Condensed consolidated statements of operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue:
Revenue	$ 105,383	$ 166,815	$ 272,847	$ 497,292
Operating costs and expenses:
Cost of revenue	15,302	46,194	45,625	135,071
Store operations	21,371	22,295	62,209	63,363
Selling, general and administrative	18,295	20,928	51,143	57,944
National advertising fund expense	20,157	12,652	46,240	36,986
Depreciation and amortization	13,636	11,832	39,436	32,316
Other loss (gain)	580	(147)	606	99
Total operating costs and expenses	89,341	113,754	245,259	325,779
Income from operations	16,042	53,061	27,588	171,513
Other expense, net:
Interest income	349	1,808	2,635	5,585
Interest expense	(20,686)	(14,807)	(61,394)	(44,192)
Other expense	(24)	(61)	(784)	(4,824)
Total other expense, net	(20,361)	(13,060)	(59,543)	(43,431)
(Loss) income before income taxes	(4,319)	40,001	(31,955)	128,082
(Benefit) provision for income taxes	(1,035)	10,309	(7,069)	26,924
Net (loss) income	(3,284)	29,692	(24,886)	101,158
Less net (loss) income attributable to non-controlling interests	(173)	3,915	(1,205)	13,128
Net (loss) income attributable to Planet Fitness, Inc.	$ (3,111)	$ 25,777	$ (23,681)	$ 88,030
Class A Common Stock
Net (loss) income per share of Class A common stock:
Basic (in dollars per share)	$ (0.04)	$ 0.31	$ (0.30)	$ 1.05
Diluted (in dollars per share)	$ (0.04)	$ 0.31	$ (0.30)	$ 1.04
Weighted-average shares of Class A common stock outstanding:
Basic (in shares)	80,220,503	83,157,430	79,763,279	83,699,609
Diluted (in shares)	80,220,503	83,806,906	79,763,279	84,354,172
Franchise
Revenue:
Revenue	$ 47,171	$ 53,443	$ 112,296	$ 164,624
Commission income
Revenue:
Revenue	48	614	483	2,673
National advertising fund revenue
Revenue:
Revenue	12,538	12,652	26,509	36,986
Corporate-owned stores
Revenue:
Revenue	28,289	40,742	78,224	118,481
Equipment
Revenue:
Revenue	$ 17,337	$ 59,364	$ 55,335	$ 174,528