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NONCONTROLLING INTEREST (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Noncontrolling Interest [Line Items]                    
Pinwrest net loss before common units' noncontrolling interest $ (857)us-gaap_NetIncomeLoss $ (578)us-gaap_NetIncomeLoss $ 729us-gaap_NetIncomeLoss $ (187)us-gaap_NetIncomeLoss $ (580)us-gaap_NetIncomeLoss $ (735)us-gaap_NetIncomeLoss $ (979)us-gaap_NetIncomeLoss $ (935)us-gaap_NetIncomeLoss $ (893)us-gaap_NetIncomeLoss $ (3,229)us-gaap_NetIncomeLoss
Noncontrolling interest percentage (in hundredths) 70.00%us-gaap_MinorityInterestOwnershipPercentageByParent               70.00%us-gaap_MinorityInterestOwnershipPercentageByParent  
Loss attributable to noncontrolling interest                 (721)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity (331)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
4Licencing Corp [Member]                    
Noncontrolling Interest [Line Items]                    
Percentage of ownership (in hundredths) 70.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
              70.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
 
Pinwrest [Member]                    
Noncontrolling Interest [Line Items]                    
Pinwrest net loss before common units' noncontrolling interest                 (2,404)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,105)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Noncontrolling interest percentage (in hundredths) 30.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
      30.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
      30.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
30.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Loss attributable to noncontrolling interest                 (721)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(331)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Loss in excess of noncontrolling interest absorbed $ 2,457four_LossInExcessOfNoncontrollingInterestAbsorbedByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
              $ 2,457four_LossInExcessOfNoncontrollingInterestAbsorbedByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember