XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Note 6 - Derivative Liabilities (Details Textual) - $ / shares | Feb. 12, 2016 | Apr. 15, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  | $ 1
Private Placement [Member] | Placement Agent Warrants [Member] |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 1.25 |
Private Placement [Member] | Series B Preferred Stock [Member] |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 1.25 |  |
Class of Warrant or Right, Expiration Period | 5 years |  |
Private Placement [Member] | Series B Preferred Stock [Member] | Strategic Bio Partners [Member] |  |  |
Class of Warrant or Right, Issued During Period | 295,945 |  |
Private Placement [Member] | Series B Preferred Stock [Member] | Placement Agent Warrants [Member] |  |  |
Class of Warrant or Right, Issued During Period | 127,346 |  |

X
- Definition Expiration period of warrants or rights. + References No definition available. + Details
Name: | atrn_ClassOfWarrantOrRightExpirationPeriod
Namespace Prefix: | atrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of warrants or rights issued during period. + References No definition available. + Details
Name: | atrn_ClassOfWarrantOrRightIssuedDuringPeriod
Namespace Prefix: | atrn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=atrn_PlacementAgentWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesBPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=atrn_StrategicBioPartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |