Namespace Prefix:	shak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

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