Condensed consolidated statements of operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Revenue	$ 40,234	$ 181,661	$ 167,464	$ 330,478
Operating costs and expenses:
Cost of revenue	8,478	54,391	30,323	88,877
Store operations	14,681	20,163	40,838	41,068
Selling, general and administrative	15,896	18,864	32,848	37,018
National advertising fund expense	10,878	12,522	26,083	24,334
Depreciation and amortization	13,008	10,577	25,800	20,484
Other loss (gain)	15	(122)	26	246
Total operating costs and expenses	62,956	116,395	155,918	212,027
(Loss) income from operations	(22,722)	65,266	11,546	118,451
Other expense, net:
Interest income	359	1,979	2,286	3,777
Interest expense	(20,467)	(14,636)	(40,708)	(29,385)
Other expense	(73)	(1,444)	(760)	(4,762)
Total other expense, net	(20,181)	(14,101)	(39,182)	(30,370)
(Loss) income before income taxes	(42,903)	51,165	(27,636)	88,081
(Benefit) provision for income taxes	(10,918)	11,338	(6,034)	16,615
Net (loss) income	(31,985)	39,827	(21,602)	71,466
Less net (loss) income attributable to non-controlling interests	(2,808)	4,983	(1,032)	9,213
Net (loss) income attributable to Planet Fitness, Inc.	$ (29,177)	$ 34,844	$ (20,570)	$ 62,253
Class A Common Stock
Net (loss) income per share of Class A common stock:
Basic (in dollars per share)	$ (0.36)	$ 0.41	$ (0.26)	$ 0.74
Diluted (in dollars per share)	$ (0.36)	$ 0.41	$ (0.26)	$ 0.74
Weighted-average shares of Class A common stock outstanding:
Basic (in shares)	79,965,842	84,142,975	79,532,155	83,975,192
Diluted (in shares)	79,965,842	84,835,183	79,532,155	84,638,650
Franchise
Revenue:
Revenue	$ 16,214	$ 58,225	$ 65,125	$ 111,181
Commission income
Revenue:
Revenue	45	1,065	435	2,059
National advertising fund revenue
Revenue:
Revenue	4,743	12,522	13,971	24,334
Corporate-owned stores
Revenue:
Revenue	9,419	39,695	49,935	77,739
Equipment
Revenue:
Revenue	$ 9,813	$ 70,154	$ 37,998	$ 115,165