Basis of Presentation	6 Months Ended
Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation As of June 30, 2017, Town Sports International Holdings, Inc. (the “Company” or “TSI Holdings”), through its wholly-owned subsidiary, Town Sports International, LLC (“TSI, LLC”), operated 149 fitness clubs (“clubs”). The clubs are composed of 102 clubs in the New York metropolitan market under the “New York Sports Clubs” brand name, 28 clubs in the Boston market under the “Boston Sports Clubs” brand name, 11 clubs (one of which is partly-owned) in the Washington, D.C. market under the “Washington Sports Clubs” brand name, five clubs in the Philadelphia market under the “Philadelphia Sports Clubs” brand name and three clubs in Switzerland. We also have one partly-owned club that operated under a different brand name in Washington, D.C. as of June 30, 2017. The Company’s operating segments are New York Sports Clubs, Boston Sports Clubs, Philadelphia Sports Clubs, Washington Sports Clubs and the clubs the Company owned in Switzerland, which is the level at which the chief operating decision makers review discrete financial information and make decisions about segment profitability based on earnings before income tax depreciation and amortization. The Company has determined that these operating segments have similar economic characteristics and meet the criteria which permit them to be aggregated into one reportable segment. The condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2016 consolidated financial statements and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. The year-end condensed consolidated balance sheet data included within this Form 10-Q was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“US GAAP”). Certain information and footnote disclosures that are normally included in financial statements prepared in accordance with US GAAP have been condensed or omitted pursuant to SEC rules and regulations. The information reflects all normal and recurring adjustments which, in the opinion of management, are necessary for a fair statement of the financial position and results of operations for the interim periods set forth herein. The results for the three and six months ended June 30, 2017 are not necessarily indicative of the results for the entire year ending December 31, 2017. The Company experienced declining revenue from members in the past several years as the fitness industry was highly competitive in the geographic regions in which the Company competed. Also, the prior strategy of converting to a low-cost gym resulted in additional revenue pressure for the past few years. New members joined at lower monthly rates and cancellations of members paying higher rates negatively impacted the Company's results and liquidity. In response to this, the Company implemented cost-savings initiatives in 2015, 2016 and 2017, which mitigated the impact the decline in revenue had on its profitability and cash flow from operations. The Company continues to recover from its prior strategy of converting to a low-cost gym. The Company focuses on increasing membership in existing clubs to increase revenue. The Company may consider additional actions within its control, including club acquisitions, the closure of unprofitable clubs upon lease expiration, the sale of certain assets and entering into arrangements with revenue generating partnerships, some of which will utilize a “shop-in-shop” concept. The Company may also consider additional strategic alternatives, including opportunities to reduce TSI, LLC’s existing debt and further cost-savings initiatives. The Company’s ability to continue to meet its obligations is dependent on its ability to generate positive cash flow from a combination of initiatives, including those mentioned above. Failure to successfully implement these initiatives could have a material adverse effect on the Company’s liquidity and its operations, and the Company would need to implement alternative plans that could include additional asset sales, additional reductions in operating costs, additional reductions in working capital, debt restructurings and the deferral of capital expenditures. There can be no assurance that such alternatives would be available to the Company or that the Company would be successful in their implementation. Change in Estimated Average Membership Life The average membership life was 26 months for the three and six months ended June 30, 2017 and 25 months for the full year of 2016. The Company monitors factors that might affect the estimated average membership life including retention trends, attrition trends, membership sales volumes, membership composition, competition, and general economic conditions, and adjusts the estimate as necessary on an annual basis. Joining fees, as well as related direct and incremental expenses of membership acquisition, which may include sales commissions, bonuses and related taxes and benefits, are deferred and recognized, on a straight-line basis, in operations over the estimated average membership life or 12 months to the extent these costs are related to the first annual fee paid at the time of enrollment. Annual fees are amortized over 12 months.

Basis of Presentation

As of June 30, 2017, Town Sports International Holdings, Inc. (the “Company” or “TSI Holdings”), through its wholly-owned subsidiary, Town Sports International, LLC (“TSI, LLC”), operated 149 fitness clubs (“clubs”). The clubs are composed of 102 clubs in the New York metropolitan market under the “New York Sports Clubs” brand name, 28 clubs in the Boston market under the “Boston Sports Clubs” brand name, 11 clubs (one of which is partly-owned) in the Washington, D.C. market under the “Washington Sports Clubs” brand name, five clubs in the Philadelphia market under the “Philadelphia Sports Clubs” brand name and three clubs in Switzerland. We also have one partly-owned club that operated under a different brand name in Washington, D.C. as of June 30, 2017. The Company’s operating segments are New York Sports Clubs, Boston Sports Clubs, Philadelphia Sports Clubs, Washington Sports Clubs and the clubs the Company owned in Switzerland, which is the level at which the chief operating decision makers review discrete financial information and make decisions about segment profitability based on earnings before income tax depreciation and amortization. The Company has determined that these operating segments have similar economic characteristics and meet the criteria which permit them to be aggregated into one reportable segment.

The condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2016 consolidated financial statements and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. The year-end condensed consolidated balance sheet data included within this Form 10-Q was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“US GAAP”). Certain information and footnote disclosures that are normally included in financial statements prepared in accordance with US GAAP have been condensed or omitted pursuant to SEC rules and regulations. The information reflects all normal and recurring adjustments which, in the opinion of management, are necessary for a fair statement of the financial position and results of operations for the interim periods set forth herein. The results for the three and six months ended June 30, 2017 are not necessarily indicative of the results for the entire year ending December 31, 2017.

The Company experienced declining revenue from members in the past several years as the fitness industry was highly competitive in the geographic regions in which the Company competed. Also, the prior strategy of converting to a low-cost gym resulted in additional revenue pressure for the past few years. New members joined at lower monthly rates and cancellations of members paying higher rates negatively impacted the Company's results and liquidity. In response to this, the Company implemented cost-savings initiatives in 2015, 2016 and 2017, which mitigated the impact the decline in revenue had on its profitability and cash flow from operations.

The Company continues to recover from its prior strategy of converting to a low-cost gym. The Company focuses on increasing membership in existing clubs to increase revenue. The Company may consider additional actions within its control, including club acquisitions, the closure of unprofitable clubs upon lease expiration, the sale of certain assets and entering into arrangements with revenue generating partnerships, some of which will utilize a “shop-in-shop” concept. The Company may also consider additional strategic alternatives, including opportunities to reduce TSI, LLC’s existing debt and further cost-savings initiatives. The Company’s ability to continue to meet its obligations is dependent on its ability to generate positive cash flow from a combination of initiatives, including those mentioned above. Failure to successfully implement these initiatives could have a material adverse effect on the Company’s liquidity and its operations, and the Company would need to implement alternative plans that could include additional asset sales, additional reductions in operating costs, additional reductions in working capital, debt restructurings and the deferral of capital expenditures. There can be no assurance that such alternatives would be available to the Company or that the Company would be successful in their implementation.

Change in Estimated Average Membership Life

The average membership life was 26 months for the three and six months ended June 30, 2017 and 25 months for the full year of 2016. The Company monitors factors that might affect the estimated average membership life including retention trends, attrition trends, membership sales volumes, membership composition, competition, and general economic conditions, and adjusts the estimate as necessary on an annual basis.

Joining fees, as well as related direct and incremental expenses of membership acquisition, which may include sales commissions, bonuses and related taxes and benefits, are deferred and recognized, on a straight-line basis, in operations over the estimated average membership life or 12 months to the extent these costs are related to the first annual fee paid at the time of enrollment. Annual fees are amortized over 12 months.