Planet Fitness (PLNT) 10-Q 3 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 26, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Trading Symbol	PLNT
Entity Registrant Name	PLANET FITNESS, INC.
Entity Central Index Key	1,637,207
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Class A Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		50,049,305
Class B Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		48,530,085

Condensed consolidated balance

Condensed consolidated balance sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 65,954	$ 31,430
Accounts receivable, net of allowance for bad debts of $673 and $629 at September 30, 2016 and December 31, 2015, respectively	14,435	19,079
Due from related parties	97	4,940
Inventory	759	4,557
Restricted assets – national advertising fund	2,455	1,962
Other current assets	19,420	10,977
Total current assets	103,120	72,945
Property and equipment, net of accumulated depreciation of $28,435 as of September 30, 2016 and $23,525 as of December 31, 2015	56,577	56,139
Intangible assets, net	258,799	273,619
Goodwill	176,981	176,981
Deferred income taxes	255,729	117,358
Other assets, net	1,132	2,135
Total assets	852,338	699,177
Current liabilities:
Current maturities of long-term debt	5,100	5,100
Accounts payable	14,415	23,950
Accrued expenses	10,207	13,667
Due to related parties	3,966
Equipment deposits	3,978	5,587
Restricted liabilities - national advertising fund	2,455
Deferred revenue, current	17,084	14,717
Payable to related parties pursuant to tax benefit arrangements, current	8,916	3,019
Other current liabilities	222	212
Total current liabilities	66,343	66,252
Long-term debt, net of current maturities	477,067	479,779
Deferred rent, net of current portion	4,878	4,554
Deferred revenue, net of current portion	8,472	12,016
Deferred tax liabilities	1,275	0
Payable to related parties pursuant to tax benefit arrangements, net of current portion	265,156	137,172
Other liabilities	489	484
Total noncurrent liabilities	757,337	634,005
Commitments and contingencies (note 11)
Stockholders' equity (deficit):
Accumulated other comprehensive loss	(1,123)	(1,710)
Additional paid in capital	14,825	352
Retained earnings (accumulated deficit)	(4,248)	(14,032)
Total stockholders' equity (deficit) attributable to Planet Fitness Inc.	9,464	(15,380)
Non-controlling interests	19,194	14,300
Total stockholders' equity (deficit)	28,658	(1,080)
Total liabilities and stockholders' equity (deficit)	852,338	699,177
Class A Common Stock [Member]
Stockholders' equity (deficit):
Common stock, value	5	4
Class B Common Stock [Member]
Stockholders' equity (deficit):
Common stock, value	$ 5	$ 6

Condensed consolidated balance3

Condensed consolidated balance sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts receivable, allowance for bad debts	$ 673	$ 629
Property and equipment, accumulated depreciation	$ 28,435	$ 23,525
Class A Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	49,914,000	36,598,000
Common stock, shares outstanding	49,914,000	36,598,000
Class B Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	48,665,000	62,112,000
Common stock, shares outstanding	48,665,000	62,112,000

Condensed consolidated statemen

Condensed consolidated statements of operations - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Franchise		$ 23,046	$ 16,148	$ 70,042	$ 51,806
Commission income		4,179	3,646	14,338	11,624
Corporate-owned stores		26,675	25,153	78,756	73,674
Equipment		33,107	23,870	98,686	87,588
Total revenue		87,007	68,817	261,822	224,692
Operating costs and expenses:
Cost of revenue		25,925	18,858	77,365	70,104
Store operations		15,181	14,305	45,673	43,354
Selling, general and administrative		12,244	17,348	36,470	43,840
Depreciation and amortization		7,745	7,976	23,127	24,160
Other gain		(241)	(9)	(406)	(76)
Total operating costs and expenses		60,854	58,478	182,229	181,382
Income from operations		26,153	10,339	79,593	43,310
Other expense, net:
Interest expense, net		(6,291)	(6,556)	(18,819)	(17,872)
Other income (expense)		(204)	(1,815)	30	(2,627)
Total other expense, net		(6,495)	(8,371)	(18,789)	(20,499)
Income before income taxes		19,658	1,968	60,804	22,811
Provision for income taxes		4,795	1,230	11,504	1,921
Net income		14,863	738	49,300	20,890
Less net income attributable to non-controlling interests		11,438	4,631	38,374	4,857
Net income (loss) attributable to Planet Fitness, Inc.		$ 3,425	$ (3,893)	$ 10,926	$ 16,033
Class A Common Stock [Member]
Net income per share of Class A common stock:
Basic	[1]	$ 0.08	$ 0.05	$ 0.28	$ 0.05
Diluted	[1]	$ 0.08	$ 0.04	$ 0.28	$ 0.04
Weighted-average shares of Class A common stock outstanding(1):
Basic	[1]	44,668,875	35,661	39,394,318	35,661
Diluted	[1]	44,685,696	98,710	39,397,486	98,710
[1]	For the three and nine months ended September 30, 2015, represents earnings per share of Class A common stock and weighted-average shares of Class A common stock outstanding for the period from August 6, 2015 through September 30, 2015, the period following the recapitalization transactions and IPO (see Note 9).

Condensed consolidated stateme5

Condensed consolidated statements of comprehensive income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income including non-controlling interests	$ 14,863	$ 738	$ 49,300	$ 20,890
Other comprehensive income (loss), net:
Unrealized gain (loss) on interest rate caps, net of tax	193	(557)	(469)	(1,497)
Foreign currency translation adjustments	11	198	(84)	245
Total other comprehensive income (loss), net	204	(359)	(553)	(1,252)
Total comprehensive income including non-controlling interests	15,067	379	48,747	19,638
Less: total comprehensive income attributable to non-controlling interests	11,572	4,423	37,964	4,649
Total comprehensive income (loss) attributable to Planet Fitness, Inc.	$ 3,495	$ (4,044)	$ 10,783	$ 14,989

Condensed consolidated stateme6

Condensed consolidated statements of cash flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 49,300	$ 20,890
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,127	24,160
Amortization of deferred financing costs	1,114	1,070
Amortization of favorable leases and asset retirement obligations	297	380
Amortization of interest rate caps	459
Deferred tax expense (benefit)	11,062	(141)
Provision for bad debts	44	547
Gain on disposal of property and equipment	(347)	(76)
Equity-based compensation	1,373	4,647
Changes in operating assets and liabilities:
Accounts receivable	4,898	8,830
Due to and due from related parties	8,494	4,532
Inventory	3,798	237
Other assets and other current assets	(1,635)	(563)
Accounts payable and accrued expenses	(10,172)	(11,745)
Other liabilities and other current liabilities	(30)	57
Income taxes	(7,543)	969
Payable to related parties pursuant to tax benefit arrangements	(6,007)
Equipment deposits	(1,609)	823
Deferred revenue	(1,264)	626
Deferred rent	379	1,330
Net cash provided by operating activities	75,738	56,573
Cash flows from investing activities:
Additions to property and equipment	(9,266)	(13,830)
Proceeds from sale of property and equipment	402	76
Net cash used in investing activities	(8,864)	(13,754)
Cash flows from financing activities:
Proceeds from issuance of Class A common stock sold in initial public offering, net of underwriting discounts and commissions		156,946
Use of proceeds from issuance of Class A common stock to purchase Holdings Units		(156,946)
Exercise of common stock options	79
Proceeds from issuance of long-term debt		120,000
Principal payments on capital lease obligations	(37)	(343)
Repayment of long-term debt	(3,825)	(3,525)
Payment of deferred financing and other debt-related costs		(1,698)
Premiums paid for interest rate caps		(880)
Repurchase and retirement of Class B common stock	(1,583)
Distributions to Continuing LLC Members	(27,071)	(171,101)
Net cash used in financing activities	(32,437)	(57,547)
Effects of exchange rate changes on cash and cash equivalents	87	(102)
Net increase (decrease) in cash and cash equivalents	34,524	(14,830)
Cash and cash equivalents, beginning of period	31,430	43,291
Cash and cash equivalents, end of period	65,954	28,461
Supplemental cash flow information:
Net cash paid for income taxes	8,121	1,105
Cash paid for interest	17,187	17,063
Non-cash investing activities:
Non-cash additions to property and equipment	$ 127	$ 709

Condensed consolidated stateme7

Condensed consolidated statement of changes in equity (deficit) - 9 months ended Sep. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Accumulated Other Comprehensive Loss [Member]	Additional Paid-in capital [Member]	Accumulated Deficit [Member]	Non-Controlling Interests [Member]	Class A Common Stock [Member]	Class A Common Stock [Member]Common Stock [Member]	Class B Common Stock [Member]	Class B Common Stock [Member]Common Stock [Member]
Beginning balance at Dec. 31, 2015	$ (1,080)	$ (1,710)	$ 352	$ (14,032)	$ 14,300		$ 4		$ 6
Beginning balance (shares) at Dec. 31, 2015						36,598		62,112
Net income	49,300			10,926	38,374
Equity-based compensation expense	1,373		1,373
Repurchase and retirement of Class B common stock	(1,583)		(441)	(1,142)
Repurchase and retirement of Class B common stock, shares								(141)
Exchanges of Class B common stock		730	5,269		(5,999)		1		(1)
Exchanges of Class B common stock, shares						13,306		(13,306)
Tax benefit arrangement liability and deferred taxes arising from secondary offerings	8,148		8,148
Exercise of stock options and vesting of restricted share units	124		124
Exercise of stock options and vesting of restricted share units, shares						10
Distributions paid to members of Pla-Fit Holdings	(27,071)				(27,071)
Other comprehensive loss	(553)	(143)			(410)
Ending balance at Sep. 30, 2016	$ 28,658	$ (1,123)	$ 14,825	$ (4,248)	$ 19,194		$ 5		$ 5
Ending balance (shares) at Sep. 30, 2016						49,914		48,665

Business organization

Business organization	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business organization	(1) Business organization Planet Fitness, Inc. (the “Company”), through its subsidiaries, is a franchisor and operator of fitness centers, with more than 8.7 million members and 1,242 owned and franchised locations (referred to as stores) in 47 states, the District of Columbia, Puerto Rico, Canada and the Dominican Republic as of September 30, 2016. The Company serves as the reporting entity for its various subsidiaries that operate three distinct lines of business: • Licensing and selling franchises under the Planet Fitness trade name. • Owning and operating fitness centers under the Planet Fitness trade name. • Selling fitness-related equipment to franchisee-owned stores. The Company was formed as a Delaware corporation on March 16, 2015 for the purpose of facilitating an initial public offering (the “IPO”) which was completed on August 11, 2015 and related transactions in order to carry on the business of Pla-Fit Holdings, LLC and its subsidiaries (“Pla-Fit Holdings”). As of August 5, 2015, in connection with the recapitalization transactions that occurred prior to the IPO, the Company became the sole managing member and holder of 100% of the voting power of Pla-Fit Holdings. Pla-Fit Holdings owns 100% of Planet Intermediate, LLC which has no operations but is the 100% owner of Planet Fitness Holdings, LLC, a franchisor and operator of fitness centers. With respect to the Company, Pla-Fit Holdings and Planet Intermediate, LLC, each entity owns nothing other than the respective entity below it in the corporate structure and each entity has no other material operations. Subsequent to the IPO and the related recapitalization transactions, the Company is a holding company whose principal asset is a controlling equity interest in Pla-Fit Holdings. As the sole managing member of Pla-Fit Holdings, the Company operates and controls all of the business and affairs of Pla-Fit Holdings, and through Pla-Fit Holdings, conducts its business. As a result, the Company consolidates Pla-Fit Holdings’ financial results and reports a non-controlling interest related to the portion of limited liability company units of Pla-Fit Holdings, LLC (“Holdings Units”) not owned by the Company. The recapitalization transactions are considered transactions between entities under common control. As a result, the financial statements for periods prior to the IPO and the recapitalization transactions are the financial statements of Pla-Fit Holdings as the predecessor to the Company for accounting and reporting purposes. Unless otherwise specified, “the Company” refers to both Planet Fitness, Inc. and Pla-Fit Holdings throughout the remainder of these notes. In June 2016, the Company completed a secondary offering (“June Secondary Offering”) of 11,500,000 shares of its Class A common stock at a price of $16.50 per share. All of the shares sold in the offering were offered by certain existing holders of Holdings Units (“Continuing LLC Owners”) and certain holders of Class A common stock (“Direct TSG Investors”). The Company did not receive any proceeds from the sale of shares of Class A common stock offered by the Direct TSG Investors and the participating Continuing LLC Owners. The shares sold in the June Secondary Offering consisted of (i) 3,608,840 existing shares of Class A common stock held by the Direct TSG Investors and (ii) 7,891,160 newly-issued shares of Class A common stock issued in connection with the exercise of the exchange right by the Continuing LLC Owners that participated in the June Secondary Offering. Simultaneously, and in connection with the exchange, 7,891,160 shares of Class B common stock were surrendered by the Continuing LLC Owners that participated in the June Secondary Offering and canceled. Additionally, in connection with the exchange, Planet Fitness, Inc. received 7,891,160 Holdings Units, increasing its total ownership interest in Pla-Fit Holdings. Immediately preceding the June Secondary Offering, Planet Fitness, Inc. held 100% of the voting interest and 37.1% of the economic interest of Pla-Fit Holdings and the Continuing LLC Owners held the remaining 62.9% economic interest in Pla-Fit Holdings. In September 2016, the Company completed a secondary offering (“September Secondary Offering”) of 8,000,000 shares of its Class A common stock at a price of $19.62 per share. All of the shares sold in the offering were offered by the Direct TSG Investors and participating Continuing LLC Owners. The Company did not receive any proceeds from the sale of shares of Class A common stock offered by the Direct TSG Investors and the Continuing LLC Owners that participating in the September Secondary Offering. The shares sold in the September Secondary Offering consisted of (i) 2,593,981 existing shares of Class A common stock held by the Direct TSG Investors and (ii) 5,406,019 newly-issued shares of Class A common stock issued in connection with the exercise of the exchange right by the Continuing LLC Owners that participated in the September Secondary offering. Simultaneously, and in connection with the exchange, 5,406,019 shares of Class B common stock were surrendered by the Continuing LLC Owners that participated in the September Secondary Offering and canceled. Additionally, in connection with the exchange, Planet Fitness, Inc received 5,406,019 Holdings Units, increasing its total ownership interest in Pla-Fit Holdings. Immediately preceding the September Secondary Offering, Planet Fitness, Inc. held 100% of the voting interest and 45.1% of the economic interest of Pla-Fit Holdings and the Continuing LLC Owners held the remaining 54.9% economic interest in Pla-Fit Holdings. Immediately following the completion of the September Secondary Offering and as of September 30, 2016, Planet Fitness, Inc. held 100% of the voting interest and 50.6% of the economic interest of Pla-Fit Holdings and the Continuing LLC Owners held the remaining 49.4% economic interest in Pla-Fit Holdings. As future exchanges of Holdings Units occur, Planet Fitness, Inc.’s economic interest in Pla-Fit Holdings will increase.

Summary of significant accounti

Summary of significant accounting policies	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of significant accounting policies	(2) Summary of significant accounting policies (a) Basis of presentation and consolidation The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Accordingly, these interim financial statements do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the results of operations, financial position and cash flows for the periods presented have been reflected. All significant intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements as of and for the three and nine months ended September 30, 2016 and 2015 are unaudited. The condensed consolidated balance sheet as of December 31, 2015 has been derived from the audited financial statements at that date but does not include all of the disclosures required by U.S. GAAP. These interim condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (the “Annual Report”) filed with the SEC on March 4, 2016 . As discussed in Note 1, as a result of the recapitalization transactions, Planet Fitness, Inc. consolidates Pla-Fit Holdings and Pla-Fit Holdings is considered to be the predecessor to Planet Fitness, Inc. for accounting and reporting purposes. The Company also consolidates entities in which it has a controlling financial interest, the usual condition of which is ownership of a majority voting interest. The Company also considers for consolidation certain interests where the controlling financial interest may be achieved through arrangements that do not involve voting interests. Such an entity, known as a variable interest entity (“VIE”), is required to be consolidated by its primary beneficiary. The primary beneficiary of a VIE is considered to possess the power to direct the activities of the VIE that most significantly impact its economic performance and has the obligation to absorb losses or the rights to receive benefits from the VIE that are significant to it. The principal entities in which the Company possesses a variable interest include franchise entities and certain other entities. The Company is not deemed to be the primary beneficiary for Planet Fitness franchise entities. Therefore, these entities are not consolidated. The results of the Company have been consolidated with Matthew Michael Realty LLC (“MMR”) and PF Melville LLC (“PF Melville”) based on the determination that the Company is the primary beneficiary with respect to these VIEs. These entities are real estate holding companies that derive a majority of their financial support from the Company through lease agreements for corporate stores. See Note 3 for further information related to the Company’s VIEs. (b) Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates are based on management’s knowledge of current events and actions it may undertake in the future, they may ultimately differ from actual results. Significant areas where estimates and judgments are relied upon by management in the preparation of the consolidated financial statements include revenue recognition, valuation of assets and liabilities in connection with acquisitions, valuation of equity-based compensation awards, the evaluation of the recoverability of goodwill and long-lived assets, including intangible assets, income taxes, including deferred tax assets and liabilities and reserves for unrecognized tax benefits, and the liability for the Company’s tax benefit arrangements. (c) Fair Value ASC 820, Fair Value Measurements and Disclosures Level 1—Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2—Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3—Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The table below presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015: Quoted Significant Total fair prices other Significant value at in active observable unobservable September 30, markets inputs inputs 2016 (Level 1) (Level 2) (Level 3) Interest rate caps $ 134 $ — $ 134 $ — Quoted Significant Total fair prices other Significant value at in active observable unobservable December 31, markets inputs inputs 2015 (Level 1) (Level 2) (Level 3) Interest rate caps $ 1,147 $ — $ 1,147 $ — (d) Recent accounting pronouncements The FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, The FASB issued ASU No. 2015-02, Income Statement—Consolidation The FASB issued ASU No. 2015-05: Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement The FASB issued ASU No. 2016-02, Leases The FASB issued ASU No. 2016-09, Stock Compensation The FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments

Variable interest entities

Variable interest entities	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable interest entities	(3) Variable interest entities The carrying values of VIEs included in the consolidated financial statements as of September 30, 2016 and December 31, 2015 are as follows: September 30, 2016 December 31, 2015 Assets Liabilities Assets Liabilities PF Melville $ 3,984 $ — $ 3,728 $ — MMR 3,105 — 2,953 — Total $ 7,089 $ — $ 6,681 $ — The Company also has variable interests in certain franchisees mainly through the guarantee of certain debt and lease agreements as well as financing provided by the Company and by certain related parties to franchisees. The Company’s maximum obligation, as a result of its guarantees of leases and debt, is approximately $1,459 and $1,871 as of September 30, 2016 and December 31, 2015, respectively. The amount of the Company’s maximum obligation represents a loss that the Company could incur from the variability in credit exposure without consideration of possible recoveries through insurance or other means. In addition, the amount bears no relation to the ultimate settlement anticipated to be incurred from the Company’s involvement with these entities, which is estimated at $0.

Goodwill and intangible assets

Goodwill and intangible assets	9 Months Ended
	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and intangible assets	(4) Goodwill and intangible assets A summary of goodwill and intangible assets at September 30, 2016 and December 31, 2015 is as follows: Weighted average Gross amortization carrying Accumulated Net carrying September 30, 2016 period (years) amount amortization Amount Customer relationships 11.1 $ 171,782 (68,926 ) $ 102,856 Noncompete agreements 5.0 14,500 (11,302 ) 3,198 Favorable leases 7.5 2,935 (1,549 ) 1,386 Order backlog 0.4 3,400 (3,400 ) — Reacquired franchise rights 5.8 8,950 (3,891 ) 5,059 201,567 (89,068 ) 112,499 Indefinite-lived intangible: Trade and brand names N/A 146,300 — 146,300 Total intangible assets $ 347,867 $ (89,068 ) $ 258,799 Goodwill $ 176,981 $ — $ 176,981 Weighted average Gross amortization carrying Accumulated Net carrying December 31, 2015 period (years) amount amortization Amount Customer relationships 11.1 $ 171,782 $ (57,741 ) $ 114,041 Noncompete agreements 5.0 14,500 (9,127 ) 5,373 Favorable leases 7.5 2,935 (1,256 ) 1,679 Order backlog 0.4 3,400 (3,400 ) — Reacquired franchise rights 5.8 8,950 (2,724 ) 6,226 201,567 (74,248 ) 127,319 Indefinite-lived intangible: Trade and brand names N/A 146,300 — 146,300 Total intangible assets $ 347,867 $ (74,248 ) $ 273,619 Goodwill $ 176,981 $ — $ 176,981 The Company determined that no impairment charges were required during any periods presented. Amortization expense related to the intangible assets totaled $4,940 and $5,404 for the three months ended September 30, 2016 and 2015, respectively and $14,820 and $16,181 for the nine months ended September 30, 2016 and 2015, respectively. Included within these total amortization expense amounts are $97 and $143 related to amortization of favorable and unfavorable leases for the three months ended September 30, 2016 and 2015, respectively and $292 and $380 for the nine months ended September 30, 2016 and 2015. Amortization of favorable and unfavorable leases is recorded within store operations as a component of rent expense in the consolidated statements of operations. The anticipated annual amortization expense to be recognized in future years as of September 30, 2016 is as follows: Amount Remainder of 2016 $ 4,936 2017 18,215 2018 14,583 2019 14,215 2020 12,517 Thereafter 48,033 Total $ 112,499

Long-term debt

Long-term debt	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Long-term debt	(5) Long-term debt Long-term debt as of September 30, 2016 and December 31, 2015 consists of the following: September 30, 2016 December 31, 2015 Term loan B requires quarterly installments plus interest through the term of the loan, maturing March 31, 2021. Outstanding borrowings bear interest at LIBOR or base rate (as defined) plus a margin at the election of the borrower (4.50% at September 30, 2016 and 4.75% at December 31, 2015) $ 488,450 $ 492,275 Revolving credit line, requires interest only payments through the term of the loan, maturing March 31, 2019. Outstanding borrowings bear interest at LIBOR or base rate (as defined) plus a margin at the election of the borrower (4.25% at September 30, 2016 and December 31, 2015) — — Total debt, excluding deferred financing costs $ 488,450 492,275 Deferred financing costs, net of accumulated amortization (6,283 ) (7,396 ) Total debt 482,167 484,879 Current portion of long-term debt and line of credit 5,100 5,100 Long-term debt, net of current portion $ 477,067 $ 479,779 Future annual principal payments of long-term debt as of September 30, 2016 are as follows: Amount Remainder of 2016 $ 1,275 2017 5,100 2018 5,100 2019 5,100 2020 5,100 Thereafter 466,775 Total $ 488,450

Derivative instruments and hedg

Derivative instruments and hedging activities	9 Months Ended
	Sep. 30, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative instruments and hedging activities	(6) Derivative instruments and hedging activities The Company utilizes interest-rate-related derivative instruments to manage its exposure related to changes in interest rates on its variable-rate debt instruments. The Company does not enter into derivative instruments for any purpose other than cash flow hedging. The Company does not speculate using derivative instruments. By using derivative financial instruments to hedge exposures to changes in interest rates, the Company exposes itself to credit risk and market risk. Credit risk is the failure of the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is an asset, the counterparty owes the Company, which creates credit risk for the Company. When the fair value of a derivative contract is a liability, the Company owes the counterparty and, therefore, the Company is not exposed to the counterparty’s credit risk in those circumstances. The Company minimizes counterparty credit risk in derivative instruments by entering into transactions with high-quality counterparties whose credit rating is higher than A1/A+ at the inception of the derivative transaction. The derivative instruments entered into by the Company do not contain credit-risk-related contingent features. Market risk is the adverse effect on the value of a derivative instrument that results from a change in interest rates. The market risk associated with interest-rate contracts is managed by establishing and monitoring parameters that limit the types and degree of market risk that may be undertaken. The Company assesses interest rate risk by continually identifying and monitoring changes in interest rate exposures that may adversely impact expected future cash flows and by evaluating hedging opportunities. The Company monitors interest rate risk attributable to both the Company’s outstanding or forecasted debt obligations as well as the Company’s offsetting hedge positions. In September 2014 and September 2015, the Company entered into a series of interest rate caps. As of September 30, 2016, the Company had interest rate cap agreements with notional amounts of $209,000 outstanding that were entered into in order to hedge LIBOR greater than 1.5%. The interest rate cap balances of $134 and $1,147 were recorded within other assets in the condensed consolidated balance sheets as of September 30, 2016 and December 31, 2015, respectively. These amounts have been measured at fair value and are considered to be a Level 2 fair value measurement. The Company recorded a reduction to the value of its interest rate caps of $469, net of tax of $83, within other comprehensive loss during the nine months ended September 30, 2016. As of September 30, 2016, the Company does not expect to reclassify any amounts included in accumulated other comprehensive income (loss) into earnings during the next 12 months. Transactions and events expected to occur over the next 12 months that will necessitate reclassifying these derivatives’ loss to earnings include the re-pricing of variable-rate debt.

Related party transactions

Related party transactions	9 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Related party transactions	(7) Related party transactions Amounts due from related parties consist of: September 30, 2016 December 31, 2015 Accounts receivable – related entities $ 31 $ 39 Accounts receivable – stockholders/members 66 4,901 Due from related parties $ 97 $ 4,940 Accounts payable – related entities 3,966 — Due to related parties $ 3,966 $ — Amounts due from stockholders/members as of September 30, 2016 and December 31, 2015 relate to reimbursements for certain taxes owed or paid by the Company. Activity with entities considered to be related parties is summarized below: For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Franchise revenue $ 359 $ 298 $ 1,174 $ 868 Equipment revenue 3 425 770 1,108 Total revenue from related parties $ 362 $ 723 $ 1,944 $ 1,976 The Company paid management fees to TSG Consumer Partners, LLC (“TSG”) totaling $0 and $1,384 during the three months ended September 30, 2016 and 2015, respectively and $0 and $1,899 during the nine months ended September 30, 2016 and 2015. In connection with the IPO, the management agreement with TSG was terminated, and the Company paid TSG a $1,000 termination fee, which is included in the fees paid for the three and nine months ended September 30, 2015.

Stockholder's equity

Stockholder's equity	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Stockholder's equity	(8) Stockholder’s equity The recapitalization transactions We refer to the Merger, Reclassification and entry into the exchange agreement, each as described below, as the “recapitalization transactions.” The Merger was effected pursuant to a merger agreement by and among the Company and Planet Fitness Holdings, L.P. (a predecessor entity to the Company that held indirect interests in Pla-Fit Holdings, LLC) and the recapitalization transactions were effected pursuant to a recapitalization agreement by and among the Company, Pla-Fit Holdings, Continuing LLC Owners, and Direct TSG Investors. Merger Prior to the Merger, the Direct TSG Investors held interests in Planet Fitness Holdings, L.P., which was formed in October 2014 and had no material assets, liabilities or operations, other than as a holding company owning indirect interests in Pla-Fit Holdings. The Direct TSG Investors consist of investment funds affiliated with TSG. Pursuant to a merger agreement dated June 22, 2015, Planet Fitness Holdings, L.P. merged with and into the Company, and the interests in Planet Fitness Holdings, L.P. held by the Direct TSG Investors were converted into 26,106,930 shares of Class A common stock of the Company. We refer to this as the “Merger.” All shares of Class A common stock have both voting and economic rights in Planet Fitness, Inc. The Merger was effected on August 5, 2015, prior to the time our Class A common stock was registered under the Exchange Act and prior to the completion of the IPO. Reclassification The equity interests of Pla-Fit Holdings, LLC previously consisted of three different classes of limited liability company units (Class M, Class T and Class O). Prior to the completion of the IPO, the limited liability company agreement of Pla-Fit Holdings was amended and restated to, among other things, modify its capital structure to create a single new class of units, the Holdings Units. We refer to this capital structure modification as the “Reclassification.” The Direct TSG Investors’ indirect interest in Pla-Fit Holdings was held through Planet Fitness Holdings, L.P. As a result, following the Merger, the Direct TSG Investors’ indirect interests in Pla-Fit Holdings are held through the Company. Therefore, the Holdings Units received in the Reclassification were allocated to: (1) the Continuing LLC Owners based on their existing interests in Pla-Fit Holdings; and (2) the Company to the extent of the Direct TSG Investors’ indirect interest in Pla-Fit Holdings. The number of Holdings Units allocated to the Company in the Reclassification was equal to the number of shares of Class A common stock that the Direct TSG Investors received in the Merger (on a one-for-one basis). The Reclassification was effected on August 5, 2015, prior to the time our Class A common stock was registered under the Exchange Act and prior to the completion of the IPO. Following the Merger and the Reclassification, the Company issued to Continuing LLC Owners 72,602,810 shares of Class B common stock in addition to their Holdings Units, with each Continuing LLC Owner receiving one share of Class B common stock for each Holdings Unit held. The shares of Class B common stock have no rights to dividends or distributions, whether in cash or stock, but entitle the holder to one vote per share on matters presented to stockholders of the Company. The Holdings Units entitle the Continuing LLC Owners to participate pro rata in distributions made by Pla-Fit Holdings to its members, including the Continuing LLC Owners and the Company, but do not entitle the Continuing LLC Owners to any voting rights. The Continuing LLC Owners consist of investment funds affiliated with TSG and certain current and former employees and directors. Pursuant to the LLC agreement that went into effect at the time of the Reclassification (“New LLC Agreement”), the Company was designated as the sole managing member of Pla-Fit Holdings. Accordingly, the Company has the right to determine when distributions will be made by Pla-Fit Holdings to its members, including the Company, and the amount of any such distributions (subject to the requirements with respect to the tax distributions described below). If the Company authorizes a distribution by Pla-Fit Holdings, the distribution will be made to the members of Pla-Fit Holdings, including the Company, pro rata in accordance with the percentages of their respective Holdings Units. The holders of Holdings Units will incur U.S. federal, state and local income taxes on their allocable share of any taxable income of Pla-Fit Holdings (as calculated pursuant to the New LLC Agreement). Net profits and net losses of Pla-Fit Holdings will generally be allocated to its members pursuant to the New LLC Agreement pro rata in accordance with the percentages of their respective Holdings Units. The New LLC Agreement provides for cash distributions to the holders of Holdings Units for purposes of funding their tax obligations in respect of the income of Pla-Fit Holdings that is allocated to them, to the extent other distributions from Pla-Fit Holdings for the relevant year have been insufficient to cover such liability. Generally, these tax distributions are computed based on the estimated taxable income of Pla-Fit Holdings allocable to the holders of Holdings Units multiplied by an assumed, combined tax rate equal to the maximum rate applicable to an individual or corporation resident in San Francisco, California (taking into account the non-deductibility of certain expenses and the character of the Company’s income). Exchange agreement Following the Merger and the Reclassification, the Company and the Continuing LLC Owners entered into an exchange agreement under which the Continuing LLC Owners (or certain permitted transferees thereof) have the right, from time to time and subject to the terms of the exchange agreement, to exchange their Holdings Units, along with a corresponding number of shares of Class B common stock, for shares of Class A common stock (or cash at the option of the Company) on a one-for-one basis, subject to customary conversion rate adjustments for stock splits, stock dividends, reclassifications and similar transactions. As a Continuing LLC Owner exchanges Holdings Units, along with a corresponding number of shares of Class B common stock, for shares of Class A common stock, the number of Holdings Units held by the Company will be correspondingly increased as it acquires the exchanged Holdings Units and cancels a corresponding number of shares of Class B common stock. IPO transactions In connection with the completion of the IPO on August 11, 2015, in order to facilitate the disposition of equity interests in Pla-Fit Holdings held by Continuing LLC Owners affiliated with TSG, the Company used the net proceeds received to purchase issued and outstanding Holdings Units from these Continuing LLC Owners that they received in the Reclassification. In connection with the IPO, the Company purchased 10,491,055 issued and outstanding Holdings Units from these Continuing LLC Owners for an aggregate of $156,946. This is in addition to the 26,106,930 Holdings Units that the Company acquired in the Reclassification on a one-for-one basis in relation to the number of shares of Class A common stock issued to the Direct TSG Investors in the Merger. Accordingly, following the IPO, the Company held 36,597,985 Holdings Units, which was equal to the number of shares of Class A common stock that were issued to the Direct TSG Investors and investors in the IPO. The Direct TSG Investors, who did not receive Holdings Units in the Reclassification but received shares of Class A common stock in the Merger, sold 5,033,945 shares of Class A common stock in the IPO. June Secondary Offering As described in Note 1, on June 28, 2016 the Company completed the June Secondary Offering of 11,500,000 shares of our Class A common stock at a price of $16.50 per share. All of the shares sold in the offering were offered by Direct TSG Investors and the participating Continuing LLC Owners. The Company did not receive any proceeds from the sale of shares of Class A common stock offered by the Direct TSG Investors and the participating Continuing LLC Owners. The shares sold in the offering consisted of (i) 3,608,840 existing shares of Class A common stock held by the Direct TSG Investors and (ii) 7,891,160 newly-issued shares of Class A common stock issued in connection with the exercise of the exchange right by the Continuing LLC Owners that participated in the June Secondary Offering. Simultaneously, and in connection with the exchange, 7,891,160 shares of Class B common stock were surrendered by the Continuing LLC Owners that participated in the June Secondary Offering and canceled. Additionally, in connection with the exchange, we received 7,891,160 Holdings Units, increasing Planet Fitness Inc.’s total ownership interest in Pla-Fit Holdings. September Secondary Offering As described in Note 1, on September 28, 2016, the Company completed the September Secondary Offering of 8,000,000 shares of our Class A common stock at a price of 19.62 per share. All of the shares sold in the offering were offered by the Direct TSG Investors and participating Continuing LLC Owners. The Company did not receive any proceeds from the sale of shares of Class A common stock offered by the Direct TSG Investors and the participating Continuing LLC Owners. The shares sold in the offering consisted of (i) 2,593,981 existing shares of Class A common stock held by the Direct TSG Investors and (ii) 5,406,019 newly-issued shares of Class A common stock issued in connection with the exercise of the exchange right by the Continuing LLC Owners that participated in the September Secondary Offering. Simultaneously, and in connection with the exchange, 5,406,019 shares of Class B common stock were surrendered by the Continuing LLC Owners that participated in the September Secondary Offering and canceled. Additionally, in connection with the exchange, Planet Fitness, Inc received 5,406,019 Holdings Units, increasing its total ownership interest in Pla-Fit Holdings. Future exchanges of Holdings Units by the Continuing LLC Owners will result in a change in ownership and reduce the amount recorded as non-controlling interest and increase additional paid-in capital on our consolidated balance sheets. As a result of the recapitalization transactions, the offering transactions, the IPO, completion of our secondary offerings, and other exchanges and equity activity during the quarter: • the investors in the IPO and the Company’s secondary offerings collectively own 35,043,641 shares of Planet Fitness, Inc. Class A common stock, representing 35.5% of the voting power in the Company and, through the Company, 35.5% of the economic interest in Pla-Fit Holdings; • the Direct TSG Investors own 14,870,164 shares of Planet Fitness, Inc. Class A common stock, representing 15.1% of the voting power in the Company and, through the Company, 15.1% of the economic interest in Pla-Fit Holdings; and • the Continuing LLC Owners collectively hold 48,665,585 Holdings Units, representing 49.4% of the economic interest in Pla-Fit Holdings and 48,665,585 shares of Planet Fitness, Inc. Class B common stock, representing 49.4% of the voting power in the Company.

Earnings per share

Earnings per share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings per share	(9) Earnings per share Basic earnings per share of Class A common stock is computed by dividing net income attributable to Planet Fitness, Inc. by the weighted-average number of shares of Class A common stock outstanding during the same period. Diluted earnings per share of Class A common stock is computed by dividing net income attributable to Planet Fitness, Inc. by the weighted-average number of shares of Class A common stock outstanding adjusted to give effect to potentially dilutive securities. There were no shares of Class A or Class B common stock outstanding prior to August 6, 2015, therefore no earnings per share information has been presented for any period prior to that date. Shares of the Company’s Class B common stock do not share in the earnings or losses attributable to Planet Fitness, Inc. and are therefore not participating securities. As such, separate presentation of basic and diluted earnings per share of Class B common stock under the two-class method has not been presented. Shares of the Company’s Class B common stock are, however, considered potentially dilutive shares of Class A common stock because shares of Class B common stock, together with the related Holdings Units, are exchangeable into shares of Class A common stock on a one-for-one basis. The following table sets forth reconciliations used to compute basic and diluted earnings per share of Class A common stock: Net income per share: For the three months ended September 30, 2016 For the nine months ended September 30, 2016 August 6, 2015 through September 30, 2015 Numerator Net income $ 14,863 $ 49,300 $ 6,214 Less: net income attributable to non-controlling interests 11,438 38,374 4,593 Net income attributable to Planet Fitness, Inc. - basic $ 3,425 $ 10,926 $ 1,621 Reallocation of net income assuming conversion of Holdings Units - - 4,518 Incremental tax effect of reallocation of net income assuming conversion of Holdings Units - - (1,740 ) Net income attributable to Planet Fitness, Inc. - diluted $ 3,425 $ 10,926 $ 4,399 Denominator Weighted-average shares of Class A common stock outstanding - basic 44,668,875 39,394,318 35,661,284 Effect of dilutive securities: Class B common stock - - 63,048,456 Stock options 12,539 138 - Restricted stock units 4,282 3,030 - Weighted-average shares of Class A common stock outstanding - diluted 44,685,696 39,397,486 98,709,740 Earnings per share of Class A common stock - basic $ 0.08 $ 0.28 $ 0.05 Earnings per share of Class A common stock - diluted $ 0.08 $ 0.28 $ 0.04 Weighted average shares of Class B common stock of 53,898,536 and 59,218,127 for the three and nine months ended September 30, 2016, respectively, were evaluated under the if-converted method for potential dilutive effects and determined to be anti-dilutive. Weighted average stock options outstanding of 250,141 and 230,633 for the three and nine months ending September 30, 2016, respectively, were evaluated under the treasury stock method for potential dilutive effects and were determined to be anti-dilutive. Weighted average stock options outstanding of 116,690 and restricted stock units of 8,160 for the period from August 6, 2015 through September 30, 2015 were evaluated under the treasury stock method for potential dilutive effects and were determined to be anti-dilutive.

Income taxes

Income taxes	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income taxes	(10) Income taxes As a result of the recapitalization transactions, the Company became the sole managing member of Pla-Fit Holdings, which is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, Pla-Fit Holdings is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by Pla-Fit Holdings is passed through to and included in the taxable income or loss of its members, including the Company following the recapitalization transactions, on a pro rata basis. Planet Fitness, Inc. is subject to U.S. federal income taxes, in addition to state and local income taxes with respect to our allocable share of any taxable income of Pla-Fit Holdings following the recapitalization transactions. The Company is also subject to taxes in foreign jurisdictions. The Company incurs U.S. federal and state income taxes on its pro rata share of income flowed through from Pla-Fit Holdings. The effective tax rate on such income was approximately 39.5%. The provision for income taxes also reflects an effective state tax rate of 2.1% applied to non-controlling interests, excluding income from variable interest entities, related to Pla-Fit Holdings. Net deferred tax assets of $255,729 and $117,358 as of September 30, 2016 and December 31, 2015, respectively, relate primarily to the tax effects of temporary differences in the book basis as compared to the tax basis of Planet Fitness, Inc.’s investment in Pla-Fit Holdings as a result of the recapitalization transactions, IPO, and secondary offerings. The Company has net operating loss carryforwards related to its Canada operations of approximately $1,911, which begin to expire in 2034. It is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets. The net deferred tax liabilities of $1,275 as of September 30, 2016 and $0 as of December 31, 2015 relate primarily to the tax effects of temporary differences in the book basis as compared to the tax basis of certain assets of Pla-Fit Holdings. As of September 30, 2016, the total liability related to uncertain tax positions is $300. The Company recognizes interest accrued and penalties, if applicable, related to unrecognized tax benefits in income tax expense. Interest and penalties for the nine months ended September 30, 2016 were not material. Tax benefit arrangements The Company’s acquisition of Holdings Units in connection with the IPO, secondary offerings and future and certain past exchanges of Holdings Units for shares of the Company’s Class A common stock (or cash at the option of the Company) are expected to produce and have produced favorable tax attributes. In connection with the IPO, the Company entered into two tax receivable agreements. Under the first of those agreements, the Company generally is required to pay to the Continuing LLC Owners 85% of the applicable tax savings, if any, in U.S. federal and state income tax that the Company is deemed to realize as a result of certain tax attributes of their Holdings Units sold to the Company (or exchanged in a taxable sale) and that are created as a result of (i) the sales or exchanges of their Holdings Units for shares of Class A common stock and (ii) tax benefits attributable to payments made under the tax receivable agreement (including imputed interest). Under the second tax receivable agreement, the Company generally is required to pay to the Direct TSG Investors 85% of the amount of tax savings, if any, that the Company is deemed to realize as a result of the tax attributes of the Holdings Units held in respect of the Direct TSG Investors’ interest in the Company, which resulted from the Direct TSG Investors’ purchase of interests in Pla-Fit Holdings in 2012, and certain other tax benefits. Under both agreements, the Company generally retains the benefit of the remaining 15% of the applicable tax savings. Also, pursuant to the exchange agreement (see Note 8), to the extent an exchange results in Pla-Fit Holdings, LLC incurring a current tax liability relating to the New Hampshire business profits tax, the Continuing LLC Owners have agreed that they will contribute to Pla-Fit Holdings, LLC an amount sufficient to pay such tax liability (up to 3.5% of the value received upon exchange). If and when the Company subsequently realizes a related tax benefit, Pla-Fit Holdings, LLC will distribute the amount of any such tax benefit to the relevant Continuing LLC Owner in respect of its contribution. Due to changes in New Hampshire tax law, the Company no longer expects to incur any such liability under the New Hampshire business profits tax. In June 2016, in connection with the June Secondary Offering, 7,891,160 Holdings Units were redeemed by the participating Continuing LLC Owners for newly-issued shares of Class A common stock, resulting in an increase in the tax basis of the net assets of Pla-Fit Holdings subject to the provisions of the tax receivable agreements. As a result of the change in Planet Fitness, Inc.’s ownership percentage of Pla-Fit Holdings that occurred in conjunction with the exchange, we recorded a decrease to our net deferred tax assets of $7,638 during the three months ended June 30, 2016. As a result of the exchange, we also recognized a deferred tax asset in the amount of $89,876 and a corresponding tax benefit arrangement liability of $78,152, representing 85% of the tax benefits due to the participating Continuing LLC Owners. In September 2016, in connection with the September Secondary Offering, 5,406,019 Holdings Units were redeemed by the participating Continuing LLC Owners for newly-issued shares of Class A common stock, resulting in an increase in the tax basis of the net assets of Pla-Fit Holdings subject to the provisions of the tax receivable agreements. As a result of the change in Planet Fitness, Inc.’s ownership percentage of Pla-Fit Holdings that occurred in conjunction with the exchange, we recorded a decrease to our net deferred tax assets of $5,378 during the three months ended September 30, 2016. As a result of the exchange, we also recognized a deferred tax asset in the amount of $71,174 and a corresponding tax benefit arrangement liability of $61,735, representing 85% of the tax benefits due to the participating Continuing LLC Owners. As of September 30, 2016, the Company has a liability of $274,072 related to its projected obligations under the tax benefit arrangements. Projected future payments under the tax benefit arrangements are as follows: Amount Remainder of 2016 $ 922 2017 10,658 2018 13,438 2019 13,569 2020 13,910 Thereafter 221,575 Total $ 274,072

Commitments and contingencies

Commitments and contingencies	9 Months Ended
	Sep. 30, 2016
Commitments And Contingencies Disclosure [Abstract]
Commitments and contingencies	(11) Commitments and contingencies From time to time, and in the ordinary course of business, the Company is subject to various claims, charges, and litigation, such as employment-related claims and slip and fall cases. The Company is not currently aware of any legal proceedings or claims that the Company believes will have, individually or in the aggregate, a material adverse effect on the Company’s financial position or result of operations.

Segments

Segments	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Segments	(12) Segments The Company has three reportable segments: (i) Franchise; (ii) Corporate-owned stores; and (iii) Equipment. The Company’s operations are organized and managed by type of products and services and segment information is reported accordingly. The Company’s chief operating decision maker (the “CODM”) is its Chief Executive Officer. The CODM reviews financial performance and allocates resources by reportable segment. There have been no operating segments aggregated to arrive at the Company’s reportable segments. The Franchise segment includes operations related to the Company’s franchising business in the United States, Puerto Rico, Canada and the Dominican Republic. The Corporate-owned stores segment includes operations with respect to all Corporate-owned stores throughout the United States and Canada. The Equipment segment includes the sale of equipment to franchisee-owned stores. The accounting policies of the reportable segments are the same as those described in Note 2. The Company evaluates the performance of its segments and allocates resources to them based on revenue and earnings before interest, taxes, depreciation, and amortization, referred to as Segment EBITDA. Revenues for all operating segments include only transactions with unaffiliated customers and include no intersegment revenues. The tables below summarize the financial information for the Company’s reportable segments for the three and nine months ended September 30, 2016 and 2015. The “Corporate and other” category, as it relates to Segment EBITDA, primarily includes corporate overhead costs, such as payroll and related benefit costs and professional services which are not directly attributable to any individual segment. Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Revenue Franchise segment revenue - U.S. $ 26,940 $ 19,785 $ 83,312 $ 63,371 Franchise segment revenue - International 285 9 1,068 59 Franchise segment total 27,225 19,794 84,380 63,430 Corporate-owned stores - U.S. 25,591 24,203 75,595 71,716 Corporate-owned stores - International 1,084 950 3,161 1,958 Corporate-owned stores total 26,675 25,153 78,756 73,674 Equipment segment - U.S. 33,107 23,870 98,686 87,588 Equipment segment total 33,107 23,870 98,686 87,588 Total revenue $ 87,007 $ 68,817 $ 261,822 $ 224,692 Franchise segment revenue includes franchise revenue and commission income. Franchise revenue includes revenue generated from placement services of $2,224 and $1,623 for the three months ended September 30, 2016 and 2015, respectively and $6,952 and $5,895 for the nine months ended September 30, 2016 and 2015, respectively. Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Segment EBITDA Franchise $ 22,814 $ 15,496 $ 71,308 $ 46,778 Corporate-owned stores 10,550 9,256 30,259 26,342 Equipment 7,153 4,910 21,330 18,914 Corporate and other (6,823 ) (13,162 ) (20,147 ) (27,191 ) Total Segment EBITDA $ 33,694 $ 16,500 $ 102,750 $ 64,843 The following table reconciles total Segment EBITDA to income before income taxes: Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Total Segment EBITDA $ 33,694 $ 16,500 $ 102,750 $ 64,843 Less: Depreciation and amortization 7,745 7,976 23,127 24,160 Other (expense) income (204 ) (1,815 ) 30 (2,627 ) Income from operations 26,153 10,339 79,593 43,310 Interest expense, net (6,291 ) (6,556 ) (18,819 ) (17,872 ) Other (expense) income (204 ) (1,815 ) 30 (2,627 ) Income before income taxes $ 19,658 $ 1,968 $ 60,804 $ 22,811 The following table summarizes the Company’s assets by reportable segment: September 30, 2016 December 31, 2015 Franchise $ 204,137 $ 206,997 Corporate-owned stores 157,509 151,620 Equipment 210,997 208,168 Unallocated 279,695 132,392 Total consolidated assets $ 852,338 $ 699,177 The table above includes $2,940 and $3,149 of long-lived assets located in the Company’s corporate-owned stores in Canada as of September 30, 2016 and December 31, 2015 The following table summarizes the Company’s goodwill by reportable segment: September 30, 2016 December 31, 2015 Franchise $ 16,938 $ 16,938 Corporate-owned stores 67,377 67,377 Equipment 92,666 92,666 Consolidated goodwill $ 176,981 $ 176,981

Corporate-owned and franchisee-

Corporate-owned and franchisee-owned stores	9 Months Ended
	Sep. 30, 2016
Other Industries [Abstract]
Corporate-owned and franchisee-owned stores	(13) Corporate-owned and franchisee-owned stores The following table shows changes in our corporate-owned and franchisee-owned stores for the three months ended September 30, 2016 and 2015: For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Franchisee-owned stores: Stores operated at beginning of period 1,148 956 1,066 863 New stores opened 37 26 121 122 Stores debranded or consolidated (1) (1 ) - (3 ) (3 ) Stores operated at end of period 1,184 982 1,184 982 Corporate-owned stores: Stores operated at beginning of period 58 58 58 55 New stores opened - - - 3 Stores operated at end of period 58 58 58 58 Total stores: Stores operated at beginning of period 1,206 1,014 1,124 918 New stores opened 37 26 121 125 Stores debranded or consolidated (1) (1 ) - (3 ) (3 ) Stores operated at end of period 1,242 1,040 1,242 1,040 (1) The term “debrand” refers to a franchisee-owned store whose right to use the Planet Fitness brand and marks has been terminated in accordance with the franchise agreement. We retain the right to prevent debranded stores from continuing to operate as fitness centers. The term “consolidated” refers to the combination of a franchisee’s store with another store located in close proximity, with our prior approval. This often coincides with an enlargement, re-equipment and/or refurbishment of the remaining store.

Summary of significant accoun21

Summary of significant accounting policies (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Basis of presentation and consolidation	(a) Basis of presentation and consolidation The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Accordingly, these interim financial statements do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the results of operations, financial position and cash flows for the periods presented have been reflected. All significant intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements as of and for the three and nine months ended September 30, 2016 and 2015 are unaudited. The condensed consolidated balance sheet as of December 31, 2015 has been derived from the audited financial statements at that date but does not include all of the disclosures required by U.S. GAAP. These interim condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (the “Annual Report”) filed with the SEC on March 4, 2016 . As discussed in Note 1, as a result of the recapitalization transactions, Planet Fitness, Inc. consolidates Pla-Fit Holdings and Pla-Fit Holdings is considered to be the predecessor to Planet Fitness, Inc. for accounting and reporting purposes. The Company also consolidates entities in which it has a controlling financial interest, the usual condition of which is ownership of a majority voting interest. The Company also considers for consolidation certain interests where the controlling financial interest may be achieved through arrangements that do not involve voting interests. Such an entity, known as a variable interest entity (“VIE”), is required to be consolidated by its primary beneficiary. The primary beneficiary of a VIE is considered to possess the power to direct the activities of the VIE that most significantly impact its economic performance and has the obligation to absorb losses or the rights to receive benefits from the VIE that are significant to it. The principal entities in which the Company possesses a variable interest include franchise entities and certain other entities. The Company is not deemed to be the primary beneficiary for Planet Fitness franchise entities. Therefore, these entities are not consolidated. The results of the Company have been consolidated with Matthew Michael Realty LLC (“MMR”) and PF Melville LLC (“PF Melville”) based on the determination that the Company is the primary beneficiary with respect to these VIEs. These entities are real estate holding companies that derive a majority of their financial support from the Company through lease agreements for corporate stores. See Note 3 for further information related to the Company’s VIEs.
Use of estimates	(b) Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates are based on management’s knowledge of current events and actions it may undertake in the future, they may ultimately differ from actual results. Significant areas where estimates and judgments are relied upon by management in the preparation of the consolidated financial statements include revenue recognition, valuation of assets and liabilities in connection with acquisitions, valuation of equity-based compensation awards, the evaluation of the recoverability of goodwill and long-lived assets, including intangible assets, income taxes, including deferred tax assets and liabilities and reserves for unrecognized tax benefits, and the liability for the Company’s tax benefit arrangements.
Fair Value	(c) Fair Value ASC 820, Fair Value Measurements and Disclosures Level 1—Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2—Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3—Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The table below presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015: Quoted Significant Total fair prices other Significant value at in active observable unobservable September 30, markets inputs inputs 2016 (Level 1) (Level 2) (Level 3) Interest rate caps $ 134 $ — $ 134 $ — Quoted Significant Total fair prices other Significant value at in active observable unobservable December 31, markets inputs inputs 2015 (Level 1) (Level 2) (Level 3) Interest rate caps $ 1,147 $ — $ 1,147 $ —
Recent accounting pronouncements	(d) Recent accounting pronouncements The FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, The FASB issued ASU No. 2015-02, Income Statement—Consolidation The FASB issued ASU No. 2015-05: Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement The FASB issued ASU No. 2016-02, Leases The FASB issued ASU No. 2016-09, Stock Compensation The FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments

Summary of significant accoun22

Summary of significant accounting policies (Tables)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Company's Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015: Quoted Significant Total fair prices other Significant value at in active observable unobservable September 30, markets inputs inputs 2016 (Level 1) (Level 2) (Level 3) Interest rate caps $ 134 $ — $ 134 $ — Quoted Significant Total fair prices other Significant value at in active observable unobservable December 31, markets inputs inputs 2015 (Level 1) (Level 2) (Level 3) Interest rate caps $ 1,147 $ — $ 1,147 $ —

Variable interest entities (Tab

Variable interest entities (Tables)	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Carrying Value of Variable Interest Entities of Consolidated Financial Statements	The carrying values of VIEs included in the consolidated financial statements as of September 30, 2016 and December 31, 2015 are as follows: September 30, 2016 December 31, 2015 Assets Liabilities Assets Liabilities PF Melville $ 3,984 $ — $ 3,728 $ — MMR 3,105 — 2,953 — Total $ 7,089 $ — $ 6,681 $ —

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Goodwill and Intangible Assets	A summary of goodwill and intangible assets at September 30, 2016 and December 31, 2015 is as follows: Weighted average Gross amortization carrying Accumulated Net carrying September 30, 2016 period (years) amount amortization Amount Customer relationships 11.1 $ 171,782 (68,926 ) $ 102,856 Noncompete agreements 5.0 14,500 (11,302 ) 3,198 Favorable leases 7.5 2,935 (1,549 ) 1,386 Order backlog 0.4 3,400 (3,400 ) — Reacquired franchise rights 5.8 8,950 (3,891 ) 5,059 201,567 (89,068 ) 112,499 Indefinite-lived intangible: Trade and brand names N/A 146,300 — 146,300 Total intangible assets $ 347,867 $ (89,068 ) $ 258,799 Goodwill $ 176,981 $ — $ 176,981 Weighted average Gross amortization carrying Accumulated Net carrying December 31, 2015 period (years) amount amortization Amount Customer relationships 11.1 $ 171,782 $ (57,741 ) $ 114,041 Noncompete agreements 5.0 14,500 (9,127 ) 5,373 Favorable leases 7.5 2,935 (1,256 ) 1,679 Order backlog 0.4 3,400 (3,400 ) — Reacquired franchise rights 5.8 8,950 (2,724 ) 6,226 201,567 (74,248 ) 127,319 Indefinite-lived intangible: Trade and brand names N/A 146,300 — 146,300 Total intangible assets $ 347,867 $ (74,248 ) $ 273,619 Goodwill $ 176,981 $ — $ 176,981
Summary of Amortization expenses	The anticipated annual amortization expense to be recognized in future years as of September 30, 2016 is as follows: Amount Remainder of 2016 $ 4,936 2017 18,215 2018 14,583 2019 14,215 2020 12,517 Thereafter 48,033 Total $ 112,499

Long-term debt (Tables)

Long-term debt (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt as of September 30, 2016 and December 31, 2015 consists of the following: September 30, 2016 December 31, 2015 Term loan B requires quarterly installments plus interest through the term of the loan, maturing March 31, 2021. Outstanding borrowings bear interest at LIBOR or base rate (as defined) plus a margin at the election of the borrower (4.50% at September 30, 2016 and 4.75% at December 31, 2015) $ 488,450 $ 492,275 Revolving credit line, requires interest only payments through the term of the loan, maturing March 31, 2019. Outstanding borrowings bear interest at LIBOR or base rate (as defined) plus a margin at the election of the borrower (4.25% at September 30, 2016 and December 31, 2015) — — Total debt, excluding deferred financing costs $ 488,450 492,275 Deferred financing costs, net of accumulated amortization (6,283 ) (7,396 ) Total debt 482,167 484,879 Current portion of long-term debt and line of credit 5,100 5,100 Long-term debt, net of current portion $ 477,067 $ 479,779
Schedule of Future Annual Payments of Long-term Debt	Future annual principal payments of long-term debt as of September 30, 2016 are as follows: Amount Remainder of 2016 $ 1,275 2017 5,100 2018 5,100 2019 5,100 2020 5,100 Thereafter 466,775 Total $ 488,450

Related party transactions (Tab

Related party transactions (Tables)	9 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Summary of Amounts Due From Stockholders/Members	Amounts due from related parties consist of: September 30, 2016 December 31, 2015 Accounts receivable – related entities $ 31 $ 39 Accounts receivable – stockholders/members 66 4,901 Due from related parties $ 97 $ 4,940 Accounts payable – related entities 3,966 — Due to related parties $ 3,966 $ —
Schedule of Related Party Transactions	Activity with entities considered to be related parties is summarized below: For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Franchise revenue $ 359 $ 298 $ 1,174 $ 868 Equipment revenue 3 425 770 1,108 Total revenue from related parties $ 362 $ 723 $ 1,944 $ 1,976

Earnings per share (Tables)

Earnings per share (Tables)	9 Months Ended
	Sep. 30, 2016
Class A Common Stock [Member]
Earnings Per Share Basic [Line Items]
Reconciliation of Numerators and Denominators Used to Compute Basic and Diluted Earnings per Share	The following table sets forth reconciliations used to compute basic and diluted earnings per share of Class A common stock: Net income per share: For the three months ended September 30, 2016 For the nine months ended September 30, 2016 August 6, 2015 through September 30, 2015 Numerator Net income $ 14,863 $ 49,300 $ 6,214 Less: net income attributable to non-controlling interests 11,438 38,374 4,593 Net income attributable to Planet Fitness, Inc. - basic $ 3,425 $ 10,926 $ 1,621 Reallocation of net income assuming conversion of Holdings Units - - 4,518 Incremental tax effect of reallocation of net income assuming conversion of Holdings Units - - (1,740 ) Net income attributable to Planet Fitness, Inc. - diluted $ 3,425 $ 10,926 $ 4,399 Denominator Weighted-average shares of Class A common stock outstanding - basic 44,668,875 39,394,318 35,661,284 Effect of dilutive securities: Class B common stock - - 63,048,456 Stock options 12,539 138 - Restricted stock units 4,282 3,030 - Weighted-average shares of Class A common stock outstanding - diluted 44,685,696 39,397,486 98,709,740 Earnings per share of Class A common stock - basic $ 0.08 $ 0.28 $ 0.05 Earnings per share of Class A common stock - diluted $ 0.08 $ 0.28 $ 0.04

Income taxes (Tables)

Income taxes (Tables)	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Schedule of Future Payments Under Tax Benefit Arrangements	Projected future payments under the tax benefit arrangements are as follows: Amount Remainder of 2016 $ 922 2017 10,658 2018 13,438 2019 13,569 2020 13,910 Thereafter 221,575 Total $ 274,072

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Summary of Financial Information for the Company's Reportable Segments	The tables below summarize the financial information for the Company’s reportable segments for the three and nine months ended September 30, 2016 and 2015. Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Revenue Franchise segment revenue - U.S. $ 26,940 $ 19,785 $ 83,312 $ 63,371 Franchise segment revenue - International 285 9 1,068 59 Franchise segment total 27,225 19,794 84,380 63,430 Corporate-owned stores - U.S. 25,591 24,203 75,595 71,716 Corporate-owned stores - International 1,084 950 3,161 1,958 Corporate-owned stores total 26,675 25,153 78,756 73,674 Equipment segment - U.S. 33,107 23,870 98,686 87,588 Equipment segment total 33,107 23,870 98,686 87,588 Total revenue $ 87,007 $ 68,817 $ 261,822 $ 224,692 Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Segment EBITDA Franchise $ 22,814 $ 15,496 $ 71,308 $ 46,778 Corporate-owned stores 10,550 9,256 30,259 26,342 Equipment 7,153 4,910 21,330 18,914 Corporate and other (6,823 ) (13,162 ) (20,147 ) (27,191 ) Total Segment EBITDA $ 33,694 $ 16,500 $ 102,750 $ 64,843
Reconciliation of Total Segment EBITDA to Income Before Income Taxes	The following table reconciles total Segment EBITDA to income before income taxes: Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Total Segment EBITDA $ 33,694 $ 16,500 $ 102,750 $ 64,843 Less: Depreciation and amortization 7,745 7,976 23,127 24,160 Other (expense) income (204 ) (1,815 ) 30 (2,627 ) Income from operations 26,153 10,339 79,593 43,310 Interest expense, net (6,291 ) (6,556 ) (18,819 ) (17,872 ) Other (expense) income (204 ) (1,815 ) 30 (2,627 ) Income before income taxes $ 19,658 $ 1,968 $ 60,804 $ 22,811
Summary of Company's Assets by Reportable Segment	The following table summarizes the Company’s assets by reportable segment: September 30, 2016 December 31, 2015 Franchise $ 204,137 $ 206,997 Corporate-owned stores 157,509 151,620 Equipment 210,997 208,168 Unallocated 279,695 132,392 Total consolidated assets $ 852,338 $ 699,177
Summary of Company's Goodwill by Reportable Segment	The following table summarizes the Company’s goodwill by reportable segment: September 30, 2016 December 31, 2015 Franchise $ 16,938 $ 16,938 Corporate-owned stores 67,377 67,377 Equipment 92,666 92,666 Consolidated goodwill $ 176,981 $ 176,981

Corporate-owned and franchise30

Corporate-owned and franchisee-owned stores (Tables)	9 Months Ended
	Sep. 30, 2016
Other Industries [Abstract]
Schedule of Changes in Corporate-owned and Franchisee-owned Stores	The following table shows changes in our corporate-owned and franchisee-owned stores for the three months ended September 30, 2016 and 2015: For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Franchisee-owned stores: Stores operated at beginning of period 1,148 956 1,066 863 New stores opened 37 26 121 122 Stores debranded or consolidated (1) (1 ) - (3 ) (3 ) Stores operated at end of period 1,184 982 1,184 982 Corporate-owned stores: Stores operated at beginning of period 58 58 58 55 New stores opened - - - 3 Stores operated at end of period 58 58 58 58 Total stores: Stores operated at beginning of period 1,206 1,014 1,124 918 New stores opened 37 26 121 125 Stores debranded or consolidated (1) (1 ) - (3 ) (3 ) Stores operated at end of period 1,242 1,040 1,242 1,040 (1) The term “debrand” refers to a franchisee-owned store whose right to use the Planet Fitness brand and marks has been terminated in accordance with the franchise agreement. We retain the right to prevent debranded stores from continuing to operate as fitness centers. The term “consolidated” refers to the combination of a franchisee’s store with another store located in close proximity, with our prior approval. This often coincides with an enlargement, re-equipment and/or refurbishment of the remaining store.

Business Organization - Additio

Business Organization - Additional Information (Detail)	Sep. 28, 2016$ / sharesshares	Jun. 28, 2016$ / sharesshares	Aug. 11, 2015shares	Aug. 05, 2015shares	Sep. 30, 2016StoreState$ / sharesshares	Jun. 30, 2016Store$ / sharesshares	Sep. 30, 2016MemberStoreState$ / sharesshares	Sep. 27, 2016	Jun. 27, 2016	Dec. 31, 2015Store	Sep. 30, 2015Store	Jun. 30, 2015Store	Dec. 31, 2014Store
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of members | Member							8,700,000
Number of owned and franchised locations | Store					1,242	1,206	1,242			1,124	1,040	1,014	918
Number of states in which entity operates | State					47		47
Date of formation							Mar. 16, 2015
Continuing LLC Owners [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of economic interest					49.40%		49.40%	54.90%	62.90%
Class A Common Stock [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of stock issued during period	8,000,000	11,500,000			8,000,000	11,500,000
Share price | $ / shares	$ 19.62	$ 16.50			$ 19.62	$ 16.50	$ 19.62
Class A Common Stock [Member] | Direct TSG Investors [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of stock issued during period	2,593,981	3,608,840	5,033,945		2,593,981	3,608,840
Class A Common Stock [Member] | Continuing LLC Owners [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of stock issued during period	5,406,019	7,891,160			5,406,019	7,891,160
Number of shares exchanged					5,406,019	7,891,160
Class B Common Stock [Member] | Continuing LLC Owners [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of stock issued during period				72,602,810
Number of shares exchanged	5,406,019	7,891,160			5,406,019	7,891,160
Pla-Fit Holdings, LLC [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of ownership				100.00%	100.00%		100.00%	100.00%	100.00%
Number of units held by owners	5,406,019	7,891,160			5,406,019	7,891,160	5,406,019
Percentage of economic interest					50.60%		50.60%	45.10%	37.10%
Pla-Fit Holdings, LLC [Member] | Class B Common Stock [Member] | Continuing LLC Owners [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of stock issued during period				72,602,810
Planet Intermediate, LLC [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of ownership				100.00%
Planet Fitness Holdings, LLC [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of ownership				100.00%

Summary of Significant Accoun32

Summary of Significant Accounting Policies - Summary of Company's Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Interest Rate Cap [Member] - Fair Value Measurements Recurring - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate caps	$ 134	$ 1,147
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate caps	$ 134	$ 1,147

Variable Interest Entities - Ca

Variable Interest Entities - Carrying Value of Variable Interest Entities of Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Assets	$ 7,089	$ 6,681
PF Melville [Member]
Variable Interest Entity [Line Items]
Assets	3,984	3,728
MMR [Member]
Variable Interest Entity [Line Items]
Assets	$ 3,105	$ 2,953

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Variable Interest Entity Consolidated Carrying Amount Assets And Liabilities [Abstract]
Maximum obligation of guarantees of leases and debt	$ 1,459,000	$ 1,871,000
Maximum loss exposure Involvement of estimated value	$ 0

Goodwill and Intangible Asset35

Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Goodwill And Intangible Assets [Line Items]
Total intangible assets, Gross carrying amount	$ 347,867	$ 347,867
Gross carrying amount	201,567	201,567
Accumulated amortization	(89,068)	(74,248)
Net carrying Amount	112,499	127,319
Total intangible assets, Net carrying Amount	258,799	273,619
Goodwill, Gross carrying amount	176,981	176,981
Goodwill, Net carrying Amount	176,981	176,981
Trade and Brand Names [Member]
Goodwill And Intangible Assets [Line Items]
Indefinite-lived intangible, Net carrying Amount	$ 146,300	$ 146,300
Customer Relationships [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average amortization period (years)	11 years 1 month 6 days	11 years 1 month 6 days
Gross carrying amount	$ 171,782	$ 171,782
Accumulated amortization	(68,926)	(57,741)
Net carrying Amount	$ 102,856	$ 114,041
Noncompete Agreements [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average amortization period (years)	5 years	5 years
Gross carrying amount	$ 14,500	$ 14,500
Accumulated amortization	(11,302)	(9,127)
Net carrying Amount	$ 3,198	$ 5,373
Favorable Leases [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average amortization period (years)	7 years 6 months	7 years 6 months
Gross carrying amount	$ 2,935	$ 2,935
Accumulated amortization	(1,549)	(1,256)
Net carrying Amount	$ 1,386	$ 1,679
Order Backlog [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average amortization period (years)	4 months 24 days	4 months 24 days
Gross carrying amount	$ 3,400	$ 3,400
Accumulated amortization	$ (3,400)	$ (3,400)
Reacquired Franchise Rights [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average amortization period (years)	5 years 9 months 18 days	5 years 9 months 18 days
Gross carrying amount	$ 8,950	$ 8,950
Accumulated amortization	(3,891)	(2,724)
Net carrying Amount	$ 5,059	$ 6,226

Goodwill and Intangible Asset36

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Goodwill And Intangible Assets [Line Items]
Impairment charges			$ 0		$ 0
Amortization of intangible assets	$ 4,940,000	$ 5,404,000	14,820,000	$ 16,181,000
Favorable And Unfavorable Leases [Member]
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	$ 97,000	$ 143,000	$ 292,000	$ 380,000

Goodwill and Intangible Asset37

Goodwill and Intangible Assets - Summary of Amortization expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2016	$ 4,936
2,017	18,215
2,018	14,583
2,019	14,215
2,020	12,517
Thereafter	48,033
Net carrying Amount	$ 112,499	$ 127,319

Long-term Debt - Schedule of Lo

Long-term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt, excluding deferred financing costs	$ 488,450	$ 492,275
Deferred financing costs, net of accumulated amortization	(6,283)	(7,396)
Total debt	482,167	484,879
Current portion of long-term debt and line of credit	5,100	5,100
Long-term debt, net of current portion	477,067	479,779
Term Loan B [Member]
Debt Instrument [Line Items]
Total debt, excluding deferred financing costs	$ 488,450	$ 492,275

Long-term Debt - Schedule of 39

Long-term Debt - Schedule of Long-term Debt (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	Mar. 31, 2019	Mar. 31, 2019
Total rate - base plus spread	4.25%	4.25%
Term Loan B [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	Mar. 31, 2021	Mar. 31, 2021
Total rate - base plus spread	4.50%	4.75%

Long-term Debt - Schedule of Fu

Long-term Debt - Schedule of Future Annual Payments of Long-term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Remainder of 2016	$ 1,275
2,017	5,100
2,018	5,100
2,019	5,100
2,020	5,100
Thereafter	466,775
Total	$ 488,450	$ 492,275

Derivative Instruments and He41

Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, interest rate cap floor	1.50%		1.50%
Unrealized loss on interest rate caps, net of tax	$ 193,000	$ (557,000)	$ (469,000)	$ (1,497,000)
Interest Rate Cap [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, notional amount	209,000,000		209,000,000
Interest rate caps	$ 134,000		134,000		$ 1,147,000
Unrealized loss on interest rate caps, net of tax			(469,000)
Unrealized loss on interest rate caps, tax			$ (83,000)

Related Party Transactions - Su

Related Party Transactions - Summary of Amounts Due From Stockholders/Members (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Related Party Transaction Due From To Related Party Current [Abstract]
Accounts receivable – related entities	$ 31	$ 39
Accounts receivable – stockholders/members	66	4,901
Due from related parties	97	$ 4,940
Accounts payable – related entities	3,966
Due to related parties	$ 3,966

Related Party Transactions - Sc

Related Party Transactions - Schedule of Related Party Transactions (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Related Party Transaction [Line Items]
Total revenue from related parties	$ 362	$ 723	$ 1,944	$ 1,976
Franchise [Member]
Related Party Transaction [Line Items]
Total revenue from related parties	359	298	1,174	868
Equipment [Member]
Related Party Transaction [Line Items]
Total revenue from related parties	$ 3	$ 425	$ 770	$ 1,108

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Direct TSG Investors [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Related Party Transaction [Line Items]
Payment for management fee	$ 0	$ 1,384	$ 0	$ 1,899
Management Agreement Termination [Member]
Related Party Transaction [Line Items]
Management agreement termination fee		$ 1,000		$ 1,000

Stockholder's Equity - Addition

Stockholder's Equity - Additional Information (Detail) - USD ($)	Sep. 28, 2016	Jun. 28, 2016	Aug. 11, 2015	Aug. 05, 2015	Jun. 22, 2015	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015	Aug. 06, 2015
Class Of Stock [Line Items]
Convertible stock, conversion description									Following the Merger and the Reclassification, the Company and the Continuing LLC Owners entered into an exchange agreement under which the Continuing LLC Owners (or certain permitted transferees thereof) have the right, from time to time and subject to the terms of the exchange agreement, to exchange their Holdings Units, along with a corresponding number of shares of Class B common stock, for shares of Class A common stock (or cash at the option of the Company) on a one-for-one basis, subject to customary conversion rate adjustments for stock splits, stock dividends, reclassifications and similar transactions.
Pla-Fit Holdings, LLC [Member]
Class Of Stock [Line Items]
Number of units held by owners	5,406,019	7,891,160				5,406,019	7,891,160	5,406,019	5,406,019
Continuing LLC Owners [Member] | IPO and Secondary Offering [Member]
Class Of Stock [Line Items]
Percentage of economic interest								49.40%
Number of units held by owners						48,665,585		48,665,585	48,665,585
Class A Common Stock [Member]
Class Of Stock [Line Items]
Number of stock issued during period	8,000,000	11,500,000				8,000,000	11,500,000
Common stock, shares outstanding			36,597,985			49,914,000		49,914,000	49,914,000	36,598,000	0
Share price	$ 19.62	$ 16.50				$ 19.62	$ 16.50	$ 19.62	$ 19.62
Proceeds from sale of shares	$ 0	$ 0
Class A Common Stock [Member] | Direct TSG Investors [Member]
Class Of Stock [Line Items]
Number of shares converted					26,106,930
Number of stock issued during period	2,593,981	3,608,840	5,033,945			2,593,981	3,608,840
Class A Common Stock [Member] | Direct TSG Investors [Member] | IPO and Secondary Offering [Member]
Class Of Stock [Line Items]
Number of stock issued during period								14,870,164
Percentage of economic interest								15.10%
Percentage of voting power						15.10%		15.10%	15.10%
Class A Common Stock [Member] | Continuing LLC Owners [Member]
Class Of Stock [Line Items]
Number of stock issued during period	5,406,019	7,891,160				5,406,019	7,891,160
Number of shares exchanged						5,406,019	7,891,160
Class A Common Stock [Member] | Continuing LLC Owners [Member] | Pla-Fit Holdings, LLC [Member] | IPO [Member]
Class Of Stock [Line Items]
Number of stock issued during period			10,491,055
Aggregate amount of units issued			$ 156,946,000
Class A Common Stock [Member] | Investor | IPO and Secondary Offering [Member]
Class Of Stock [Line Items]
Number of stock issued during period								35,043,641
Percentage of economic interest								35.50%
Percentage of voting power						35.50%		35.50%	35.50%
Class B Common Stock [Member]
Class Of Stock [Line Items]
Common stock, shares outstanding						48,665,000		48,665,000	48,665,000	62,112,000	0
Class B Common Stock [Member] | Continuing LLC Owners [Member]
Class Of Stock [Line Items]
Number of stock issued during period				72,602,810
Common stock dividend and voting rights description									The shares of Class B common stock have no rights to dividends or distributions, whether in cash or stock, but entitle the holder to one vote per share on matters presented to stockholders of the Company.
Number of shares exchanged	5,406,019	7,891,160				5,406,019	7,891,160
Class B Common Stock [Member] | Continuing LLC Owners [Member] | IPO and Secondary Offering [Member]
Class Of Stock [Line Items]
Percentage of voting power						49.40%		49.40%	49.40%
Number of units held by owners						48,665,585		48,665,585	48,665,585
Class B Common Stock [Member] | Continuing LLC Owners [Member] | Pla-Fit Holdings, LLC [Member]
Class Of Stock [Line Items]
Number of stock issued during period				72,602,810
Merger Agreement [Member] | Class A Common Stock [Member] | Direct TSG Investors [Member]
Class Of Stock [Line Items]
Number of shares converted					26,106,930

Earnings per share - Additional

Earnings per share - Additional Information (Detail) - shares	2 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015	Aug. 11, 2015	Aug. 06, 2015
Restricted Stock Units [Member]
Earnings Per Share Diluted [Line Items]
Anti-dilutive securities excluded from the calculation of earnings per share	8,160
Stock Options [Member]
Earnings Per Share Diluted [Line Items]
Anti-dilutive securities excluded from the calculation of earnings per share	116,690	250,141	230,633
Class A Common Stock [Member]
Earnings Per Share Diluted [Line Items]
Common stock, shares outstanding		49,914,000	49,914,000	36,598,000	36,597,985	0
Class B Common Stock [Member]
Earnings Per Share Diluted [Line Items]
Common stock, shares outstanding		48,665,000	48,665,000	62,112,000		0
Class B Common Stock [Member] | Continuing LLC Owners Exchange Agreement
Earnings Per Share Diluted [Line Items]
Anti-dilutive securities excluded from the calculation of earnings per share		53,898,536	59,218,127

Earnings per share - Reconcilia

Earnings per share - Reconciliation of Numerators and Denominators Used to Compute Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended				9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Numerator
Net income	$ 6,214	$ 14,863		$ 738		$ 49,300		$ 20,890
Less: net income attributable to non-controlling interests	4,593	11,438		$ 4,631		38,374		$ 4,857
Net income attributable to Planet Fitness, Inc. - basic	1,621	3,425				10,926
Incremental tax effect of reallocation of net income assuming conversion of Holdings Units	(1,740)
Net income attributable to Planet Fitness, Inc. - diluted	4,399	$ 3,425				$ 10,926
Restricted Stock Units [Member]
Effect of dilutive securities:
Weighted-average shares outstanding adjustment		4,282				3,030
Stock Options [Member]
Effect of dilutive securities:
Weighted-average shares outstanding adjustment		12,539				138
Conversion Of Holdings Units [Member]
Numerator
Reallocation of net income assuming conversion of Holdings Units	$ 4,518
Class A Common Stock [Member]
Denominator
Weighted-average shares of Class A common stock outstanding - basic	35,661,284	44,668,875	[1]	35,661	[1]	39,394,318	[1]	35,661	[1]
Effect of dilutive securities:
Weighted-average shares of Class A common stock outstanding - diluted	98,709,740	44,685,696	[1]	98,710	[1]	39,397,486	[1]	98,710	[1]
Earnings per share of Class A common stock - basic	$ 0.05	$ 0.08	[1]	$ 0.05	[1]	$ 0.28	[1]	$ 0.05	[1]
Earnings per share of Class A common stock - diluted	$ 0.04	$ 0.08	[1]	$ 0.04	[1]	$ 0.28	[1]	$ 0.04	[1]
Class B Common Stock [Member]
Effect of dilutive securities:
Weighted-average shares outstanding adjustment	63,048,456
[1]	For the three and nine months ended September 30, 2015, represents earnings per share of Class A common stock and weighted-average shares of Class A common stock outstanding for the period from August 6, 2015 through September 30, 2015, the period following the recapitalization transactions and IPO (see Note 9).

Income Taxes - Additional infor

Income Taxes - Additional information (Detail) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)shares	Jun. 30, 2016USD ($)shares	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Sep. 30, 2016USD ($)Agreement	Dec. 31, 2015USD ($)
Tax Credit Carryforward [Line Items]
Effective income tax rate					39.50%
Effective income tax rate reconciliation noncontrolling interest					2.10%
Net deferred tax assets	$ 255,729		$ 255,729		$ 255,729	$ 117,358
Net deferred tax liabilities	1,275		1,275		1,275	$ 0
Total liability related to uncertain tax positions	$ 300		$ 300		$ 300
Number of tax receivable agreements | Agreement					2
Applicable percentage of cash savings	85.00%	85.00%	85.00%	85.00%	85.00%
Percentage of remaining tax savings					15.00%
Income tax rate maximum tax liability					3.50%
Tax benefit obligation	$ 274,072		$ 274,072		$ 274,072
Continuing LLC Owners [Member]
Tax Credit Carryforward [Line Items]
Decrease in deferred tax assets			(5,378)	$ (7,638)
Deferred tax asset	71,174	$ 89,876	71,174	89,876	71,174
Deferred tax liability	$ 61,735	$ 78,152	61,735	$ 78,152	61,735
Class A Common Stock [Member] | Continuing LLC Owners [Member]
Tax Credit Carryforward [Line Items]
Number of shares exchanged | shares	5,406,019	7,891,160
Canada [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carryforwards	$ 1,911		$ 1,911		$ 1,911
Operating loss carryforwards, expiration date					2,034

Income Taxes - Schedule of Futu

Income Taxes - Schedule of Future Payments Under Tax Benefit Arrangements (Detail) $ in Thousands	Sep. 30, 2016USD ($)
Income Tax Contingency [Line Items]
Total	$ 274,072
IPO [Member]
Income Tax Contingency [Line Items]
Remainder of 2016	922
2,017	10,658
2,018	13,438
2,019	13,569
2,020	13,910
Thereafter	221,575
Total	$ 274,072

Segments - Additional Informati

Segments - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)Segment	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment			3
Number of operating segments | Segment			0
Description of factors used to identify entity's reportable segments			No operating segments aggregated to arrive at the Company?s reportable segments
Revenue	$ 87,007,000	$ 68,817,000	$ 261,822,000	$ 224,692,000
Franchise [Member]
Segment Reporting Information [Line Items]
Revenue	27,225,000	19,794,000	84,380,000	63,430,000
Franchise [Member] | Placement Services [Member]
Segment Reporting Information [Line Items]
Revenue	2,224,000	1,623,000	6,952,000	5,895,000
Corporate-owned Stores [Member]
Segment Reporting Information [Line Items]
Revenue	26,675,000	$ 25,153,000	78,756,000	$ 73,674,000
Corporate-owned Stores [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 2,940,000		2,940,000		$ 3,149,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue			$ 0

Segments - Summary of Financial

Segments - Summary of Financial Information for the Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenue	$ 87,007	$ 68,817	$ 261,822	$ 224,692
Total Segment EBITDA	33,694	16,500	102,750	64,843
Corporate And Other Non Segment [Member]
Segment Reporting Information [Line Items]
Total Segment EBITDA	(6,823)	(13,162)	(20,147)	(27,191)
Franchise [Member]
Segment Reporting Information [Line Items]
Revenue	27,225	19,794	84,380	63,430
Franchise [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Segment EBITDA	22,814	15,496	71,308	46,778
Franchise [Member] | US [Member]
Segment Reporting Information [Line Items]
Revenue	26,940	19,785	83,312	63,371
Franchise [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue	285	9	1,068	59
Corporate-owned Stores [Member]
Segment Reporting Information [Line Items]
Revenue	26,675	25,153	78,756	73,674
Corporate-owned Stores [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Segment EBITDA	10,550	9,256	30,259	26,342
Corporate-owned Stores [Member] | US [Member]
Segment Reporting Information [Line Items]
Revenue	25,591	24,203	75,595	71,716
Corporate-owned Stores [Member] | International [Member]
Segment Reporting Information [Line Items]
Revenue	1,084	950	3,161	1,958
Equipment [Member]
Segment Reporting Information [Line Items]
Revenue	33,107	23,870	98,686	87,588
Equipment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Segment EBITDA	7,153	4,910	21,330	18,914
Equipment [Member] | US [Member]
Segment Reporting Information [Line Items]
Revenue	$ 33,107	$ 23,870	$ 98,686	$ 87,588

Segments - Reconciliation of To

Segments - Reconciliation of Total Segment EBITDA to Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting [Abstract]
Total Segment EBITDA	$ 33,694	$ 16,500	$ 102,750	$ 64,843
Depreciation and amortization	7,745	7,976	23,127	24,160
Other (expense) income	(204)	(1,815)	30	(2,627)
Income from operations	26,153	10,339	79,593	43,310
Interest expense, net	(6,291)	(6,556)	(18,819)	(17,872)
Income before income taxes	$ 19,658	$ 1,968	$ 60,804	$ 22,811

Segments - Summary of Company's

Segments - Summary of Company's Assets by Reportable Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated assets	$ 852,338	$ 699,177
Operating Segments [Member] | Franchise [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated assets	204,137	206,997
Operating Segments [Member] | Corporate-owned Stores [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated assets	157,509	151,620
Operating Segments [Member] | Equipment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated assets	210,997	208,168
Unallocated [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total consolidated assets	$ 279,695	$ 132,392

Segments - Summary of Company54

Segments - Summary of Company's Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Segment Reporting Other Significant Reconciling Item [Line Items]
Goodwill, Net carrying Amount	$ 176,981	$ 176,981
Franchise [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Goodwill, Net carrying Amount	16,938	16,938
Corporate-owned Stores [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Goodwill, Net carrying Amount	67,377	67,377
Equipment [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Goodwill, Net carrying Amount	$ 92,666	$ 92,666

Corporate-owned and Franchise55

Corporate-owned and Franchisee-owned Stores - Schedule of Changes in Corporate-owned and Franchisee-owned Stores (Detail) - Store		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Franchisor Disclosure [Line Items]
Stores operated at beginning of period		1,206	1,014	1,124	918
New stores opened		37	26	121	125
Stores debranded or consolidated	[1]	(1)		(3)	(3)
Stores operated at end of period		1,242	1,040	1,242	1,040
Franchisee-Owned Stores [Member]
Franchisor Disclosure [Line Items]
Stores operated at beginning of period		1,148	956	1,066	863
New stores opened		37	26	121	122
Stores debranded or consolidated	[1]	(1)		(3)	(3)
Stores operated at end of period		1,184	982	1,184	982
Corporate-Owned Stores [Member]
Franchisor Disclosure [Line Items]
Stores operated at beginning of period		58	58	58	55
New stores opened					3
Stores operated at end of period		58	58	58	58
[1]	The term “debrand” refers to a franchisee-owned store whose right to use the Planet Fitness brand and marks has been terminated in accordance with the franchise agreement. We retain the right to prevent debranded stores from continuing to operate as fitness centers. The term “consolidated” refers to the combination of a franchisee’s store with another store located in close proximity, with our prior approval. This often coincides with an enlargement, re-equipment and/or refurbishment of the remaining store.