Segment Reporting (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Rental revenues	$ 113,933	$ 105,939	$ 120,666
Total revenues	896,167	689,268	910,178
Gross profit (loss), by segment	121,923	(108,562)	138,473
Interest expense	71,500	75,900	70,200
Depreciation and amortization	39,885	42,829	42,493
Impairment of goodwill and intangible assets, closure and other impairment charges	5,400	132,600	1,500
Capital expenditures	16,849	10,927	19,424
Goodwill	251,628	251,628	343,900	$ 345,300
Total assets	1,999,366	2,074,945	2,049,500
Operating Segments
Segment Reporting Information [Line Items]
Gross profit (loss), by segment	375,200	248,700	382,800
Goodwill	251,600	251,600	343,900
Corporate
Segment Reporting Information [Line Items]
Gross profit (loss), by segment	(253,300)	(357,300)	(244,300)
Interest expense	63,300	66,900	60,400
Depreciation and amortization	11,700	13,400	12,400
Capital expenditures	10,300	8,200	15,600
Total assets	425,000	454,700	223,200
Franchise operations
Segment Reporting Information [Line Items]
Revenue from contract with customer	631,936	469,453	651,186
Financing operations
Segment Reporting Information [Line Items]
Revenue from contract with customer	4,298	5,822	7,112
Franchise operations | Operating Segments
Segment Reporting Information [Line Items]
Gross profit (loss), by segment	336,000	230,500	338,400
Depreciation and amortization	10,100	10,100	10,300
Impairment of goodwill and intangible assets, closure and other impairment charges	1,700	122,100	0
Capital expenditures	0	0	600
Total assets	991,000	997,700	1,116,200
Franchise operations | Franchise operations | Operating Segments
Segment Reporting Information [Line Items]
Revenue from contract with customer	631,900	469,500	651,200
Goodwill	247,000	247,000	339,300
Rental operations | Operating Segments
Segment Reporting Information [Line Items]
Rental revenues	114,000	105,900	120,700
Gross profit (loss), by segment	26,100	16,400	29,900
Interest expense	4,900	6,300	7,700
Depreciation and amortization	11,100	12,300	13,400
Total assets	426,500	451,500	503,800
Company restaurants | Operating Segments
Segment Reporting Information [Line Items]
Gross profit (loss), by segment	9,300	(3,500)	8,000
Interest expense	3,300	2,700	2,100
Depreciation and amortization	7,000	7,000	6,400
Impairment of goodwill and intangible assets, closure and other impairment charges	3,700	10,500	1,500
Capital expenditures	6,500	2,700	3,200
Total assets	117,200	121,100	134,300
Company restaurants | Company restaurants
Segment Reporting Information [Line Items]
Revenue from contract with customer	146,000	108,100
Company restaurants | Company restaurants | Operating Segments
Segment Reporting Information [Line Items]
Revenue from contract with customer			131,200
Goodwill	4,600	4,600	4,600
Financing operations | Operating Segments
Segment Reporting Information [Line Items]
Gross profit (loss), by segment	3,800	5,300	6,500
Total assets	39,700	49,900	72,000
Financing operations | Financing operations | Operating Segments
Segment Reporting Information [Line Items]
Revenue from contract with customer	$ 4,300	$ 5,800	$ 7,100