Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Rental revenues	$ 116,491	$ 113,933	$ 105,939
Total revenues	909,402	896,167	689,268
Cost of revenues:
Franchise expenses	321,908	295,887	238,972
Bad debt expense (credit)	261	(4,928)	12,756
Company restaurant expenses	121,722	136,748	111,550
Interest expense from finance leases	2,962	3,446	4,563
Other rental expenses	85,033	84,397	84,939
Total rental expenses	87,995	87,843	89,502
Financing expenses	419	464	528
Total cost of revenues	532,044	520,942	440,552
Gross profit	377,358	375,225	248,716
General and administrative expenses	190,746	171,838	144,791
Interest expense, net	60,742	63,331	66,895
Closure and impairment charges	3,062	5,409	132,620
Amortization of intangible assets	10,559	10,679	10,903
(Gain) loss on disposition of assets	(2,536)	2,045	2,069
Income (loss) before income taxes	114,785	121,923	(108,562)
Income tax (provision) benefit	(33,674)	(24,059)	4,568
Net income (loss)	81,111	97,864	(103,994)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment	(6)	(4)	3
Total comprehensive income (loss)	81,105	97,860	(103,991)
Net income (loss) available to common stockholders:
Net income (loss)	81,111	97,864	(103,994)
Less: Net income allocated to unvested participating restricted stock	(2,174)	(2,295)	(420)
Net income (loss) available to common stockholders	$ 78,937	$ 95,569	$ (104,414)
Net income (loss) available to common stockholders per share:
Basic (in dollars per share)	$ 4.97	$ 5.69	$ (6.43)
Diluted (in dollars per share)	$ 4.96	$ 5.66	$ (6.43)
Weighted average shares outstanding:
Basic (in shares)	15,873	16,799	16,230
Diluted (in shares)	15,901	16,890	16,230
Franchise Revenues
Revenues:
Revenue from contract with customer	$ 662,438	$ 631,936	$ 469,453
Royalties, franchise fees and other
Revenues:
Revenue from contract with customer	373,110	357,146	267,959
Advertising revenues
Revenues:
Revenue from contract with customer	289,328	274,790	201,494
Company restaurant sales
Revenues:
Revenue from contract with customer	126,869	146,000	108,054
Financing revenues
Revenues:
Revenue from contract with customer	3,604	4,298	5,822
Advertising expenses
Revenues:
Revenue from contract with customer	289,328	274,790	201,494
Cost of revenues:
Franchise expenses	287,063	272,303	202,012
Other franchise expenses
Cost of revenues:
Franchise expenses	$ 34,584	$ 28,512	$ 24,204