Mergers and Acquisitions - Schedule of Proforma Revenue and Net (Loss) Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 27, 2020	Dec. 29, 2019
Fog Cutter Capital Group Inc [Member]
Total revenues	$ 18,118	$ 22,505
Net (loss) income	(14,626)	(7,872)
Johnny Rockets [Member]
Total revenues	23,863	38,216
Net (loss) income	$ (15,260)	$ 4,971

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration