Debt Instrument, Covenant Description, Maximum Leverage Ratio

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Debt Instrument, Restrictive Covenants, Maximum Annual Payment For Other Restricted Payments

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- Definition

Debt Instrument, Restrictive Covenants, Maximum Annual Payment For Stock Option Plans, Employment Agreements and Incentive Plans

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- Definition

Debt Instrument, Restrictive Covenants, Maximum Annual Redemption, Repurchase, Acquired Equity Interests

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- Definition

Debt Instrument, Restrictive Covenants, Maximum Annual Repurchase or Redemption of Qualified Entity Interests

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

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.

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Represents the number of restaurants.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Description of Business - Additional Information (Details)		3 Months Ended	12 Months Ended
	Dec. 11, 2014 USD ($)	Dec. 26, 2018 USD ($) restaurant shares	Dec. 26, 2018 USD ($) restaurant segment	Sep. 26, 2018 restaurant	Aug. 28, 2018 USD ($)	Jun. 27, 2018 restaurant	Mar. 28, 2018 restaurant	Dec. 27, 2017 restaurant	Sep. 27, 2017 restaurant	Jun. 28, 2017 restaurant	Mar. 29, 2017 restaurant	Dec. 28, 2016 restaurant
Debt Instrument [Line Items]
Number of restaurants \| restaurant		4	4					23				9
Number of operating segments \| segment			1
Authorized amount under share repurchase agreement					$ 20,000,000.0
Number of shares repurchased (shares) \| shares		66,409
Value of shares repurchased		$ 1,000,000	$ 981,000
Philippines
Debt Instrument [Line Items]
Number of restaurants \| restaurant		1	1
Company-operated
Debt Instrument [Line Items]
Number of restaurants \| restaurant		213	213	212		211	212	212	208	208	204
Company-operated \| The Greater Los Angeles Area
Debt Instrument [Line Items]
Number of restaurants \| restaurant		143	143
Franchised
Debt Instrument [Line Items]
Number of restaurants \| restaurant		271	271	271		269	268	265	265	264	263
Franchised \| The Greater Los Angeles Area
Debt Instrument [Line Items]
Number of restaurants \| restaurant		138	138
2018 Credit Agreement
Debt Instrument [Line Items]
Senior secured revolving facility	$ 150,000,000
Senior secured revolving facility term	5 years
Revolving Credit Facility \| 2018 Credit Agreement
Debt Instrument [Line Items]
Maximum annual repurchase or redemption of qualified entity interests			$ 1,000,000.0
Restrictive covenants, maximum annual repurchase, redemption or acquired equity interests, up to			500,000.0
Maximum annual payment for stock option plans, employment agreements and incentive plans			2,500,000.0
Maximum annual payment for other restricted payments			$ 5,000,000.0
Maximum leverage ratio			4.25
Chicken Acquisition Corp
Debt Instrument [Line Items]
Ownership interest		42.90%	42.90%