Basis of Presentation	12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Town Sports International Holdings, Inc. (the “Company” or “TSI Holdings”) is a diversified holding company owning subsidiaries engaged in a number of business and investment activities. References to “TSI, LLC” refer to Town Sports International, LLC, and references to “TSI Group” refer to Town Sports Group, LLC, both of which are wholly-owned operating subsidiaries of the Company. As of December 31, 2017, the Company owned and operated 165 fitness clubs. The clubs are comprised of 119 clubs in the New York metropolitan region (102 of which were under the “New York Sports Clubs” brand name, 16 of which were under the “Lucille Roberts” brand name, and one of which was under the “TMPL” brand name), including 39 locations in Manhattan. Additionally, the Company owned and operated 28 clubs in the Boston metropolitan region under the “Boston Sports Clubs” brand name, 10 clubs (one of which is partly-owned) in the Washington, D.C. metropolitan region under the “Washington Sports Clubs” brand name, five clubs in the Philadelphia metropolitan region under the “Philadelphia Sports Clubs” brand name and three clubs in Switzerland. In addition, as of December 31, 2017, the Company has one partly-owned club that operates under a different brand name in Washington, D.C. The Company’s operating segments are classified by geographical regions, which include the New York, Boston, Philadelphia, Washington, D.C. and Switzerland regions. These operating segments are 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 Company continues to experience revenue pressure from members as the fitness industry continues to be highly competitive in the geographic regions in which the Company competes. Also, the prior strategy of converting to a low-cost gym implemented in 2014 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 strategize on improving its financial results. The Company focuses on increasing membership in existing clubs to increase revenue. The Company may consider additional actions within its control, including certain acquisitions, license arrangements, the closure of unprofitable clubs upon lease expiration and the sale of certain assets. 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 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.

Basis of Presentation

Town Sports International Holdings, Inc. (the “Company” or “TSI Holdings”) is a diversified holding company owning subsidiaries engaged in a number of business and investment activities. References to “TSI, LLC” refer to Town Sports International, LLC, and references to “TSI Group” refer to Town Sports Group, LLC, both of which are wholly-owned operating subsidiaries of the Company. As of December 31, 2017, the Company owned and operated 165 fitness clubs. The clubs are comprised of 119 clubs in the New York metropolitan region (102 of which were under the “New York Sports Clubs” brand name, 16 of which were under the “Lucille Roberts” brand name, and one of which was under the “TMPL” brand name), including 39 locations in Manhattan. Additionally, the Company owned and operated 28 clubs in the Boston metropolitan region under the “Boston Sports Clubs” brand name, 10 clubs (one of which is partly-owned) in the Washington, D.C. metropolitan region under the “Washington Sports Clubs” brand name, five clubs in the Philadelphia metropolitan region under the “Philadelphia Sports Clubs” brand name and three clubs in Switzerland. In addition, as of December 31, 2017, the Company has one partly-owned club that operates under a different brand name in Washington, D.C. The Company’s operating segments are classified by geographical regions, which include the New York, Boston, Philadelphia, Washington, D.C. and Switzerland regions. These operating segments are 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 Company continues to experience revenue pressure from members as the fitness industry continues to be highly competitive in the geographic regions in which the Company competes. Also, the prior strategy of converting to a low-cost gym implemented in 2014 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 strategize on improving its financial results. The Company focuses on increasing membership in existing clubs to increase revenue. The Company may consider additional actions within its control, including certain acquisitions, license arrangements, the closure of unprofitable clubs upon lease expiration and the sale of certain assets. 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 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.