Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 1,129	$ (2,935)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	9,128	10,309
Amortization of debt discount	240	231
Amortization of debt issuance costs	150	150
Non-cash rental income, net of non-cash rental expense	(856)	(624)
Share-based compensation expense	926	676
Net change in deferred taxes	38	0
Net change in certain operating assets and liabilities	21,200	8,953
Decrease in deferred membership costs	(1,758)	(42)
Landlord contributions to tenant improvements	300	988
Decrease in insurance reserves	(160)	(109)
Other	(47)	179
Total adjustments	29,161	20,711
Net cash provided by operating activities	30,290	17,776
Cash flows from investing activities:
Capital expenditures	(1,599)	(3,029)
Acquisition of asset	(3,989)	0
Other	(21)	0
Net cash used in investing activities	(5,609)	(3,029)
Cash flows from financing activities:
Principal payments on 2013 Term Loan Facility	(521)	(520)
Principal payments on capital lease obligations	(85)	0
Cash dividends paid	(1)	(8)
Proceeds from stock option exercises	0	46
Net cash used in financing activities	(607)	(482)
Effect of exchange rate changes on cash	33	11
Net increase in cash and cash equivalents	24,107	14,276
Cash and cash equivalents beginning of period	30,321	45,596
Cash and cash equivalents end of period	54,428	59,872
Summary of the change in certain operating assets and liabilities:
(Increase) decrease in accounts receivable	(289)	280
Increase in inventory	0	(86)
Decrease in prepaid expenses and other current assets	10,055	1,624
Increase in accounts payable, accrued expenses and accrued interest	5,610	2,943
Change in prepaid corporate income taxes and corporate income taxes payable	18	(213)
Increase in deferred revenue	5,806	4,405
Net change in certain working capital components	21,200	8,953
Supplemental disclosures of cash flow information:
Cash payments for interest, net of capitalized interest	2,836	2,760
Cash payments for income taxes	$ 21	$ 14