Loss Contingency, Number of Patents Found Not Infringed Upon

No definition available.

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- Definition

This element represents the number of state mortgage regulation divisions that agree to not pursue litigation as part of an agreement for the company to sign a Consent Agreement and Order.

+ References

No definition available.

+ Details

Name:	tree_NumberOfJoiningRegulators
Namespace Prefix:	tree_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Patents Infringed

+ References

No definition available.

+ Details

Name:	tree_NumberofPatentsInfringed
Namespace Prefix:	tree_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyRangeOfPossibleLossMaximum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The estimated minimum amount of possible loss from the contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyRangeOfPossibleLossMinimum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_LitigationCaseAxis=tree_FederalTradeCommissionMemberDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_UnfavorableRegulatoryActionMember
Namespace Prefix:
Data Type:	na
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CONTINGENCIES (Details) (USD $)	0 Months Ended		12 Months Ended	0 Months Ended	1 Months Ended
CONTINGENCIES (Details) (USD $)	Oct. 14, 2011 regulator	Mar. 09, 2015 regulator	Dec. 31, 2014	Sep. 08, 2010 patent	Jul. 31, 2014	Dec. 31, 2013	Mar. 12, 2014 patent
Contingencies
Accrued litigation liabilities			$ 2,786,000us-gaap_LitigationReserve			$ 500,000us-gaap_LitigationReserve
Massachusetts Division of Banks
Contingencies
Accrued litigation liabilities			500,000
Range of possible loss, minimum			500,000.0
Range of possible loss, maximum			6,500,000.0
Number of Joining Regulators	34
Massachusetts Division of Banks \| Subsequent event
Contingencies
Number of Joining Regulators		0
Federal Trade Commission [Member] [Domain]
Contingencies
Litigation settlement			0
Pending litigation or appeal \| Lending Tree v. Zillow, Inc.
Contingencies
Accrued litigation liabilities			2,300,000
Number of patents infringed				1
Number of patents found not infringed upon							2
Litigation settlement			2,300,000
Range of possible loss, maximum			9,700,000
Pending litigation or appeal \| Lijkel Dijkstra v. Harry Carenbauer, Home Loan Center, Inc
Contingencies
Accrued litigation liabilities			2,800,000
Litigation settlement					$ 2,800,000