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Note 6 - Warrants Outstanding (Details) (Parentheticals) - shares	Dec. 31, 2015	Dec. 31, 2014
Warrant Issued for Financing and Stock Subscriptions [Member] | Major Stockholder and Chairman [Member]
Warrants Outstanding (in shares)	300,000	300,000
Warrant Issued for Financing and Stock Subscriptions [Member]
Warrants Outstanding (in shares)	2,100,000	2,100,000
Warrants Outstanding (in shares)	3,403,367	3,153,367

X

- Definition

The total number of warrants of an entity issued.

+ References

No definition available.

+ Details

Name:	atrn_ClassOfWarrantsOrRightsIssued
Namespace Prefix:	atrn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=atrn_WarrantIssuedForFinancingAndStockSubscriptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=atrn_MajorStockholderAndChairmanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: