DISCONTINUED OPERATIONS (Details 4) (Lending Tree Loans, USD $)	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measurements
Loans held for sale		$ 217,467,000
Assets and Liabilities at fair value	(30,528,000)	(6,967,000)
Interest Rate Lock Commitments | Discontinued operations
Fair Value Measurements
Number of goals to be achieved by modifying valuation calculation	2
Significant Unobservable Inputs (Level 3) | Interest Rate Lock Commitments
Fair Value Measurements
Notional value outstanding	0	363,800,000
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value Measurements
Loans held for sale		217,172,000
Assets and Liabilities at fair value		213,065,000
Fair value on a recurring basis | Significant Other Observable Inputs (Level 2) | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		(4,107,000)
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Loans held for sale		295,000
Assets and Liabilities at fair value		9,436,000
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3) | Interest Rate Lock Commitments
Fair Value Measurements
Assets and Liabilities at fair value		9,122,000
Fair value on a recurring basis | Significant Unobservable Inputs (Level 3) | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		19,000
Fair value on a recurring basis | Total Fair Value Measurements
Fair Value Measurements
Loans held for sale		217,467,000
Assets and Liabilities at fair value		222,501,000
Fair value on a recurring basis | Total Fair Value Measurements | Interest Rate Lock Commitments
Fair Value Measurements
Assets and Liabilities at fair value		9,122,000
Fair value on a recurring basis | Total Fair Value Measurements | Forward delivery contracts
Fair Value Measurements
Assets and Liabilities at fair value		$ (4,088,000)