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- Definition

Number of franchise brands.

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Number of franchise units worldwide.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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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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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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- Definition

The number of countries in which the entity operates as of balance sheet date.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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Number of shares of preferred stock issued as dividends during the period. Excludes stock splits.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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MERGERS AND ACQUISITIONS - Narrative (Details) $ / shares in Units, location in Thousands, $ in Thousands					9 Months Ended
	Jul. 22, 2021 USD ($) franchise country shares	Jun. 22, 2021	Dec. 10, 2020 USD ($) $ / shares shares	Sep. 21, 2020 USD ($)	Sep. 26, 2021 franchise location $ / shares	Dec. 27, 2020 $ / shares
Business Acquisition [Line Items]
Number of franchise brands \| franchise					14
Number of franchise units worldwide \| location					2
Preferred stock, liquidation preference (in dollars per share) \| $ / shares					$ 25	$ 25
Series B Cumulative Preferred Stock
Business Acquisition [Line Items]
Dividend rate on preferred stock		8.25%	8.25%
Preferred stock, liquidation preference (in dollars per share) \| $ / shares			$ 25.00
GFG Holdings Inc
Business Acquisition [Line Items]
Purchase price of business	$ 444,500
Cash payment to acquire business	355,200
Value of equity interests related to put/call agreement	$ 67,500
Number of franchise brands \| franchise	5
Number of franchise units worldwide \| franchise	1,450
Number of countries in which the company operates \| country	10
Net identifiable assets	$ 444,487
GFG Holdings Inc \| Series B Cumulative Preferred Stock
Business Acquisition [Line Items]
Equity consideration transferred (in shares) \| shares	3,089,245
GFG Holdings Inc \| Class A Shares
Business Acquisition [Line Items]
Equity consideration transferred (in shares) \| shares	1,964,865
Fog Cutter Capital Group Inc
Business Acquisition [Line Items]
Net identifiable assets			$ (47,483)
Johnny Rockets
Business Acquisition [Line Items]
Purchase price of business				$ 24,700
Net identifiable assets				$ 24,730
Merger Agreement \| Fog Cutter Capital Group Inc
Business Acquisition [Line Items]
Equity consideration transferred (in shares) \| shares			9,679,288
Merger Agreement \| Fog Cutter Capital Group Inc \| Series B Cumulative Preferred Stock
Business Acquisition [Line Items]
Preferred stock dividends (in shares) \| shares			0.2319998077