Segments - Summary of Financial Information for the Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 127,231	$ 148,817
Total Segment EBITDA	46,372	59,774
Corporate and other
Segment Reporting Information [Line Items]
Total Segment EBITDA	(8,748)	(13,562)
Franchise revenue
Segment Reporting Information [Line Items]
Revenue	58,529	65,762
Franchise revenue | Operating Segments
Segment Reporting Information [Line Items]
Total Segment EBITDA	36,746	47,360
Franchise revenue | US
Segment Reporting Information [Line Items]
Revenue	57,342	64,396
Franchise revenue | International
Segment Reporting Information [Line Items]
Revenue	1,187	1,366
Corporate-owned stores
Segment Reporting Information [Line Items]
Revenue	40,516	38,044
Corporate-owned stores | Operating Segments
Segment Reporting Information [Line Items]
Total Segment EBITDA	12,007	15,569
Corporate-owned stores | US
Segment Reporting Information [Line Items]
Revenue	39,566	36,949
Corporate-owned stores | International
Segment Reporting Information [Line Items]
Revenue	950	1,095
Equipment revenue
Segment Reporting Information [Line Items]
Revenue	28,186	45,011
Equipment revenue | Operating Segments
Segment Reporting Information [Line Items]
Total Segment EBITDA	6,367	10,407
Equipment revenue | US
Segment Reporting Information [Line Items]
Revenue	$ 28,186	$ 45,011