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RELATED PARTY TRANSACTIONS (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Nov. 01, 2014
Independent Director To Board of Directors    
Related Party Transaction [Line Items]    
Maximum reimbursement of out-of-pocket costs   $ 300,000epiq_RelatedPartyTransactionMaximumAggregateReimbursementOfExpenses
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= epiq_IndependentDirectorToBoardOfDirectorsMember
Senior Vice President Corporate Relations And Business Development    
Related Party Transaction [Line Items]    
Cash compensation $ 900,000epiq_RelatedPartyTransactionCashCompensationPaid
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= epiq_SeniorVicePresidentCorporateRelationsAndBusinessDevelopmentMember