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COMMITMENTS AND CONTINGENCIES (Details)	1 Months Ended	12 Months Ended
	Nov. 30, 2015 manager	Dec. 28, 2016 USD ($)	Dec. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Litigation Settlement, Expense		$ 20,000
Percentage of tax benefits due to equity owners		85.00%
Tax receivable agreement liability		$ 272,482,000
Letter of credit
Loss Contingencies [Line Items]
Renewal term		1 year
Retail site
Loss Contingencies [Line Items]
Letters of credit outstanding		$ 160,000
Office building
Loss Contingencies [Line Items]
Letters of credit outstanding			$ 80,000
Former Shake Shack Manager Litigation
Loss Contingencies [Line Items]
Number of former Shake Shack managers | manager	2
Settlement agreement amount funded		750,000
Liability recognized from settlement		$ 770,000
IPO
Loss Contingencies [Line Items]
Percentage of tax benefits due to equity owners		85.00%

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Amount of loss contingency liability.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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