Basis of Presentation Basis of Presentation (Details) - club	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Basis Of Presentation [Line Items]
Number of fitness clubs	154	154
Clubs converted to new pricing strategy		123
BFX Studio [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	3	3
New York Sports Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	106	106
Boston Sports Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	27	27
Washington Sports Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	13	13
Partly Owned Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	2	2
Philadelphia Sports Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	5	5
Switzerland Clubs [Member]
Basis Of Presentation [Line Items]
Number of fitness clubs	3	3
Regular Member [Member]
Basis Of Presentation [Line Items]
Average member life	22 months	22 months	22 months