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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Assets :      
Money market funds $ 18,768us-gaap_MoneyMarketFundsAtCarryingValue $ 54,267us-gaap_MoneyMarketFundsAtCarryingValue  
Total Gains (Losses) 0us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss 0us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss  
Liabilities :      
Contingent consideration 1,980plus_ContingentConsiderationAtFairValue   0plus_ContingentConsiderationAtFairValue
Total Gains (Losses) (140)us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss    
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]      
Assets :      
Money market funds 18,768us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
54,267us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
 
Liabilities :      
Contingent consideration 0plus_ContingentConsiderationAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
   
Significant Other Observable Inputs (Level 2) [Member]      
Assets :      
Money market funds 0us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
0us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
 
Liabilities :      
Contingent consideration 0plus_ContingentConsiderationAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
   
Significant Unobservable Inputs (Level 3) [Member]      
Assets :      
Money market funds 0us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
0us-gaap_MoneyMarketFundsAtCarryingValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Liabilities :      
Contingent consideration $ 1,980plus_ContingentConsiderationAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member