Description of Business - Additional Information (Details)	12 Months Ended
Dec. 30, 2020 restaurant segment
Debt Instrument [Line Items]
Number of operating segments \| segment	1
Philippines
Debt Instrument [Line Items]
Number of restaurants	1
Company-operated
Debt Instrument [Line Items]
Number of restaurants	196
Company-operated \| Greater Los Angeles area market
Debt Instrument [Line Items]
Number of restaurants	143
Franchised
Debt Instrument [Line Items]
Number of restaurants	283
Franchised \| Greater Los Angeles area market
Debt Instrument [Line Items]
Number of restaurants	136
Chicken Acquisition Corp
Debt Instrument [Line Items]
Ownership interest	46.00%

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration