Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Revenue
Total revenue	$ 29,761,000	$ 4,089,000	$ 44,693,000	$ 11,619,000
Costs and expenses
General and administrative expense	12,966,000	2,990,000	23,375,000	10,626,000
Restaurant operating expenses	3,660,000	0	3,904,000	0
Factory operating expenses	3,473,000	0	3,473,000	0
Impairment of assets	0	753,000	0	3,927,000
Refranchising (gain) loss	(250,000)	325,000	(679,000)	1,869,000
Acquisition costs	2,053,000	503,000	2,985,000	633,000
Advertising expense	5,483,000	814,000	8,043,000	2,358,000
Total costs and expenses	27,385,000	5,385,000	41,101,000	19,413,000
Income (loss) from operations	2,376,000	(1,296,000)	3,592,000	(7,794,000)
Other income (expense), net
Interest expense, net of interest income of $836 and $1,554 due from affiliates during the thirteen and thirty-nine weeks ended September 27, 2020, respectively. There was no interest income earned from affiliates in 2021.	(7,072,000)	(123,000)	(11,939,000)	(2,034,000)
Interest expense related to preferred shares	(173,000)	(323,000)	(725,000)	(1,251,000)
Net loss on extinguishment of debt	(13,000)	(88,000)	(6,418,000)	(88,000)
Change in fair value of derivative liability	0	(374,000)	0	887,000
Gain on contingent consideration payable adjustment	0	1,680,000	0	1,680,000
Other income (expense), net	64,000	(63,000)	189,000	6,000
Total other (expense) income, net	(7,194,000)	709,000	(18,893,000)	(800,000)
Loss before income tax expense	(4,818,000)	(587,000)	(15,301,000)	(8,594,000)
Income tax benefit	(1,183,000)	(19,000)	(3,303,000)	(1,405,000)
Net loss	(3,635,000)	(568,000)	(11,998,000)	(7,189,000)
Less: Net loss attributable to noncontrolling interest	(14,000)	0	(19,000)	0
Net loss attributable to FAT Brands Inc.	$ (3,621,000)	$ (568,000)	$ (11,979,000)	$ (7,189,000)
Basic loss per common share (in dollars per share)	$ (0.26)	$ (0.04)	$ (0.85)	$ (0.55)
Diluted loss per common share (in dollars per share)	$ (0.26)	$ (0.04)	$ (0.85)	$ (0.55)
Basic weighted average shares outstanding (in shares)	14,144,857	13,101,791	14,094,772	13,077,480
Diluted weighted average shares outstanding (in shares)	14,144,857	13,101,791	14,094,772	13,077,480
Cash dividends declared per common share (in dollars per share)	$ 0.13	$ 0	$ 0.39	$ 0
Royalty
Revenue
Total revenue	$ 13,742,000	$ 3,156,000	$ 24,800,000	$ 8,678,000
Franchisor
Revenue
Total revenue	1,087,000	122,000	2,109,000	571,000
Advertising
Revenue
Total revenue	5,483,000	803,000	8,043,000	2,347,000
Restaurant
Revenue
Total revenue	3,879,000	0	4,113,000	0
Factory
Revenue
Total revenue	5,480,000	0	5,480,000	0
Management Service
Revenue
Total revenue	$ 90,000	$ 8,000	$ 148,000	$ 23,000