Life Time Fitness 10-Q 25 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2013	Oct. 18, 2013
Nonprinting Document and Entity Information [Abstract]
Entity Registrant Name	Life Time Fitness, Inc.
Entity Central Index Key	1076195
Trading Symbol	LTM
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	30-Sep-13
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		42,639,353

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
CURRENT ASSETS:
Cash and cash equivalents	$19,719	$16,499
Accounts receivable, net	9,834	9,272
Center operating supplies and inventories	30,691	27,240
Prepaid expenses and other current assets	25,545	26,826
Deferred membership origination costs	10,747	11,664
Deferred income taxes	4,037	8,813
Total current assets	100,573	100,314
PROPERTY AND EQUIPMENT, net	2,024,070	1,858,666
RESTRICTED CASH	734	2,087
DEFERRED MEMBERSHIP ORIGINATION COSTS	6,019	6,820
Goodwill	49,256	37,176
OTHER ASSETS	73,138	67,111
TOTAL ASSETS	2,253,790	2,072,174
CURRENT LIABILITIES:
Current maturities of long-term debt	14,469	12,603
Accounts payable	28,890	32,140
Construction accounts payable	51,820	25,208
Accrued expenses	66,528	63,333
Deferred revenue	33,362	34,753
Total current liabilities	195,069	168,037
LONG-TERM DEBT, net of current portion	774,323	691,867
DEFERRED RENT LIABILITY	24,858	22,490
DEFERRED INCOME TAXES	91,232	95,509
DEFERRED REVENUE	6,057	6,840
OTHER LIABILITIES	21,216	14,514
Total liabilities	1,112,755	999,257
COMMITMENTS AND CONTINGENCIES (Note 6)
SHAREHOLDERS' EQUITY:
Undesignated preferred stock, 10,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $.02 par value, 75,000,000 shares authorized; 42,654,601 and 43,149,434 shares issued and outstanding, respectively	854	864
Additional paid-in capital	420,557	447,912
Retained earnings	724,616	628,942
Accumulated other comprehensive loss	-4,992	-4,801
Total shareholders' equity	1,141,035	1,072,917
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$2,253,790	$2,072,174

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets Parenthetical (USD $)	Sep. 30, 2013	Dec. 31, 2012
SHAREHOLDERS' EQUITY:
Undesignated preferred stock, shares authorized (shares)	10,000,000	10,000,000
Undesignated preferred stock issued (shares)	0	0
Undesignated preferred stock outstanding (shares)	0	0
Common stock, par value (usd per share)	$0.02	$0.02
Common stock, shares authorized (shares)	75,000,000	75,000,000
Common Stock, Shares, Issued (shares)	42,654,601	43,149,434
Common Stock, Shares, Outstanding (shares)	42,654,601	43,149,434

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUE:
Membership dues	$195,657	$187,568	$576,847	$547,933
Enrollment fees	3,598	3,859	10,567	11,742
In-center revenue	97,234	90,543	286,480	265,277
Total center revenue	296,489	281,970	873,894	824,952
Other revenue	19,522	12,903	40,972	26,672
Total revenue	316,011	294,873	914,866	851,624
OPERATING EXPENSES:
Center operations	180,431	169,521	527,191	496,790
Advertising and marketing	9,758	8,826	30,346	28,871
General and administrative	14,531	13,631	45,600	41,190
Other operating	18,479	14,091	46,538	35,243
Depreciation and amortization	29,956	29,396	89,235	85,217
Total operating expenses	253,155	235,465	738,910	687,311
Income from operations	62,856	59,408	175,956	164,313
OTHER INCOME (EXPENSE):
Interest expense, net of interest income	-6,436	-6,510	-18,999	-19,332
Equity in earnings of affiliate	379	375	1,103	1,143
Total other income (expense)	-6,057	-6,135	-17,896	-18,189
INCOME BEFORE INCOME TAXES	56,799	53,273	158,060	146,124
PROVISION FOR INCOME TAXES	22,413	21,129	62,386	58,016
NET INCOME	$34,386	$32,144	$95,674	$88,108
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$0.83	$0.77	$2.31	$2.13
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$0.83	$0.77	$2.30	$2.10
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - BASIC (in shares)	41,307	41,484	41,353	41,370
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - DILUTED (in shares)	41,613	41,881	41,606	41,885

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
NET INCOME	$34,386	$32,144	$95,674	$88,108
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments, net of taxes of $(251), $81, $872 and $69, respectively	349	-108	-1,357	-72
Unrealized gains (losses) on cash flow hedges, net of taxes of $147, $434, $(778) and $1,416, respectively	-221	-650	1,167	-2,125
Other comprehensive income (loss), net of tax:	128	-758	-190	-2,197
COMPREHENSIVE INCOME	$34,514	$31,386	$95,484	$85,911

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax	($251)	$81	$872	$69
Unrealized gains (losses) on cash flow hedges, tax	$147	$434	($778)	$1,416

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$95,674	$88,108
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	89,235	85,217
Deferred income taxes	-583	-4,387
(Gain) loss on disposal of property and equipment, net	-100	1,231
Gain on land held for sale	0	-196
Amortization of deferred financing costs	1,635	1,504
Share-based compensation	9,410	10,862
Excess tax benefit related to share-based compensation	-6,575	-9,138
Changes in operating assets and liabilities	2,726	30,429
Other	-659	-769
Net cash provided by operating activities	190,763	202,861
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	-224,542	-164,556
Acquisitions, net of cash acquired	-13,102	-28,984
Proceeds from sale of property and equipment	1,116	673
Proceeds from sale of land held for sale	0	1,758
Proceeds from property insurance settlements	177	901
Increase in other assets	-1,022	-94
Decrease in restricted cash	1,353	376
Net cash used in investing activities	-236,020	-189,926
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term borrowings	125,000	0
Repayments of long-term borrowings	-31,773	-5,094
Repayments of revolving credit facility, net	-7,150	-16,000
Increase in deferred financing costs	-4,213	-306
Excess tax benefit related to share-based compensation	6,575	9,138
Proceeds from stock option exercises	1,563	2,088
Proceeds from employee stock purchase plan	1,074	999
Stock purchased for employee stock purchase plan	-1,309	-1,290
Repurchases of common stock	-40,272	0
Net cash provided by (used in) financing activities	49,495	-10,465
Effect of exchange rates on cash and cash equivalents	-1,018	-1,332
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	3,220	1,138
CASH AND CASH EQUIVALENTS - Beginning of period	16,499	7,487
CASH AND CASH EQUIVALENTS - End of period	$19,719	$8,625

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary to fairly present financial position, results of operations and cash flows for the periods have been included.
	These interim consolidated financial statements and the related notes should be read in conjunction with the annual consolidated financial statements and notes included in the latest Form 10-K, as filed with the Securities and Exchange Commission (“SEC”), which includes audited consolidated financial statements for the three fiscal years ended December 31, 2012.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2013
Share-based Compensation [Abstract]
Share-Based Compensation	Share-Based Compensation
	Stock Option and Incentive Plans
	We have four share-based compensation plans: the Life Time Fitness, Inc. 1998 Stock Option Plan (the “1998 Plan”); the Amended and Restated Life Time Fitness, Inc. 2004 Long-Term Incentive Plan (the “2004 Plan”); the Life Time Fitness, Inc. 2011 Long-Term Incentive Plan (the “2011 Plan”) and an Employee Stock Purchase Plan (the “ESPP”), collectively, the share-based compensation plans. We no longer make grants under the 1998 Plan and the 2004 Plan. There are 2,500,000 shares of common stock reserved for grant under the 2011 Plan and, as of September 30, 2013, there were 1,149,485 shares available for grant. The types of awards that may be granted under the 2011 Plan include incentive and non-qualified options to purchase shares of common stock, stock appreciation rights, restricted shares, restricted share units, performance awards and other types of share-based awards.
	As of September 30, 2013, we had granted a total of 5,587,165 options to purchase common stock under all of the share-based compensation plans, of which options to purchase 221,668 shares were outstanding and vested, and a total of 4,740,571 restricted shares were granted, of which 1,517,185 restricted shares were outstanding and unvested. We use the term “restricted shares” to define unvested shares granted to employees and non-employee directors. We use the term "vest" to define the lapse of vesting restrictions on restricted shares.
	Total share-based compensation expense included in our consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012, was as follows:
		For the Three Months Ended						For the Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Share-based compensation expense related to restricted shares	$	3,094		$	3,520		$	9,320	$	10,772
	Share-based compensation expense related to ESPP	30			30			90		90
	Total share-based compensation expense	$	3,124		$	3,550		$	9,410	$	10,862
	Summary of Restricted Stock Activity
		Shares		Weighted Average Grant Date Fair Value
	Outstanding at December 31, 2012	2,069,168		$36.55
	Granted	328,550		$41.94
	Canceled	(10,995	)	$34.63
	Vested	(817,688	)	$24.55
	Outstanding at March 31, 2013	1,569,035		$43.95
	Granted	25,406		$47.58
	Canceled	(39,476	)	$43.40
	Vested	(31,809	)	$39.54
	Outstanding at June 30, 2013	1,523,156		$44.11
	Granted	9,150		$48.77
	Canceled	(6,375	)	$42.70
	Vested	(8,746	)	$41.99
	Outstanding at September 30, 2013	1,517,185		$44.16
	During the nine months ended September 30, 2013 and 2012, we issued 363,106 and 1,039,526 shares of restricted stock, respectively, with an aggregate grant date fair value of $15.4 million and $49.2 million, respectively. The grant date fair value of restricted shares that vested during the nine months ended September 30, 2013 and 2012 was $21.7 million and $19.1 million, respectively. The total value of each restricted stock grant, based on the fair value of the stock on the date of grant, is amortized to compensation expense on a straight-line basis over the related vesting period. As of September 30, 2013, there was $29.4 million of unrecognized compensation expense related to restricted stock that is expected to vest. We plan to recognize this amount over a weighted average period of 2.4 years.
	Special 2012 Long-Term Performance-Based Restricted Stock Grant
	In May 2012, the Compensation Committee of our Board of Directors approved the grant of 598,000 shares of long-term performance-based restricted stock to serve as an incentive to our senior management team to achieve certain cumulative diluted earnings per share ("EPS") and return on invested capital (“ROIC”) targets during performance periods that end on December 31, 2015 and December 31, 2016. In July and August 2012, an additional 40,500 and 20,000 shares, respectively, of long-term performance-based restricted stock were granted to members of management using the same cumulative diluted EPS and ROIC targets and vesting schedule. These shares are included in the overall number of restricted shares granted in 2012.
	The cumulative diluted EPS target measures cumulative diluted EPS for each quarter during the period from April 1, 2012 to the end of the applicable performance period. The ROIC target is measured in the last year of the applicable performance period. If the specified cumulative diluted EPS and ROIC targets are both met or exceeded for the performance period ending December 31, 2015, 50% of the restricted shares will vest. If the specified cumulative diluted EPS and ROIC targets are both met or exceeded for the performance period ending December 31, 2016, then all of the restricted shares will vest. For example, if the 2015 performance targets were satisfied and 50% of the shares vested, the remaining 50% of the restricted shares will vest if the 2016 performance targets were satisfied. If the 2015 performance targets were not satisfied, but the 2016 performance targets are both met, 100% of the restricted shares will vest. In the event that we do not achieve both of the specified cumulative diluted EPS and ROIC targets for the performance period ending December 31, 2016, the restricted shares will be forfeited. As of September 30, 2013, 651,500 shares were still outstanding and unvested. A maximum of $29.9 million of compensation expense could be recognized under this grant if all cumulative diluted EPS and ROIC targets are met.
	We consider the specific cumulative diluted EPS and ROIC targets to be competitively sensitive information during the performance period. However, the Compensation Committee set the cumulative diluted EPS targets at 1.5 times the compound annual growth rate under our then-current long range plan and the ROIC targets at 1.1 times the ROIC under our then-current long range plan. We do not believe that achievement of the cumulative diluted EPS and the ROIC targets are currently probable, and, therefore, we did not recognize any compensation expense associated with the grant during the nine months ended September 30, 2013. If all of the targets had been considered probable at September 30, 2013, we would have recognized $10.2 million of non-cash performance share-based compensation expense during the nine months ended September 30, 2013. If it becomes probable that the cumulative diluted EPS and ROIC performance targets will be achieved, a cumulative adjustment would be recorded and the remaining compensation expense would be recognized over the remaining performance period. The probability of reaching the targets is evaluated each reporting period. If we later determine that it is no longer probable that the minimum cumulative diluted EPS and ROIC performance targets for the grants would be met, no further compensation expense would be recognized and any previously recognized compensation expense would be reversed. In accordance with the related accounting guidance, none of the unvested restricted shares were included in our share count since the date of grant.
	Summary of Stock Option Activity
		Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
	Outstanding at December 31, 2012	291,510		$24.96		2	$7,073
	Exercised	(40,675	)	$21.44
	Canceled	—		$—
	Outstanding at March 31, 2013	250,835		$25.53		1.8	$4,441
	Exercised	(8,967	)	$26.33
	Canceled	(1,600	)	$8.00
	Outstanding at June 30, 2013	240,268		$25.62		1.6	$5,886
	Exercised	(18,600	)	$24.47
	Canceled	—		$—
	Outstanding at September 30, 2013	221,668		$25.72		1.3	$5,709
	Vested at September 30, 2013	221,668		$25.72		1.3	$5,709
	No stock options have been granted since 2007. As of September 30, 2013, there was no unrecognized compensation expense related to stock options.
	The aggregate intrinsic values in the table above represent the total pretax intrinsic values (the differences between our closing stock price and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on that date. This amount changes based on the fair market value of our stock. Total intrinsic value of options exercised during the nine months ended September 30, 2013 and 2012 was $1.6 million and $3.1 million, respectively.
	Our net cash proceeds from the exercise of stock options were $1.6 million and $2.1 million for the nine months ended September 30, 2013 and 2012, respectively. The excess income tax benefit realized from stock option exercises and restricted stock vesting was $6.6 million and $9.1 million, respectively, for those same periods. In accordance with the related accounting guidance, this tax benefit is presented as a financing cash inflow. There is a corresponding cash outflow included in cash flows from operating activities.
	Employee Stock Purchase Plan
	Our ESPP provides for the sale of up to 1,500,000 shares of our common stock to our employees at discounted purchase prices. The cost per share under this plan is 90% of the fair market value of our common stock on the last day of the purchase period, as defined. The current purchase period for employees under the ESPP began July 1, 2013 and ends December 31, 2013. Compensation expense under the ESPP is estimated based on the discount of 10% at the end of the purchase period. During the nine months ended September 30, 2013, $1.1 million was withheld from employees for the purpose of purchasing shares under the ESPP. There were 1,260,727 shares of common stock available for purchase under the ESPP as of September 30, 2013.
	Share Repurchase Plans
	In June 2006, our Board of Directors authorized the repurchase of up to 500,000 shares of our common stock from time to time in the open market or otherwise for the primary purpose of offsetting the dilutive effect of shares issued under our ESPP. During the nine months ended September 30, 2013, we repurchased 27,093 shares for approximately $1.3 million. As of September 30, 2013, there were 260,727 remaining shares authorized to be repurchased for this purpose.
	In August 2011, our Board of Directors authorized the repurchase of up to $60.0 million of our outstanding common stock from time to time. During the nine months ended September 30, 2013, we repurchased 682,634 shares under this program for approximately $31.0 million. This authorization terminated in August 2013 with the authorization of a new share repurchase program.
	In August 2013, our Board of Directors authorized the repurchase of up to $200.0 million of our outstanding common stock from time to time through open market or privately negotiated transactions. The authorization to repurchase shares terminates when the aggregate repurchase amount totals $200.0 million or at the close of business on August 16, 2015, whichever occurs first. The share repurchase program does not obligate us to repurchase any dollar amount or number of shares of our common stock and the program may be extended, modified, suspended or discontinued at any time. During the nine months ended September 30, 2013, we repurchased 186,701 shares under this program for approximately $9.3 million. As of September 30, 2013, there was $190.7 million remaining authorized under this program.

Earnings_per_Share

Earnings per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share
	Basic EPS is computed by dividing net income applicable to common shareholders by the weighted average number of shares of common stock outstanding for each period. Diluted EPS is computed similarly to basic EPS, except that the denominator is increased for the conversion of any dilutive common stock equivalents, the assumed exercise of dilutive stock options using the treasury stock method and unvested restricted stock awards using the treasury stock method. Stock options excluded from the calculation of diluted EPS because the option exercise price was greater than the average market price of the common share were 0 and 15,540 for the three months ended September 30, 2013 and 2012, respectively, and 2,477 for both the nine months ended September 30, 2013 and 2012.
	The basic and diluted EPS calculations are shown below:
		For the Three Months Ended				For the Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Net income	$	34,386	$	32,144	$	95,674	$	88,108
	Weighted average number of common shares outstanding – basic	41,307		41,484		41,353		41,370
	Effect of dilutive stock options	95		122		87		122
	Effect of dilutive restricted stock awards	211		275		166		393
	Weighted average number of common shares outstanding – diluted	41,613		41,881		41,606		41,885
	Basic earnings per common share	$	0.83	$	0.77	$	2.31	$	2.13
	Diluted earnings per common share	$	0.83	$	0.77	$	2.3	$	2.1

Operating_Segment

Operating Segment	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Reportable Segment
		Operating Segment
	Our operations are conducted mainly through our distinctive and large, multi-use sports and athletic, professional fitness, family recreation and spa centers in a resort-like environment. We aggregate the activities of our centers and other ancillary products and services into one reportable segment. Each of the centers has similar economic characteristics, services, product offerings and customers, and in-center revenues are derived primarily from services to our members. Each of the other ancillary products and services either directly or indirectly, through advertising or branding, complement the operations of the centers. Our chief operating decision maker, our Chief Executive Officer, uses EBITDA (net income plus interest expense, net, provision for income taxes and depreciation and amortization) as the primary measure of operating segment performance.
	The following table presents revenue for the three and nine months ended September 30, 2013 and 2012:
		For the Three Months Ended				For the Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Membership dues	$	195,657	$	187,568	$	576,847	$	547,933
	Enrollment fees	3,598		3,859		10,567		11,742
	Personal training	46,095		42,138		138,903		126,675
	Other in-center revenue	51,139		48,405		147,577		138,602
	Total center revenue	296,489		281,970		873,894		824,952
	Other revenue	19,522		12,903		40,972		26,672
	Total revenue	$	316,011	$	294,873	$	914,866	$	851,624

Supplementary_Cash_Flow_Inform

Supplementary Cash Flow Information	9 Months Ended
	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]
Supplementary Cash Flow Information	Supplemental Cash Flow Information
	Decreases (increases) in operating assets and increases (decreases) in operating liabilities are as follows:
		For the Nine Months Ended
		September 30,
		2013			2012
	Accounts receivable, net	$	(657	)	$	(2,566	)
	Income tax receivable	—			5,022
	Center operating supplies and inventories	(3,458		)	(5,008		)
	Prepaid expenses and other current assets	4,180			(443		)
	Deferred membership origination costs	1,718			340
	Accounts payable	(3,585		)	4,036
	Accrued expenses	8,604			25,618
	Deferred revenue	(6,762		)	547
	Deferred rent liability	2,384			2,382
	Other liabilities	302			501
	Changes in operating assets and liabilities	$	2,726		$	30,429
	We made cash payments for income taxes of $54.3 million and $45.0 million for the nine months ended September 30, 2013 and 2012, respectively.
	We made cash payments for interest, net of capitalized interest, of $16.9 million and $17.8 million for the nine months ended September 30, 2013 and 2012, respectively. Capitalized interest was $2.0 million and $0.7 million for the same periods.
	Construction accounts payable was $51.8 million and $17.2 million at September 30, 2013 and 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Litigation — We are engaged in proceedings incidental to the normal course of business. Due to their nature, such legal proceedings involve inherent uncertainties, including but not limited to court rulings, negotiations between affected parties and governmental intervention. We have established reserves for matters that are probable and estimable in amounts we believe are adequate to cover reasonable adverse judgments not covered by insurance. These reserves are not material to our consolidated financial statements. Based upon the information available to us and discussions with legal counsel, it is our opinion that the outcome of the various legal actions and claims that are incidental to our business will not have a material adverse impact on our consolidated financial position, results of operations or cash flows. Such matters are subject to many uncertainties, and the outcome of individual matters are not predictable with assurance.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
New Accounting Pronouncement or Change in Accounting Principle, Current Period Disclosures [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In July 2012, the Financial Accounting Standards Board ("FASB") updated guidance on intangible asset impairment testing. The guidance became effective for us in 2013. The amendments in this update allow companies to first assess qualitative factors to determine whether it is necessary to perform a quantitative impairment test. Under the update, a company will not be required to calculate the fair value of an indefinite-lived intangible asset unless the company determines, based on qualitative assessment, that it is not more likely than not, the indefinite-lived intangible asset is impaired. The amendments include a number of events and circumstances for an entity to consider in conducting the qualitative assessment. The implementation of the guidance did not have a material impact on our consolidated financial statements.
	In February 2013, the FASB issued guidance adding new disclosure requirements for items reclassified out of accumulated other comprehensive income ("AOCI"), which became effective for us in 2013. The guidance is intended to help entities improve the transparency of changes in other comprehensive income ("OCI") and items reclassified out of AOCI in financial statements. It does not amend any existing requirements for reporting net income or OCI in financial statements. The implementation of the guidance did not have an impact on our consolidated financial statements.

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments
	As part of our financial risk management program, we may periodically use interest rate swaps to manage known market exposures. Terms of derivative instruments are structured to match the terms of the risk being managed and are generally held to maturity.
	In August 2011, we entered into an interest rate swap contract that effectively fixed the rates paid on a total of $200.0 million of variable rate borrowings at 1.32% plus the applicable spread (which depends on our EBITDAR leverage ratio) until June 2016. EBITDAR is a non-GAAP, non-cash measure which consists of net income plus interest expense, net, provision for income taxes, depreciation and amortization and rent expense. We pay 1.32% and receive LIBOR on the notional amount of $200.0 million. The contract has been designated a cash flow hedge against interest rate volatility. In accordance with applicable accounting guidance, changes in the fair value of the swap contract are recorded in accumulated other comprehensive (loss) income, net of tax. As of September 30, 2013, the $2.5 million fair value loss, net of tax, of the swap contract was recorded as accumulated other comprehensive loss in the shareholders' equity section of our consolidated balance sheets and the $4.1 million gross fair value of the swap contract was included in long-term debt.
	On an ongoing basis, we assess whether the interest rate swap used in this hedging transaction is “highly effective” in offsetting changes in the fair value or cash flow of the hedged item by comparing the current terms of the swap and the debt to assure they continue to coincide and through an evaluation of the continued ability of the counterparty to the swap to honor its obligations under the swap. No ineffectiveness was experienced in the interest rate swap during the nine months ended September 30, 2013. The amendment of our credit facility (see Note 11) did not impact our interest rate swap or the effectiveness of the hedge. If it is determined that the derivative is not highly effective as a hedge or hedge accounting is discontinued, any change in fair value of the derivative since the last date at which it was determined to be effective would be recognized in earnings.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	The accounting guidance establishes a framework for measuring fair value and expanded disclosures about fair value measurements. The guidance applies to all assets and liabilities that are measured and reported on a fair value basis. This enables the reader of the financial statements to assess the inputs used to develop those measurements by establishing a hierarchy for ranking the quality and reliability of the information used to determine fair values. The guidance requires that each asset and liability carried at fair value be classified into one of the following categories:
	Level 1: Quoted market prices in active markets for identical assets or liabilities.
	Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.
	Level 3: Unobservable inputs that are not corroborated by market data.
	Fair Value Measurements on a Recurring Basis
	The fair value of the interest rate swap is determined using observable current market information such as the prevailing LIBOR interest rates, LIBOR yield curve rates and current fair values as quoted by recognized dealers, and also includes consideration of counterparty credit risk. The following table presents the fair value of our derivative financial instrument as of September 30, 2013 and December 31, 2012:
				Fair Value Measurements Using:
				Quoted Prices in	Significant		Significant
		Total		Active Markets for	Other Observable		Unobservable
		Fair		Identical Assets	Inputs		Inputs
		Value		(Level 1)	(Level 2)		(Level 3)
	Interest rate swap liability as of
	30-Sep-13	$4,108		$—	$4,108		$—
	Interest rate swap liability as of
	December 31, 2012	$6,052		$—	$6,052		$—
	Fair Value Measurements on a Nonrecurring Basis
	Assets and liabilities that are measured at fair value on a nonrecurring basis relate primarily to our tangible fixed assets, goodwill and other intangible assets, which are remeasured when the derived fair value is below carrying value on our consolidated balance sheets. For these assets, we do not periodically adjust carrying value to fair value except in the event of impairment. If we determine that impairment has occurred, the carrying value of the asset would be reduced to fair value and the difference would be recorded as a loss within operating income in our consolidated statements of operations.
	We had no remeasurements of such assets or liabilities to fair value during the nine months ended September 30, 2013 or September 30, 2012.
	Financial Assets and Liabilities Not Measured at Fair Value
	The carrying amounts related to cash and cash equivalents (Level 1), accounts receivable, income tax receivable, accounts payable and accrued liabilities approximate fair value due to the relatively short maturities of such instruments.
	The fair value of our long-term debt and capital leases are estimated based on estimated current rates for debt with similar terms, credit worthiness and the same remaining maturities. For variable rate loans that re-price frequently, fair values are based on carrying values. The fair value of fixed rate loans is estimated based on the discounted cash flows of the loans using current market rates, which are estimated based on recent financing transactions (Level 3). The fair value estimates presented are based on information available to us as of September 30, 2013. These fair value estimates have not been comprehensively revalued for purposes of these consolidated financial statements since that date, and current estimates of fair values may differ significantly.
	The following table presents the carrying value and the estimated fair value of long-term debt:
		September 30, 2013						December 31, 2012
		Carrying Value			Estimated Fair Value			Carrying Value		Estimated Fair Value
	Fixed-rate debt	$	490,936		$	492,192		$	396,591	$	403,659
	Obligations under capital leases	15,083			15,251			15,441		15,582
	Floating-rate debt	282,773			282,773			292,437		292,437
	Total	$	788,792		$	790,216		$	704,469	$	711,678

Changes_in_Accumulated_Other_C

Changes in Accumulated Other Comprehensive Income by Component	3 Months Ended
	Sep. 30, 2013
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income by Component	Changes in Accumulated Other Comprehensive Income by Component
	The following table presents information about accumulated other comprehensive income (loss) by component for the nine months ended September 30, 2013 (net of tax):
		Gains (Losses) on Cash Flows Hedge			Foreign Currency Translation Adjustments			Accumulated Other Comprehensive Loss
	Balance at December 31, 2012	$	(3,631	)	$	(1,170	)	$	(4,801	)
	Other comprehensive income	321			(584		)	(263		)
	Balance at March 31, 2013	(3,310		)	(1,754		)	(5,064		)
	Other comprehensive income	1,067			(1,123		)	(56		)
	Balance at June 30, 2013	(2,243		)	(2,877		)	(5,120		)
	Other comprehensive income	(221		)	349			128
	Balance at September 30, 2013	$	(2,464	)	$	(2,528	)	$	(4,992	)

LongTerm_Debt_LongTerm_Debt_No

Long-Term Debt Long-Term Debt (Notes)	3 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]
Long-term Debt	Long-Term Debt
	Effective July 31, 2013, we entered into the 2nd Amendment to the Third Amended and Restated Credit Agreement (the “Credit Agreement”) with U.S. Bank National Association, as administrative agent and lender, and other lenders from time to time a party thereto. The material amendments to the Credit Agreement were (i) an increase to the amount of the revolving credit facility from $660.0 million to $760.0 million and a new $100.0 million term loan and (ii) an extension of the term of the facility to July 31, 2018. The revolving credit facility may be increased by an additional $240.0 million upon the exercise of an accordion feature if one or more lenders commit the additional $240.0 million. The term loan dated July 31, 2013 amortizes at the rate of 5.0% of the original term loan amount on an annual basis. The facility remains floating rate with a spread over LIBOR or Prime. The spreads under the leverage-based pricing grid in the facility remain unchanged, as do the financial covenant ratio thresholds.
	On February 12, 2013, a wholly owned subsidiary obtained a mortgage loan in the original principal amount of $75.0 million from ING Life Insurance and Annuity Company pursuant to a promissory note and related agreements. The mortgage financing is secured by five properties and matures in March 2023. Interest on the amounts borrowed is 4.45% per annum, with a constant monthly debt service payment of $0.8 million.
	On August 23, 2013, a wholly owned subsidiary obtained a mortgage loan in the original principal amount of $50.0 million from ING Life Insurance and Annuity Company pursuant to a promissory note and related agreements. The mortgage financing is secured by three properties and matures in September 2026. Interest on the amounts borrowed is 4.48% per annum, with a constant monthly debt service payment of $0.4 million.

Intangible_Assets_Intangible_A

Intangible Assets Intangible Assets (Notes)	9 Months Ended
	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	The change in the carrying amount of goodwill is as follows:
	Balance at December 31, 2012	$	37,176
	Goodwill acquired	12,080
	Balance at September 30, 2013	$	49,256
	The goodwill acquired during the nine months ended September 30, 2013 is primarily related to the acquisition of certain athletic events. We are currently in the process of finalizing the valuation of the assets acquired and liabilities assumed.
	The following table summarizes the changes in our gross intangible balance during the nine months ended September 30, 2013:
	Balance at December 31, 2012	$	28,531
	Trade/brand names acquired	5,347
	Balance at September 30, 2013	$	33,878
	The trade/brand names acquired during the nine months ended September 30, 2013 are primarily related to the acquisition of certain athletic events. At September 30, 2013, intangible assets consisted of the following:
		Gross		Accumulated Amortization		Net
	Leasehold rights	$	6,392	$	1,324	$	5,068
	Trade/brand names	15,479		885		14,594
	Curriculum- and technology-based intangibles	6,595		1,146		5,449
	Customer relationships	5,412		812		4,600
	Total intangible assets	$	33,878	$	4,167	$	29,711
	Of the trade/brand names acquired during the nine months ended September 30, 2013, approximately $5.1 million have indefinite useful lives. The remaining $0.2 million of the acquired trade/brand names have a useful life of 10 years. Amortization expense for intangible assets was $1.5 million and $1.0 million for the nine months ended September 30, 2013 and 2012, respectively.

Sharebased_Compensation_Polici

Share-based Compensation (Policies)	9 Months Ended
	Sep. 30, 2013
Share-based Compensation [Abstract]
Stock Option and Incentive Plans	The types of awards that may be granted under the 2011 Plan include incentive and non-qualified options to purchase shares of common stock, stock appreciation rights, restricted shares, restricted share units, performance awards and other types of share-based awards.
	We use the term “restricted shares” to define unvested shares granted to employees and non-employee directors. We use the term "vest" to define the lapse of vesting restrictions on restricted shares.
	If it becomes probable that the cumulative diluted EPS and ROIC performance targets will be achieved, a cumulative adjustment would be recorded and the remaining compensation expense would be recognized over the remaining performance period. The probability of reaching the targets is evaluated each reporting period. If we later determine that it is no longer probable that the minimum cumulative diluted EPS and ROIC performance targets for the grants would be met, no further compensation expense would be recognized and any previously recognized compensation expense would be reversed.
	The total value of each restricted stock grant, based on the fair value of the stock on the date of grant, is amortized to compensation expense on a straight-line basis over the related vesting period.

Earnings_per_Share_Earnings_pe

Earnings per Share Earnings per Share Policy (Policies)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Earnings Per Share	Basic EPS is computed by dividing net income applicable to common shareholders by the weighted average number of shares of common stock outstanding for each period. Diluted EPS is computed similarly to basic EPS, except that the denominator is increased for the conversion of any dilutive common stock equivalents, the assumed exercise of dilutive stock options using the treasury stock method and unvested restricted stock awards using the treasury stock method.

Operating_Segment_Operating_Se

Operating Segment Operating Segment (Policies)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Operating Segment	Our operations are conducted mainly through our distinctive and large, multi-use sports and athletic, professional fitness, family recreation and spa centers in a resort-like environment. We aggregate the activities of our centers and other ancillary products and services into one reportable segment. Each of the centers has similar economic characteristics, services, product offerings and customers, and in-center revenues are derived primarily from services to our members. Each of the other ancillary products and services either directly or indirectly, through advertising or branding, complement the operations of the centers. Our chief operating decision maker, our Chief Executive Officer, uses EBITDA (net income plus interest expense, net, provision for income taxes and depreciation and amortization) as the primary measure of operating segment performance.

Commitments_and_Contingencies_

Commitments and Contingencies (Policies)	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Litigation — We are engaged in proceedings incidental to the normal course of business. Due to their nature, such legal proceedings involve inherent uncertainties, including but not limited to court rulings, negotiations between affected parties and governmental intervention. We have established reserves for matters that are probable and estimable in amounts we believe are adequate to cover reasonable adverse judgments not covered by insurance.

Derivative_Instruments_Policie

Derivative Instruments (Policies)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments [Abstract]
Derivatives	As part of our financial risk management program, we may periodically use interest rate swaps to manage known market exposures. Terms of derivative instruments are structured to match the terms of the risk being managed and are generally held to maturity.
	On an ongoing basis, we assess whether the interest rate swap used in this hedging transaction is “highly effective” in offsetting changes in the fair value or cash flow of the hedged item by comparing the current terms of the swap and the debt to assure they continue to coincide and through an evaluation of the continued ability of the counterparty to the swap to honor its obligations under the swap. No ineffectiveness was experienced in the interest rate swap during the nine months ended September 30, 2013. The amendment of our credit facility (see Note 11) did not impact our interest rate swap or the effectiveness of the hedge. If it is determined that the derivative is not highly effective as a hedge or hedge accounting is discontinued, any change in fair value of the derivative since the last date at which it was determined to be effective would be recognized in earnings.
	In accordance with applicable accounting guidance, changes in the fair value of the swap contract are recorded in accumulated other comprehensive (loss) income, net of tax.

Fair_Value_Measurements_Polici

Fair Value Measurements (Policies)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	The accounting guidance establishes a framework for measuring fair value and expanded disclosures about fair value measurements. The guidance applies to all assets and liabilities that are measured and reported on a fair value basis. This enables the reader of the financial statements to assess the inputs used to develop those measurements by establishing a hierarchy for ranking the quality and reliability of the information used to determine fair values. The guidance requires that each asset and liability carried at fair value be classified into one of the following categories:
	Level 1: Quoted market prices in active markets for identical assets or liabilities.
	Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.
	Level 3: Unobservable inputs that are not corroborated by market data.
	Fair Value Measurements on a Recurring Basis
	The fair value of the interest rate swap is determined using observable current market information such as the prevailing LIBOR interest rates, LIBOR yield curve rates and current fair values as quoted by recognized dealers, and also includes consideration of counterparty credit risk. The following table presents the fair value of our derivative financial instrument as of September 30, 2013 and December 31, 2012:
			Fair Value Measurements Using:
			Quoted Prices in	Significant	Significant
		Total	Active Markets for	Other Observable	Unobservable
		Fair	Identical Assets	Inputs	Inputs
		Value	(Level 1)	(Level 2)	(Level 3)
	Interest rate swap liability as of
	30-Sep-13	$4,108	$—	$4,108	$—
	Interest rate swap liability as of
	December 31, 2012	$6,052	$—	$6,052	$—
	Fair Value Measurements on a Nonrecurring Basis
	Assets and liabilities that are measured at fair value on a nonrecurring basis relate primarily to our tangible fixed assets, goodwill and other intangible assets, which are remeasured when the derived fair value is below carrying value on our consolidated balance sheets. For these assets, we do not periodically adjust carrying value to fair value except in the event of impairment. If we determine that impairment has occurred, the carrying value of the asset would be reduced to fair value and the difference would be recorded as a loss within operating income in our consolidated statements of operations.
	We had no remeasurements of such assets or liabilities to fair value during the nine months ended September 30, 2013 or September 30, 2012.
	Financial Assets and Liabilities Not Measured at Fair Value
	The carrying amounts related to cash and cash equivalents (Level 1), accounts receivable, income tax receivable, accounts payable and accrued liabilities approximate fair value due to the relatively short maturities of such instruments.
	The fair value of our long-term debt and capital leases are estimated based on estimated current rates for debt with similar terms, credit worthiness and the same remaining maturities. For variable rate loans that re-price frequently, fair values are based on carrying values. The fair value of fixed rate loans is estimated based on the discounted cash flows of the loans using current market rates, which are estimated based on recent financing transactions (Level 3). The fair value estimates presented are based on information available to us as of September 30, 2013. These fair value estimates have not been comprehensively revalued for purposes of these consolidated financial statements since that date, and current estimates of fair values may differ significantly.

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Share-based Compensation [Abstract]
Total Share-Based Compensation Expense Included in our Consolidated Statements of Operations	Total share-based compensation expense included in our consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012, was as follows:
		For the Three Months Ended						For the Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Share-based compensation expense related to restricted shares	$	3,094		$	3,520		$	9,320	$	10,772
	Share-based compensation expense related to ESPP	30			30			90		90
	Total share-based compensation expense	$	3,124		$	3,550		$	9,410	$	10,862
Summary of Restricted Stock Activity	Summary of Restricted Stock Activity
		Shares		Weighted Average Grant Date Fair Value
	Outstanding at December 31, 2012	2,069,168		$36.55
	Granted	328,550		$41.94
	Canceled	(10,995	)	$34.63
	Vested	(817,688	)	$24.55
	Outstanding at March 31, 2013	1,569,035		$43.95
	Granted	25,406		$47.58
	Canceled	(39,476	)	$43.40
	Vested	(31,809	)	$39.54
	Outstanding at June 30, 2013	1,523,156		$44.11
	Granted	9,150		$48.77
	Canceled	(6,375	)	$42.70
	Vested	(8,746	)	$41.99
	Outstanding at September 30, 2013	1,517,185		$44.16
Summary of Stock Option Activity	Summary of Stock Option Activity
		Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
	Outstanding at December 31, 2012	291,510		$24.96		2	$7,073
	Exercised	(40,675	)	$21.44
	Canceled	—		$—
	Outstanding at March 31, 2013	250,835		$25.53		1.8	$4,441
	Exercised	(8,967	)	$26.33
	Canceled	(1,600	)	$8.00
	Outstanding at June 30, 2013	240,268		$25.62		1.6	$5,886
	Exercised	(18,600	)	$24.47
	Canceled	—		$—
	Outstanding at September 30, 2013	221,668		$25.72		1.3	$5,709
	Vested at September 30, 2013	221,668		$25.72		1.3	$5,709

Earnings_per_Share_Tables

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The basic and diluted EPS calculations are shown below:
		For the Three Months Ended				For the Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Net income	$	34,386	$	32,144	$	95,674	$	88,108
	Weighted average number of common shares outstanding – basic	41,307		41,484		41,353		41,370
	Effect of dilutive stock options	95		122		87		122
	Effect of dilutive restricted stock awards	211		275		166		393
	Weighted average number of common shares outstanding – diluted	41,613		41,881		41,606		41,885
	Basic earnings per common share	$	0.83	$	0.77	$	2.31	$	2.13
	Diluted earnings per common share	$	0.83	$	0.77	$	2.3	$	2.1

Operating_Segment_Tables

Operating Segment (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Revenue from External Customers by Products and Services	The following table presents revenue for the three and nine months ended September 30, 2013 and 2012:
		For the Three Months Ended				For the Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Membership dues	$	195,657	$	187,568	$	576,847	$	547,933
	Enrollment fees	3,598		3,859		10,567		11,742
	Personal training	46,095		42,138		138,903		126,675
	Other in-center revenue	51,139		48,405		147,577		138,602
	Total center revenue	296,489		281,970		873,894		824,952
	Other revenue	19,522		12,903		40,972		26,672
	Total revenue	$	316,011	$	294,873	$	914,866	$	851,624

Supplementary_Cash_Flow_Inform1

Supplementary Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]
Decreases (Increases) in Operating Assets and Increases (Decreases) in Operating Liabilities	Decreases (increases) in operating assets and increases (decreases) in operating liabilities are as follows:
		For the Nine Months Ended
		September 30,
		2013			2012
	Accounts receivable, net	$	(657	)	$	(2,566	)
	Income tax receivable	—			5,022
	Center operating supplies and inventories	(3,458		)	(5,008		)
	Prepaid expenses and other current assets	4,180			(443		)
	Deferred membership origination costs	1,718			340
	Accounts payable	(3,585		)	4,036
	Accrued expenses	8,604			25,618
	Deferred revenue	(6,762		)	547
	Deferred rent liability	2,384			2,382
	Other liabilities	302			501
	Changes in operating assets and liabilities	$	2,726		$	30,429

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Derivative Financial Instrument	The following table presents the fair value of our derivative financial instrument as of September 30, 2013 and December 31, 2012:
				Fair Value Measurements Using:
				Quoted Prices in	Significant		Significant
		Total		Active Markets for	Other Observable		Unobservable
		Fair		Identical Assets	Inputs		Inputs
		Value		(Level 1)	(Level 2)		(Level 3)
	Interest rate swap liability as of
	30-Sep-13	$4,108		$—	$4,108		$—
	Interest rate swap liability as of
	December 31, 2012	$6,052		$—	$6,052		$—
Carrying Value and Estimated Fair Value of Financial Liabilities	The following table presents the carrying value and the estimated fair value of long-term debt:
		September 30, 2013						December 31, 2012
		Carrying Value			Estimated Fair Value			Carrying Value		Estimated Fair Value
	Fixed-rate debt	$	490,936		$	492,192		$	396,591	$	403,659
	Obligations under capital leases	15,083			15,251			15,441		15,582
	Floating-rate debt	282,773			282,773			292,437		292,437
	Total	$	788,792		$	790,216		$	704,469	$	711,678

Changes_in_Accumulated_Other_C1

Changes in Accumulated Other Comprehensive Income by Component (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents information about accumulated other comprehensive income (loss) by component for the nine months ended September 30, 2013 (net of tax):
		Gains (Losses) on Cash Flows Hedge			Foreign Currency Translation Adjustments			Accumulated Other Comprehensive Loss
	Balance at December 31, 2012	$	(3,631	)	$	(1,170	)	$	(4,801	)
	Other comprehensive income	321			(584		)	(263		)
	Balance at March 31, 2013	(3,310		)	(1,754		)	(5,064		)
	Other comprehensive income	1,067			(1,123		)	(56		)
	Balance at June 30, 2013	(2,243		)	(2,877		)	(5,120		)
	Other comprehensive income	(221		)	349			128
	Balance at September 30, 2013	$	(2,464	)	$	(2,528	)	$	(4,992	)

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes In Goodwill	The change in the carrying amount of goodwill is as follows:
	Balance at December 31, 2012	$	37,176
	Goodwill acquired	12,080
	Balance at September 30, 2013	$	49,256
Schedule Of Changes In Intangible Assets Excluding Goodwill	The following table summarizes the changes in our gross intangible balance during the nine months ended September 30, 2013:
	Balance at December 31, 2012	$	28,531
	Trade/brand names acquired	5,347
	Balance at September 30, 2013	$	33,878
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill	At September 30, 2013, intangible assets consisted of the following:
		Gross		Accumulated Amortization		Net
	Leasehold rights	$	6,392	$	1,324	$	5,068
	Trade/brand names	15,479		885		14,594
	Curriculum- and technology-based intangibles	6,595		1,146		5,449
	Customer relationships	5,412		812		4,600
	Total intangible assets	$	33,878	$	4,167	$	29,711

ShareBased_Compensation_Detail

Share-Based Compensation (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
	share_based_compensation_plan		share_based_compensation_plan
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Number of share-based compensation plans (plans)	4		4
Common stock reserved for grant (shares)	2,500,000		2,500,000
Common stock available for grant (shares)	1,149,485		1,149,485
Options to purchase common stock granted under the share-based compensation plans to date (shares)	5,587,165		5,587,165
Options outstanding (shares)	221,668		221,668		240,268	250,835	291,510
Share-based compensation	$3,124	$3,550	$9,410	$10,862
Restricted Stock [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Restricted shares granted (shares)	4,740,571		4,740,571
Nonvested stock outstanding (shares)	1,517,185		1,517,185		1,523,156	1,569,035	2,069,168
Share-based compensation	3,094	3,520	9,320	10,772
Employee Stock Purchase Plan [Member]
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	$30	$30	$90	$90

Summary_of_Restricted_Stock_Ac

Summary of Restricted Stock Activity (Details) (USD $)	3 Months Ended			9 Months Ended		1 Months Ended			3 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Aug. 31, 2012	Jul. 31, 2012	31-May-12	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
	Restricted Stock [Member]	Restricted Stock [Member]	Restricted Stock [Member]	Restricted Stock [Member]	Restricted Stock [Member]	Performance Based Restricted Stock [Member]	Performance Based Restricted Stock [Member]	Performance Based Restricted Stock [Member]	Performance Based Restricted Stock [Member]	Group1 [Member]	Group1 [Member]	Group2 [Member]
										Performance Based Restricted Stock [Member]	Performance Based Restricted Stock [Member]	Performance Based Restricted Stock [Member]
										Fiscal Year 2015 [Member]	Fiscal Year 2016 [Member]	Fiscal Year 2016 [Member]
Shares
Outstanding at beginning of period (in shares)	1,523,156	1,569,035	2,069,168	2,069,168
Granted (in shares)	9,150	25,406	328,550	363,106	1,039,526	20,000	40,500	598,000
Canceled (in shares)	-6,375	-39,476	-10,995
Vested (in shares)	-8,746	-31,809	-817,688
Outstanding at end of period (in shares)	1,517,185	1,523,156	1,569,035	1,517,185					651,500
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$44.11	$43.95	$36.55	$36.55
Granted (in dollars per share)	$48.77	$47.58	$41.94
Canceled (in dollars per share)	$42.70	$43.40	$34.63
Vested (in dollars per share)	$41.99	$39.54	$24.55
Outstanding at end of period (in dollars per share)	$44.16	$44.11	$43.95	$44.16
Equity instruments other than options - aggregate fair value of grant during period				$15.40	$49.20
Equity instruments other than options - vested in period				21.7	19.1
Unrecognized compensation expense	29.4			29.4					29.9
Unrecognized compensation, weighted average period of recognition				2 years 4 months 24 days
Vesting percentage of the diluted EPS targets (in percent)										50.00%	50.00%	100.00%
The number times the compound annual growth rate under current long rang plan for the earning per share target.									1.5
The number times the return on invested capital for the return on invested capital target									1.1
Additional share based compensation expense recognized at balance sheet date if all performance targets were probable at balance sheet date									$10.20

Summary_of_Stock_Option_Activi

Summary of Stock Option Activity (Details) (USD $)	3 Months Ended			9 Months Ended		12 Months Ended	9 Months Ended		1 Months Ended	9 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013	Jun. 01, 2006	Aug. 31, 2011	Sep. 30, 2013	Aug. 31, 2013	Sep. 30, 2013	Sep. 30, 2013
							Employee Stock Purchase Plan [Member]	Employee Stock Purchase Plan [Member]	2011 Share Repurchase Program [Member]	2011 Share Repurchase Program [Member]	2013 Share Repurchase Program [Member]	2013 Share Repurchase Program [Member]	2013 Share Repurchase Program [Member]
Shares
Outstanding at beginning of period (in shares)	240,268	250,835	291,510	291,510
Exercised (in shares)	-18,600	-8,967	-40,675
Canceled (in shares)	0	-1,600	0
Outstanding at end of period (in shares)	221,668	240,268	250,835	221,668		291,510
Vested at period end (in shares)	221,668			221,668
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$25.62	$25.53	$24.96	$24.96
Exercised (in dollars per share)	$24.47	$26.33	$21.44
Canceled (in dollars per share)	$0	$8	$0
Outstanding at end of period (in dollars per share)	$25.72	$25.62	$25.53	$25.72		$24.96
Vested at end of period (in dollars per share)	$25.72			$25.72
Weighted Average Remaining Contractual Term In Years
Weighted average remaining contractual term (in years)	1 year 3 months 18 days	1 year 7 months 6 days	1 year 9 months 18 days			2 years
Vested at end of period (in years)	1 year 3 months 18 days
Aggregate Intrinsic Value
Outstanding at beginning of period (in dollars)	$5,886,000	$4,441,000	$7,073,000	$7,073,000
Outstanding at end of period (in dollars)	5,709,000	5,886,000	4,441,000	5,709,000		7,073,000
Vested at end of period (in dollars)	5,709,000			5,709,000
Total intrinsic value of options exercised (in dollars)				1,600,000	3,100,000
Net cash proceeds from the exercise of stock options (in dollars)				1,563,000	2,088,000
Income tax benefit from share-based payment arrangements (in dollars)				6,575,000	9,138,000
Employee Stock Purchase Plan [Abstract]
Maximum ESPP common stock shares that can be sold to employees (shares)							1,500,000
Percentage of fair market value cost per share under the plan (percent)							90.00%
Discount percentage under the plan (percent)							10.00%
Employee withholding for the purchase of shares (in dollars)							1,100,000
ESPP common stock available for purchase (shares)							1,260,727
Board of Directors authorized the repurchase of common stock (sahres)								500,000
Share repurchases (shares)							27,093			682,634			186,701
Value of shares repurchased (in dollars)							1,300,000			31,000,000			9,300,000
Remaining shares authorized for repurchase (shares)							260,727
Stock repurchase program, authorized amount (in dollars)									$60,000,000		$200,000,000	$190,700,000

Earnings_per_Share_Additional_

Earnings per Share - Additional Information (Detail) (Stock Options [Member])	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from the calculation of diluted EPS (shares)	0	15,540	2,477	2,477

Basic_and_Diluted_Earnings_Per

Basic and Diluted Earnings Per Share Calculations (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income	$34,386	$32,144	$95,674	$88,108
Weighted average number of common shares outstanding - basic (shares)	41,307	41,484	41,353	41,370
Weighted average number of common shares outstanding - diluted (shares)	41,613	41,881	41,606	41,885
Basic earnings per common share (in dollars per share)	$0.83	$0.77	$2.31	$2.13
Diluted earnings per common share (in dollars per share)	$0.83	$0.77	$2.30	$2.10
Stock Options [Member]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Effect of dilutive share based compensation (shares)	95	122	87	122
Restricted Stock [Member]
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Effect of dilutive share based compensation (shares)	211	275	166	393

Operating_Segment_Details

Operating Segment (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue from External Customer [Line Items]
Membership dues	$195,657	$187,568	$576,847	$547,933
Enrollment fees	3,598	3,859	10,567	11,742
Other in-center revenue	97,234	90,543	286,480	265,277
Total center revenue	296,489	281,970	873,894	824,952
Other revenue	19,522	12,903	40,972	26,672
Total revenue	316,011	294,873	914,866	851,624
Personal Training
Revenue from External Customer [Line Items]
Other in-center revenue	46,095	42,138	138,903	126,675
Other in-center revenue
Revenue from External Customer [Line Items]
Other in-center revenue	$51,139	$48,405	$147,577	$138,602

Decreases_Increases_in_Operati

Decreases (Increases) in Operating Assets and Increases (Decreases) in Operating Liabilities (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]
Accounts receivable, net	($657)	($2,566)
Income tax receivable	0	5,022
Center operating supplies and inventories	-3,458	-5,008
Prepaid expenses and other current assets	4,180	-443
Deferred membership origination costs	1,718	340
Accounts payable	-3,585	4,036
Accrued expenses	8,604	25,618
Deferred revenue	-6,762	547
Deferred rent liability	2,384	2,382
Other liabilities	302	501
Changes in operating assets and liabilities	$2,726	$30,429

Supplementary_Cash_Flow_Inform2

Supplementary Cash Flow Information - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Supplemental Cash Flow Information [Abstract]
Cash payments for income taxes	$54,300,000	$45,000,000
Cash payments for interest, net of capitalized interest	16,900,000	17,800,000
Capitalized interest	2,000,000	700,000
Construction accounts payable	$51,820,000	$17,200,000	$25,208,000

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Aug. 31, 2011	Aug. 31, 2011
			Interest Rate Swap [Member]	Interest Rate Swap [Member]
				Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, notional amount			$200,000,000
Derivative, fixed interest rate (in percent)				1.32%
Accumulated other comprehensive loss, net of tax	2,500,000
Fair market value of swap contract	$4,108,000	$6,052,000

Carrying_Value_and_Estimated_F

Carrying Value and Estimated Fair Value of Long-Term Debt (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fair market value of swap contract	$4,108	$6,052
Carrying Value
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fixed-rate debt	490,936	396,591
Obligations under capital leases	15,083	15,441
Floating-rate debt	282,773	292,437
Total	788,792	704,469
Estimated Fair Value
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fixed-rate debt	492,192	403,659
Obligations under capital leases	15,251	15,582
Floating-rate debt	282,773	292,437
Total	790,216	711,678
Fair Value, Inputs, Level 1 [Member]
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fair market value of swap contract	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fair market value of swap contract	4,108	6,052
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurement Inputs, Disclosure [Line Items]
Fair market value of swap contract	$0	$0

Changes_in_Accumulated_Other_C2

Changes in Accumulated Other Comprehensive Income by Component (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
					Accumulated Net Unrealized Investment Gain (Loss) [Member]	Accumulated Net Unrealized Investment Gain (Loss) [Member]	Accumulated Net Unrealized Investment Gain (Loss) [Member]	Accumulated Translation Adjustment [Member]	Accumulated Translation Adjustment [Member]	Accumulated Translation Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance			($4,801)		($2,243)	($3,310)	($3,631)	($2,877)	($1,754)	($1,170)	($5,120)	($5,064)	($4,801)
Other comprehensive income	128	-758	-190	-2,197	-221	1,067	321	349	-1,123	-584	128	-56	-263
Ending balance	($4,992)		($4,992)		($2,464)	($2,243)	($3,310)	($2,528)	($2,877)	($1,754)	($4,992)	($5,120)	($5,064)

LongTerm_Debt_LongTerm_Debt_De

Long-Term Debt Long-Term Debt (Details) (USD $)	0 Months Ended
	Aug. 23, 2013	Feb. 12, 2013	Jul. 31, 2013	Feb. 13, 2013	Jun. 30, 2011
	properties	properties
Long-Term Debt [Line Items]
Maximum borrowing capacity			$760,000,000		$660,000,000
Potential increase to borrowing capacity			240,000,000
Face amount	50,000,000			75,000,000
Number properties used to secure debt (properties)	3	5
Stated interest rate (percent)	4.48%			4.45%
Periodic payment	400,000	800,000
Loans [Member]
Long-Term Debt [Line Items]
Additional borrowings in the form of a term loan			$100,000,000
Stated amortization rate (percent)			5.00%

Intangible_Assets_Schedule_of_

Intangible Assets Schedule of Changes in Goodwill (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Goodwill [Roll Forward]
Balance at December 31, 2012	$37,176
Goodwill acquired	12,080
Balance at September 30, 2013	$49,256

Intangible_Assets_Schedule_of_1

Intangible Assets Schedule of Changes in Intangible Assets (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Intangible Assets Excluding Goodwill [Roll Forward]
Balance at December 31, 2012	$28,531
Trade/brand names acquired	5,347
Balance at September 30, 2013	$33,878

Recovered_Sheet1

Intangible Assets Schedule Of Carrying Value of Intangible Assets, Excluding Goodwill (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill [Line Items]
Total Intangible Assets	$33,878	$28,531
Intangible Assets, Accumulated Amortization	4,167
Intangible Assets, Net (Excluding Goodwill)	29,711
Leasehold Rights [Member]
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	6,392
Finite-Lived Intangible Assets, Accumulated Amortization	1,324
Finite-Lived Intangible Assets, Net	5,068
Trade Names [Member]
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill [Line Items]
Trade/Brand Names	15,479
Trade/Brand Names, Accumulated Amortization	885
Trade/Brand Names, Net	14,594
Curriculum and Technology Based Intangibles [Member]
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	6,595
Finite-Lived Intangible Assets, Accumulated Amortization	1,146
Finite-Lived Intangible Assets, Net	5,449
Customer Relationships [Member]
Schedule Of Carrying Value Of Intangible Assets Excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	5,412
Finite-Lived Intangible Assets, Accumulated Amortization	812
Finite-Lived Intangible Assets, Net	$4,600

Intangible_Assets_Intangible_A1

Intangible Assets Intangible Assets- Text (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Schedule Of Changes In Intangible Assets Excluding Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Amortization of Intangible Assets	$1.50	$1
Trade Names [Member]
Schedule Of Changes In Intangible Assets Excluding Goodwill [Line Items]
Indefinite-Lived Trade Names	5.1
Finite Lived Trade Names, Net	$0.20