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SHAREHOLDERS' EQUITY (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
May 07, 2014
Jan. 11, 2010
Calculation of weighted average common shares        
Weighted average common shares, basic 11,304,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 11,142,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic    
Effect of dilutive securities        
Effect of stock options (in shares) 693,000us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements    
Effect of dilutive share awards (in shares) 168,000tree_IncrementalCommonSharesAttributableToRestrictedStockUnits 0tree_IncrementalCommonSharesAttributableToRestrictedStockUnits    
Weighted average common shares, diluted 12,165,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 11,142,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding    
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)   700,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount    
Common stock repurchases        
Value of common stock authorized to be repurchased     $ 10,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1 $ 10,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
Purchase of treasury stock (in shares) 5,250us-gaap_TreasuryStockSharesAcquired      
Remaining authorized repurchase amount $ 7,300,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1