GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Finite-lived intangible assets and related accumulated amortization
Gross	$ 50,371
Accumulated Amortization	(39,433)
Net	10,938
Membership and customer lists
Finite-lived intangible assets and related accumulated amortization
Weighted average useful lives	5 years
Gross	34,679
Accumulated Amortization	(31,312)
Net	3,367
Deferred financing costs
Finite-lived intangible assets and related accumulated amortization
Weighted average useful lives	6 years
Gross	15,692
Accumulated Amortization	(8,121)
Net	$ 7,571

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant