Annual report pursuant to Section 13 and 15(d)

Company information and history (Details Textual)

v2.4.1.9
Company information and history (Details Textual)
 1 Months Ended 2 Months Ended
May 31, 2013
Aug. 31, 2013
Company Information And History [Line Items]    
Stock Issued During Period, Shares, New Issues 7,500,000us-gaap_StockIssuedDuringPeriodSharesNewIssues  
Warrants Issued For Purchase Of Common Stock 3,750,000mtnb_WarrantsIssuedForPurchaseOfCommonStock  
Private Placement [Member]    
Company Information And History [Line Items]    
Stock Issued During Period, Shares, New Issues   15,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember 		[1]
Warrants Issued For Purchase Of Common Stock   7,500,000mtnb_WarrantsIssuedForPurchaseOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Holdings [Member]    
Company Information And History [Line Items]    
Stock Issued During Period, Shares, New Issues   9,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtnb_HoldingsMember
Warrants Issued For Purchase Of Common Stock   1,000,000mtnb_WarrantsIssuedForPurchaseOfCommonStock
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtnb_HoldingsMember
[1] From the 2013 Private Placement, and includes 1 unit purchased by Mr. Conrad for $ 250,000 at the full price paid by all third party investors.