Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Revenues:
Total revenues	$ 515,008	$ 460,623	$ 1,026,754	$ 870,482
Costs and expenses:
General and administrative expenses	53,698	48,428	103,709	96,079
Depreciation and amortization	12,477	12,377	25,353	24,672
Total costs and expenses	470,371	430,089	935,255	824,476
Operating income	44,637	30,534	91,499	46,006
Net interest expense	(3,649)	(3,627)	(7,296)	(7,594)
Income before income taxes	40,988	26,907	84,203	38,412
Income tax expense	7,398	4,956	15,330	7,468
Net income before attribution to noncontrolling interests	33,590	21,951	68,873	30,944
Net income attributable to noncontrolling interests	(1,336)	(1,337)	(2,736)	(1,887)
Net income attributable to the Company	32,254	20,614	66,137	29,057
Calculation of net (loss) income for earnings per share:
Net income attributable to the Company	32,254	20,614	66,137	29,057
Dividends on redemption of Series B Convertible Preferred Stock	(109,852)		(109,852)
Dividends paid to participating securities	(2,300)	(3,347)	(5,827)	(6,818)
Net income attributable to participating securities		(1,560)		(1,306)
Net (loss) income attributable to common shareholders	$ (79,898)	$ 15,707	$ (49,542)	$ 20,933
Basic (loss) earnings per common share	$ (2.30)	$ 0.49	$ (1.47)	$ 0.65
Diluted (loss) earnings per common share	$ (2.30)	$ 0.48	$ (1.47)	$ 0.65
Basic weighted average common shares outstanding	34,729	32,335	33,739	32,214
Diluted weighted average common shares outstanding	34,729	32,619	33,739	32,444
Dividends declared per common share	$ 0.225	$ 0.225	$ 0.450	$ 0.450
Domestic Company-owned restaurants
Revenues:
Total revenues	$ 196,124	$ 186,506	$ 393,358	$ 347,946
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	154,293	145,168	310,181	274,279
North America franchising
Revenues:
Total revenues	32,475	24,174	65,190	43,614
North America commissary
Revenues:
Total revenues	186,641	167,619	371,519	323,041
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	172,227	154,467	342,911	298,739
International
Revenues:
Total revenues	37,614	28,093	72,221	54,152
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	21,430	18,304	41,048	33,405
Other segment
Revenues:
Total revenues	62,154	54,231	124,466	101,729
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	$ 56,246	$ 51,345	$ 112,053	$ 97,302