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LIQUIDITY AND MANAGEMENT'S PLAN (Detail Textuals) (USD $)
1 Months Ended 3 Months Ended 12 Months Ended
Nov. 20, 2014
Dec. 31, 2014
Dec. 31, 2013
Sep. 30, 2014
Sep. 30, 2013
Liquidity And Management Plan [Abstract]          
Accumulated deficit   $ (207,588,916)us-gaap_RetainedEarningsAccumulatedDeficit   $ (199,760,272)us-gaap_RetainedEarningsAccumulatedDeficit  
Net loss   (7,828,644)us-gaap_NetIncomeLoss (6,291,650)us-gaap_NetIncomeLoss    
Operating cash flow   (2,355,835)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (2,066,448)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations    
Working capital   2,413,855apdn_WorkingCapitalSurplusDeficit      
Cash and cash equivalents   2,871,570us-gaap_CashAndCashEquivalentsAtCarryingValue 4,199,343us-gaap_CashAndCashEquivalentsAtCarryingValue 1,393,132us-gaap_CashAndCashEquivalentsAtCarryingValue 6,360,301us-gaap_CashAndCashEquivalentsAtCarryingValue
Gross proceeds from underwritten public offering of common stock and warrants 9,300,000apdn_GrossProceedsFromUnderwrittenPublicOfferingOfCommonStockAndWarrants        
Gross proceeds to repurchase remaining Series B Warrants 4,091,000apdn_GrossProceedsToRepurchaseRemainingSeriesBWarrants        
Proceeds from issuance of private placement of common stock and warrants       2,156,264us-gaap_ProceedsFromIssuanceOfPrivatePlacement  
Proceeds from promissory notes       1,800,000apdn_ProceedsFromPromissoryNotes  
Proceeds from promissory notes from related party       $ 1,000,000apdn_ProceedsFromPromissoryNotesFromRelatedParty