Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Revenues:
Total revenues	$ 522,665	$ 515,008	$ 1,065,357	$ 1,026,754
Costs and expenses:
General and administrative expenses	44,646	53,698	110,584	103,709
Depreciation and amortization	12,735	12,477	24,674	25,353
Total costs and expenses	483,761	470,371	1,000,858	935,255
Refranchising and impairment loss	0	0	(11,160)	0
Operating income	38,904	44,637	53,339	91,499
Net interest expense	(6,081)	(3,649)	(10,344)	(7,296)
Income before income taxes	32,823	40,988	42,995	84,203
Income tax expense	7,093	7,398	5,838	15,330
Net income before attribution to noncontrolling interests	25,730	33,590	37,157	68,873
Net income attributable to noncontrolling interests	(297)	(1,336)	(1,230)	(2,736)
Net income attributable to the Company	25,433	32,254	35,927	66,137
Calculation of net income for earnings per share:
Net income attributable to the Company	25,433	32,254	35,927	66,137
Dividends on redemption of Series B Convertible Preferred Stock	0	(109,852)	0	(109,852)
Dividends paid to participating securities	(82)	(2,300)	(141)	(5,827)
Net income attributable to participating securities	(111)	0	(93)	0
Net income (loss) attributable to common shareholders	$ 25,240	$ (79,898)	$ 35,693	$ (49,542)
Basic earnings (loss) per common share (in dollars per share)	$ 0.71	$ (2.30)	$ 1.00	$ (1.47)
Diluted earnings (loss) per common share (in dollars per share)	$ 0.70	$ (2.30)	$ 0.99	$ (1.47)
Basic weighted average common shares outstanding (in shares)	35,624	34,729	35,775	33,739
Diluted weighted average common shares outstanding (in shares)	35,824	34,729	36,032	33,739
Dividends declared per common share (in dollars per share)	$ 0.350	$ 0.225	$ 0.700	$ 0.450
Domestic Company-owned restaurants
Revenues:
Total revenues	$ 171,411	$ 196,124	$ 370,176	$ 393,358
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	142,026	154,293	303,687	310,181
North America franchising
Revenues:
Total revenues	34,917	32,475	69,185	65,190
North America commissaries
Revenues:
Total revenues	219,383	186,641	429,062	371,519
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	204,470	172,227	401,560	342,911
International
Revenues:
Total revenues	31,958	37,614	66,575	72,221
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	19,236	21,430	39,150	41,048
Other
Revenues:
Total revenues	64,996	62,154	130,359	124,466
Costs and expenses:
Operating costs (excluding depreciation and amortization shown separately below):	$ 60,648	$ 56,246	$ 121,203	$ 112,053