CONTINGENCIES (Details) (USD $)
0 Months Ended 1 Months Ended 0 Months Ended 12 Months Ended
Oct. 14, 2011
regulator
Apr. 24, 2015
regulator
Dec. 31, 2012
patent
Jun. 30, 2013
patent
Jul. 31, 2014
Sep. 08, 2010
patent
Dec. 31, 2014
Mar. 31, 2015
Oct. 25, 2013
patent
Sep. 30, 2014
Mar. 12, 2014
patent
Contingencies                      
Accrued litigation liability             $ 2,786,000 $ 2,972,000      
Massachusetts Division of Banks [Member] | Unfavorable regulatory action                      
Contingencies                      
Accrued litigation liability               500,000      
Range of possible loss, minimum               500,000      
Range of possible loss, maximum               6,500,000      
Number of Joining Regulators 34                    
Massachusetts Division of Banks [Member] | Unfavorable regulatory action | Subsequent Event [Member]                      
Contingencies                      
Number of Joining Regulators   0                  
Pending litigation or appeal | Internet Patents Corporation f/k/a InsWeb v. Tree.com, Inc.                      
Contingencies                      
Number of patents found not infringed upon                 1    
Number of patents alleged infringement upon, maximum     1                
Pending litigation or appeal | The Money Suite Company vs. LendingTree, LLC                      
Contingencies                      
Number of patents alleged infringement upon, maximum       1              
Pending litigation or appeal | Lijkel Dijkstra v. Harry Carenbauer, Home Loan Center, Inc                      
Contingencies                      
Accrued litigation liability               2,800,000      
Litigation loss         2,800,000            
Pending litigation or appeal | Lending Tree v. Zillow, Inc.                      
Contingencies                      
Accrued litigation liability               2,400,000      
Number of patents found not infringed upon                     2
Litigation loss             2,300,000        
Range of possible loss, maximum                   $ 9,700,000  
Number of patents alleged infringement upon, maximum           2