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INCOME TAXES INCOME TAXES (Details - Unrecognized Tax Benefits) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of unrecognized tax benefits, excluding interest    
Balance, beginning of the period $ 36,000us-gaap_UnrecognizedTaxBenefits $ 0us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions of prior years 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 36,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Lapse of statute of limitations (13,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations 0us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Balance, end of the period 23,000us-gaap_UnrecognizedTaxBenefits 36,000us-gaap_UnrecognizedTaxBenefits
Interest on unrecognized tax benefits    
Unrecognized tax benefit including interest $ 25,000tree_UnrecognizedTaxBenefitsIncludingInterest $ 40,000tree_UnrecognizedTaxBenefitsIncludingInterest