Fixed Asset Impairment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) club	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) club	Jun. 30, 2014 USD ($) club
Asset Impairment Charges [Line Items]
Number of clubs evaluated for impairments	11
Impairment of fixed assets | $	$ 1,014	$ 890	$ 2,151	$ 4,513
Number of locations with impairments	4		9	8
Number of locations evaluated without impairments	7
Net book value remaining for locations evaluated | $	$ 2,067		$ 2,067
Minimum [Member]
Asset Impairment Charges [Line Items]
Fair value inputs, percent of revenue			3.00%
Maximum [Member]
Asset Impairment Charges [Line Items]
Fair value inputs, percent of revenue			5.00%