XML 47 R33.htm IDEA: XBRL DOCUMENT
v3.21.1

NATURE OF OPERATIONS (Details) | Mar. 31, 2021 Restaurant Shack
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Class of Stock [Line Items] |
Number of restaurants | 321
United States | Company-operated |
Class of Stock [Line Items] |
Number of restaurants | 192
United States | Licensed |
Class of Stock [Line Items] |
Number of restaurants | 22
Number of Shacks closed | Shack | 16
Non-United States | Licensed |
Class of Stock [Line Items] |
Number of restaurants | 107

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- Definition COVID-19 Response, Number of Stores Temporarily Closed + References No definition available. + Details
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