Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ 8,043,000	$ 21,158,000	$ (68,989,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	43,727,000	47,887,000	47,307,000
Impairment of fixed assets	742,000	14,571,000	4,569,000
Impairment of goodwill	0	31,558,000	137,000
Gain on sale of building	0	(77,146,000)	0
(Gain) loss on extinguishment of debt	(37,893,000)	(17,911,000)	493,000
Amortization of debt discount	1,006,000	1,288,000	1,304,000
Amortization of debt issuance costs	644,000	778,000	627,000
Amortization of building financing costs	0	124,000	31,000
Noncash rental income, net of non-cash rental expense	(3,617,000)	(3,647,000)	(5,399,000)
Share-based compensation expense	1,807,000	1,386,000	1,911,000
Net change in deferred taxes	0	(11,519,000)	40,129,000
Net change in certain operating assets and liabilities	1,500,000	9,185,000	(20,994,000)
Decrease in membership costs	1,937,000	4,367,000	1,329,000
Landlord contributions to tenant improvements	2,080,000	1,288,000	1,684,000
Increase in insurance reserves	1,130,000	1,087,000	482,000
Other	84,000	416,000	137,000
Total adjustments	13,147,000	3,712,000	73,747,000
Net cash provided by operating activities	21,190,000	24,870,000	4,758,000
Cash flows from investing activities:
Capital expenditures	(19,723,000)	(30,471,000)	(42,054,000)
Change in restricted cash	0	(1,100,000)	0
Other	(280,000)	0	0
Net cash used in investing activities	(20,003,000)	(31,571,000)	(42,054,000)
Cash flows from financing activities:
Proceeds from building financing arrangement	0	4,000,000	83,400,000
Building financing arrangement costs	0	0	(3,160,000)
Principal payments on 2013 Term Loan Facility	(2,266,000)	(3,038,000)	(16,716,000)
Repurchase of 2013 Term Loan Facility	(29,765,000)	(10,947,000)	0
Debt issuance costs	0	(350,000)	0
Cash dividends paid	(50,000)	(213,000)	(7,877,000)
Redemption paid pursuant to the Rights Plan	0	(246,000)	0
Proceeds from stock option exercises	318,000	283,000	133,000
Tax benefit from restricted stock vesting	0	0	1,723,000
Net cash (used in) provided by financing activities	(31,763,000)	(10,511,000)	57,503,000
Effect of exchange rate changes on cash	(45,000)	(23,000)	(353,000)
Net (decrease) increase in cash and cash equivalents	(30,621,000)	(17,235,000)	19,854,000
Cash and cash equivalents beginning of period	76,217,000	93,452,000	73,598,000
Cash and cash equivalents end of period	45,596,000	76,217,000	93,452,000
Summary of the change in certain operating assets and liabilities:
Decrease in accounts receivable	763,000	1,446,000	25,000
Decrease (increase) in inventory	99,000	219,000	(101,000)
Decrease (increase) in prepaid expenses and other current assets	2,997,000	596,000	(1,549,000)
(Decrease) Increase in accounts payable, accrued expenses and accrued interest	(2,298,000)	1,011,000	(9,856,000)
Change in prepaid corporate income taxes and corporate income taxes payable	5,471,000	4,774,000	(12,773,000)
(Decrease) increase in deferred revenue	(5,532,000)	1,139,000	3,260,000
Net change in certain working capital components	$ 1,500,000	$ 9,185,000	$ (20,994,000)