Acquisitions - Schedule of Net Assets Acquired (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Feb. 28, 2019	Dec. 31, 2018	Sep. 30, 2018	Aug. 31, 2018	Apr. 30, 2018	Jan. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 32,811		$ 21,877
Around the Clock Fitness
Business Acquisition [Line Items]
Fixed assets		$ 8,803
Goodwill		9,856
Operating lease right-of-use assets		17,812
Operating lease liabilities		(18,212)
Deferred revenue		(847)
Total allocation of purchase price		21,667
Around the Clock Fitness | Membership Lists
Business Acquisition [Line Items]
Definite lived intangible assets		610
Around the Clock Fitness | Trade Names
Business Acquisition [Line Items]
Definite lived intangible assets		2,221
Around the Clock Fitness | Non-compete Agreement
Business Acquisition [Line Items]
Definite lived intangible assets		$ 1,424
Acquistion in the Boston Metropolitan Region, December 2018
Business Acquisition [Line Items]
Fixed assets			3,680
Goodwill			7,041
Deferred revenue			(854)
Total allocation of purchase price (less noncontrolling interest)			12,267
Total allocation of purchase price			12,267
Acquistion in the Boston Metropolitan Region, December 2018 | Membership Lists
Business Acquisition [Line Items]
Definite lived intangible assets			1,435
Acquistion in the Boston Metropolitan Region, December 2018 | Trade Names
Business Acquisition [Line Items]
Definite lived intangible assets			248
Acquistion in the Boston Metropolitan Region, December 2018 | Non-compete Agreement
Business Acquisition [Line Items]
Definite lived intangible assets			$ 717
LIV Fitness
Business Acquisition [Line Items]
Fixed assets				$ 2,134
Goodwill				2,648
Operating lease right-of-use assets				(400)
Deferred revenue				(592)
Total allocation of purchase price				4,930
LIV Fitness | Membership Lists
Business Acquisition [Line Items]
Definite lived intangible assets				480
LIV Fitness | Trade Names
Business Acquisition [Line Items]
Definite lived intangible assets				340
LIV Fitness | Non-compete Agreement
Business Acquisition [Line Items]
Definite lived intangible assets				320
Existing Clubs In New York Metropolitan Region
Business Acquisition [Line Items]
Fixed assets				703
Goodwill				232
Capital lease liability				(76)
Other assets and liabilities assumed, net				(106)
Deferred revenue				(476)
Total allocation of purchase price (less noncontrolling interest)				$ 277
Palm Beach Sports Clubs
Business Acquisition [Line Items]
Fixed assets					$ 5,646
Goodwill					2,728
Amount due to seller, net					(610)
Deferred revenue					(860)
Non-controlling interest					(495)
Total allocation of purchase price (less noncontrolling interest)					6,697
Palm Beach Sports Clubs | Membership Lists
Business Acquisition [Line Items]
Definite lived intangible assets					$ 288
Total Woman
Business Acquisition [Line Items]
Fixed assets						$ 8,064
Goodwill						1,584
Working capital, net						161
Deferred revenue						(4,546)
Total allocation of purchase price						7,265
Total Woman | Trade Names
Business Acquisition [Line Items]
Definite lived intangible assets						1,562
Total Woman | Favorable Lease Commitment
Business Acquisition [Line Items]
Operating lease right-of-use assets						$ 440
Existing Club and Property in Boston Metropolitan Region
Business Acquisition [Line Items]
Fixed assets							$ 982
Goodwill							1,075
Working capital, net							130
Deferred revenue							(321)
Total allocation of purchase price							2,866
Existing Club and Property in Boston Metropolitan Region | Membership Lists
Business Acquisition [Line Items]
Definite lived intangible assets							600
Existing Club and Property in Boston Metropolitan Region | Non-compete Agreement
Business Acquisition [Line Items]
Definite lived intangible assets							$ 400