Reportable Segments (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) club	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) club	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items]
Total Revenues	$ 100,839	$ 103,764	$ 108,296	$ 111,424	$ 109,721	$ 112,521	$ 115,697	$ 115,903	$ 424,323	$ 453,842	$ 470,225
EBITDA									$ 75,273	49,968	91,406
Number of fitness clubs opened | club	152								152
Depreciation and amortization									$ 47,887	47,307	49,099
Interest expense									20,579	19,039	22,617
Interest income									0	0	(1)
Income (loss) before (benefit) provision for corporate income taxes									6,807	(16,378)	19,691
Capital expenditures									30,471	42,054	30,861
Clubs [Member]
Segment Reporting Information [Line Items]
Total Revenues									422,090	453,516	470,225
EBITDA									79,232	53,524	91,770
Capital expenditures									23,427	37,101	30,565
BFX Studio [Member]
Segment Reporting Information [Line Items]
Total Revenues									2,233	326	0
EBITDA									(3,959)	(3,556)	(364)
Capital expenditures									$ 7,044	$ 4,953	$ 296
BFX Studio [Member]
Segment Reporting Information [Line Items]
Number of fitness clubs opened | club	3								3