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Subsequent Event - Additional Information (Detail) - Apr. 01, 2016 - Subsequent Event - Repligen Sweden - Share Purchase Agreement
€ in Millions
USD ($)
EUR (€)
Subsequent Event [Line Items]    
Consideration paid to seller, cash $ 9,100,000  
Consideration paid to seller, shares $ 538,700  
Future contingent payment if revenue increases by specified amount | €   € 1.0