ORGANIZATION (Details) (USD $)	3 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended
	Mar. 31, 2011 segment	Sep. 30, 2012 segment	Sep. 30, 2011 RealEstate.com Internet domain names and trademarks	Sep. 30, 2012 LendingTree Loans	Sep. 30, 2011 LendingTree Loans	Sep. 30, 2012 LendingTree Loans Discover Bank	Jun. 30, 2012 LendingTree Loans Discover Bank	Feb. 07, 2012 LendingTree Loans Discover Bank
ORGANIZATION
Number of reportable business segments	2	1
Organization- Discontinued Operations
Proceeds from sale of assets			$ 8,300,000
Gain on sale of internet domain names and trademarks			7,800,000
Amount receivable for sale of assets								55,900,000
Amount received from sale of assets prior to closing								8,000,000
Amount received from sale of assets on the closing								37,900,000
Amount received from sale of assets on the first anniversary of the closing								10,000,000
Portion of the initial purchase price payment held in escrow for certain actual and/or contingent liabilities							17,100,000
Period for which marketing related services are to be provided						17 months
The pro forma financial information
Revenue				53,501,000	43,951,000
Net loss from continuing operations				(4,752,000)	(44,608,000)
Net loss attributable to common shareholders				$ (4,752,000)	$ (44,608,000)
Basic earnings per share attributable to common shareholders				$ (0.42)	$ (4.06)
Diluted earnings per share attributable to common shareholders				$ (0.42)	$ (4.06)