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Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Details Textual)
CAD / shares in Units, $ / shares in Units, CAD in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Aug. 11, 2017
USD ($)
May 31, 2017
USD ($)
shares
Mar. 31, 2017
USD ($)
Jan. 31, 2017
USD ($)
Oct. 31, 2016
USD ($)
Apr. 28, 2016
USD ($)
$ / shares
shares
Oct. 31, 2015
USD ($)
Oct. 05, 2015
USD ($)
May 31, 2015
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
May 05, 2017
USD ($)
Apr. 28, 2016
CAD
CAD / shares
Sep. 30, 2015
USD ($)
May 20, 2015
USD ($)
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Stockholders' equity, reverse stock split, description                   On June 8, 2015, we reincorporated as a domestic Delaware corporation under Delaware General Corporate Law and changed our name from Rosewind Corporation to Aytu BioScience, Inc., and effected a reverse stock split in which each common stockholder received one share of common stock for every 12.174 shares held. On June 30, 2016, Aytu effected another reverse stock split in which each common stockholder received one share of common stock for every 12 shares held. On August 25, 2017, Aytu effected a third reverse stock split in which each common stockholder received one share of common stock for every 20 shares held (herein referred to collectively as the "Reverse Stock Splits"). All share and per share amounts in this report have been adjusted to reflect the effect of these Reverse Stock Splits.              
Contingent consideration                   $ 7,566,443   $ 7,386,782          
Intangible assets                   380,000              
Gross proceeds from the sales $ 11,800,000                                
Stock issued for first earn-out payment to nuelle shareholders                   11,589              
Third Upfront [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Final upfront payment       $ 4,000,000                          
ProstaScint [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Net identifiable asset acquired                                 $ 2,391,000
Contingent consideration                   6,000           $ 227,000  
Upfront fee amount                 $ 1,000,000                
Maximum aggregate payout for sale                 $ 2,500,000                
Percentage of net sales                 8.00%                
Contingent consideration valued                 $ 664,000                
Amortization expense of intangible assets                   12,000 $ 40,000            
Transfer of related product inventory                 $ 500,000                
Intangible assets, trade names                                 1,590,000
ProstaScint [Member] | Developed technology [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Amortization expense of intangible assets                   54,000              
ProstaScint [Member] | Trade names [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Amortization expense of intangible assets                   7,000              
ProstaScint [Member] | Customer contracts [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Amortization expense of intangible assets                   0              
Jazz Pharmaceuticals, Inc [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Net identifiable asset acquired                   2,400,000              
Jazz Pharmaceuticals, Inc [Member] | Prosta Scint [Member] | Developed technology [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets                                 790,000
Jazz Pharmaceuticals, Inc [Member] | Prosta Scint [Member] | Trade names [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets                                 80,000
Jazz Pharmaceuticals, Inc [Member] | Prosta Scint [Member] | Customer contracts [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets                                 $ 720,000
Primsol [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Net identifiable asset acquired               $ 1,799,000                  
Upfront fee amount             $ 500,000                    
Final upfront payment             142,000                    
Amortization expense of intangible assets                   0 61,000            
Intangible assets             102,000     102,000              
Transfer of related product inventory             40,000                    
Work-in-process inventory                   80,000              
Purchaser paid amount     $ 1,750,000                            
Intangible assets, trade names               1,470,000                  
Primsol [Member] | Selling, general and administrative expenses [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Recognized gain     $ 428,000                            
Primsol [Member] | Developed technology [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets             520,000                    
Amortization expense of intangible assets               $ 140,000                  
Primsol [Member] | Customer contracts [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets             810,000                    
Primsol [Member] | Paid on April 1, 2016 [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Final upfront payment             500,000                    
Primsol [Member] | Paid on July 1, 2016 [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Final upfront payment             500,000                    
Primsol [Member] | Paid in November 2016 [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Final upfront payment             $ 250,000                    
Natesto [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Net identifiable asset acquired                   10,500,000              
Upfront fee amount         $ 2,000,000 $ 2,000,000                      
Contingent consideration valued                   5,800,000   $ 5,700,000 $ 3,200,000        
Amortization expense of intangible assets                   330,000 330,000            
Stock issued aggregate shares | shares           12,245,411                      
Purchase of common stock value           $ 2,000,000                 CAD 2.5    
Purchase price per share | (per share)           $ 0.16                 CAD 0.207    
Contingent consideration accretion expenses                   $ 161,000 46,000            
Maximum aggregate amount payable milestone payments, Description                   One-time, non-refundable payments to Acerus within 45 days of the occurrence of the following events (provided that, the maximum aggregate amount payable under such milestone payments will be $37.5 million)              
Natesto [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Total of cost of sale                   $ 92,000              
Gross proceeds from the sales                   1,100,000              
Unrealized gain/loss on investment                   1,000,000 728,000            
Natesto [Member] | First Milestone [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments           $ 2,500,000                      
Sales revenue target           25,000,000                      
Natesto [Member] | Second Milestone [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments           5,000,000                      
Sales revenue target           50,000,000                      
Natesto [Member] | Third Milestone [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments           7,500,000                      
Sales revenue target           75,000,000                      
Natesto [Member] | Forth Milestone [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments           10,000,000                      
Sales revenue target           100,000,000                      
Natesto [Member] | Fifth Milestone [Member] | License and Supply Agreement [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments           12,500,000                      
Sales revenue target           125,000,000                      
Natesto [Member] | Second Upfront [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Contingent consideration           $ 2,000,000                      
Nuelle [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Net identifiable asset acquired                           $ 3,839,000      
Maximum aggregate payout for sale   $ 6,900,000                              
Contingent consideration valued   $ 1,900,000                              
Amortization expense of intangible assets                   38,000 0            
Stock issued aggregate shares | shares   125,000                              
One-time, non-refundable payments   $ 10,000,000                              
Sales revenue target   100,000,000                              
Contingent consideration accretion expenses                   20,000 $ 0            
Milestone payments potential aggregate value   $ 24,000,000                              
Intangible assets, trade names                           $ 1,540,000      
Liabilities assumed                   47,000              
Stock issued for first earn-out payment to nuelle shareholders                   $ 12,000              
Maximum aggregate amount payable milestone payments, Description                   One-time payments to the Nuelle stockholders within 90 days of the occurrence of the following events (provided that, the maximum aggregate amount payable under such milestone payments will be $24.0 million).              
Subsidiaries payment, description   The first $1.0 million of earn-out payments will be paid in shares of our common stock and all other earn-out payments will be comprised of 60% cash and 40% shares of our common stock.                              
Merger subsidiaries, description   In the event that we do not make all of the required earn-out payments to the Nuelle stockholders before May 3, 2022, and we also close a divestiture before May 3, 2022 of any of the products acquired in the transaction, we will pay the Nuelle stockholders a combination of (i) cash in an amount equal to 10% of the value of all cash, securities and other property paid to us in the divestiture (cash is to be 60% of the total consideration), and (ii) shares of our common stock equal to the Nuelle stockholders' portion of the divestiture payment divided by the average closing price of our common stock for the 10 trading days prior to the earlier of the closing date of the divestiture or the public disclosure of the divestiture (shares of common stock are to be 40% of the total consideration).                              
Percentage of net revenue (Aytu Women's Health)                   25.00%              
Nuelle [Member] | First Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   $ 1,000,000                              
Sales revenue target   10,000,000                              
Nuelle [Member] | Second Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   1,800,000                              
Sales revenue target   17,500,000                              
Nuelle [Member] | Third Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   2,500,000                              
Sales revenue target   25,000,000                              
Nuelle [Member] | Forth Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   3,800,000                              
Sales revenue target   37,500,000                              
Nuelle [Member] | Fifth Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   5,000,000                              
Sales revenue target   50,000,000                              
Nuelle [Member] | Sixth Milestone [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
One-time, non-refundable payments   10,000,000                              
Sales revenue target   $ 100,000,000                              
Nuelle [Member] | Maximum [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets amortized period   12 years                              
Nuelle [Member] | Minimum [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets amortized period   9 years                              
Nuelle [Member] | Developed technology [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets, trade names   $ 1,300,000                              
Nuelle [Member] | Trade names [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets, trade names   160,000                              
Nuelle [Member] | Customer contracts [Member]                                  
Business, Basis of Presentation, Business Combinations, Divestitures, License/supply agreement and Merger (Textual)                                  
Intangible assets, trade names   $ 80,000