DISCONTINUED OPERATIONS (Details 4) (LendingTree Loans, USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurements
Loans held for sale		$ 217,467
Assets and Liabilities at fair value	(31,010)	(11,681)
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value Measurements
Loans held for sale		217,172
Assets and Liabilities at fair value		213,065
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2) | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		(4,107)
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Loans held for sale		295
Assets and Liabilities at fair value		9,436
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3) | Interest Rate Lock Commitments
Fair Value Measurements
Assets and Liabilities at fair value		9,122
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3) | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		19
Fair value on a recurring basis | Total Fair Value Measurements
Fair Value Measurements
Loans held for sale		217,467
Assets and Liabilities at fair value		222,501
Fair value on a recurring basis | Total Fair Value Measurements | Interest Rate Lock Commitments
Fair Value Measurements
Assets and Liabilities at fair value		9,122
Fair value on a recurring basis | Total Fair Value Measurements | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		$ (4,088)