DISCONTINUED OPERATIONS (Details 6) (Lending Tree Loans, Discontinued operations, USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012
Gain/(loss) recognized in the consolidated statements of operations for derivatives
Gain/(Loss) recognized in Income on Derivative	$ 46,948
Interest Rate Lock Commitments
Gain/(loss) recognized in the consolidated statements of operations for derivatives
Gain/(Loss) recognized in Income on Derivative	42,387
Forward delivery contracts
Gain/(loss) recognized in the consolidated statements of operations for derivatives
Gain/(Loss) recognized in Income on Derivative	$ 4,561

Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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:	duration