Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income	$ 9,267	$ 1,123
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,279	26,187
Loss on extinguishment of debt		4,865
Call premium on redemption of Senior Discount Notes		(2,538)
Amortization of debt discount	192	52
Amortization of debt issuance costs	575	553
Non-cash rental expense, net of non-cash rental income	(2,377)	(2,082)
Share-based compensation expense	570	658
Decrease in deferred tax asset	4,915	1,020
Net change in certain operating assets and liabilities	(2,295)	8,132
Increase in deferred membership costs	(1,027)	(2,237)
Landlord contributions to tenant improvements	995	149
Decrease in insurance reserves	(1,332)	(984)
Other	266	184
Total adjustments	25,761	33,959
Net cash provided by operating activities	35,028	35,082
Cash flows from investing activities:
Capital expenditures	(7,087)	(11,719)
Net cash used in investing activities	(7,087)	(11,719)
Cash flows from financing activities:
Principal payment on 2011 Term Loan Facility	(21,007)	(750)
Proceeds from exercise of stock options	2,011	225
Tax benefit from stock option exercises		56
Proceeds from 2011 Senior Credit Facility, net of original issue discount		297,000
Debt issuance costs		(8,065)
Repayment of 2007 Term Loan Facility		(178,063)
Repayment of Senior Discount Notes		(138,450)
Net cash used in financing activities	(18,996)	(28,047)
Effect of exchange rate changes on cash	(21)	393
Net increase (decrease) in cash and cash equivalents	8,924	(4,291)
Cash and cash equivalents beginning of period	47,880	38,803
Cash and cash equivalents end of period	56,804	34,512
Summary of the change in certain operating assets and liabilities:
Increase in accounts receivable	(1,823)	(1,188)
Decrease (increase) in inventory	27	(50)
(Increase) decrease in prepaid expenses and other current assets	(1,007)	3,226
Decrease in accounts payable, accrued expenses and accrued interest	(5,177)	(3,337)
Change in prepaid corporate income taxes	829	558
Increase in deferred revenue	4,856	8,923
Net change in certain operating assets and liabilities	(2,295)	8,132
Supplemental disclosures of cash flow information:
Cash payments for interest	11,215	17,728
Cash payments for income taxes	$ 193	$ 525