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DISCONTINUED OPERATIONS (Details 6) (LendingTree Loans, Discontinued operations, USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Loans held for sale
       
Gains (losses) included in earnings relating to assets and liabilities that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3)        
Total net gains (losses) included in earnings relating to assets $ (380) $ (83) $ (147) $ (86)
Change in unrealized gains (losses) relating to assets still held at the end of the period (412)   (412) (44)
Interest Rate Lock Commitments
       
Gains (losses) included in earnings relating to assets and liabilities that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3)        
Total net gains included in earnings   40,680 73,378 81,847
Change in unrealized losses relating to assets and liabilities still held at the end of the period   12,747   12,747
Forward delivery contracts
       
Gains (losses) included in earnings relating to assets and liabilities that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3)        
Total net gains included in earnings   69 846 302
Change in unrealized losses relating to assets and liabilities still held at the end of the period   $ 32   $ 32