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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Issuance of common stock for cash, financing costs $ 4,000,000ino_IssuanceOfCommonStockForCashFinancingCosts $ 585,000ino_IssuanceOfCommonStockForCashFinancingCosts $ 164,695ino_IssuanceOfCommonStockForCashFinancingCosts
Issuance of common stock and warrants for cash, financing costs 0ino_IssuanceOfCommonStockAndWarrantsForCashFinancingCosts     
Warrants For Cash [Member]      
Issuance of common stock and warrants for cash, financing costs