Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Rental revenues	$ 113,933	$ 105,939	$ 120,666
Total revenues	896,167	689,268	910,178
Cost of revenues:
Total franchise expenses	295,887	238,972	312,754
Company restaurant expenses	136,748	111,550	123,272
Interest expense from finance leases	3,446	4,563	5,602
Other rental expenses	84,397	84,939	85,157
Total rental expenses	87,843	89,502	90,759
Financing expenses	464	528	579
Total cost of revenues	520,942	440,552	527,364
Gross profit	375,225	248,716	382,814
General and administrative expenses	171,838	144,791	162,815
Interest expense, net	63,331	66,895	60,393
Closure and impairment charges	5,409	132,620	1,487
Amortization of intangible assets	10,679	10,903	11,702
Loss on extinguishment of debt	0	0	8,276
Loss (gain) on disposition of assets	2,045	2,069	(332)
Income (loss) before income taxes	121,923	(108,562)	138,473
Income tax (provision) benefit	(24,059)	4,568	(34,127)
Net income (loss)	97,864	(103,994)	104,346
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment	(4)	3	2
Total comprehensive income (loss)	97,860	(103,991)	104,348
Net income (loss) available to common stockholders:
Net income (loss)	97,864	(103,994)	104,346
Less: Net income allocated to unvested participating restricted stock	(2,295)	(420)	(3,532)
Net income (loss) available to common stockholders	$ 95,569	$ (104,414)	$ 100,814
Net income (loss) available to common stockholders per share:
Basic (in dollars per share)	$ 5.69	$ (6.43)	$ 5.95
Diluted (in dollars per share)	$ 5.66	$ (6.43)	$ 5.85
Weighted average shares outstanding:
Basic (in shares)	16,799	16,230	16,934
Diluted (in shares)	16,890	16,230	17,245
Franchise revenues
Revenues:
Total franchise revenues	$ 631,936	$ 469,453	$ 651,186
Royalties, franchise fees and other
Revenues:
Total franchise revenues	357,146	267,959	368,171
Advertising revenues
Revenues:
Total franchise revenues	274,790	201,494	283,015
Company restaurant sales
Revenues:
Total franchise revenues	146,000	108,054	131,214
Financing revenues
Revenues:
Total franchise revenues	4,298	5,822	7,112
Advertising expenses
Revenues:
Total franchise revenues	274,790	201,494	283,015
Cost of revenues:
Total franchise expenses	272,303	202,012	281,781
Bad debt (credit) expense
Cost of revenues:
Total franchise expenses	(4,928)	12,756	(365)
Other franchise expenses
Cost of revenues:
Total franchise expenses	$ 28,512	$ 24,204	$ 31,338