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Long-Term Obligations (Details 2) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Series A Convertible Redeemable Preferred Stock  
Temporary Equity [Line Items]  
Number of shares issued 4,207,987bpmx_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Share Price $ 1.85us-gaap_SharePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Warrant | Series A Warrant  
Temporary Equity [Line Items]  
Warrants to purchase shares 2,042,583us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= bpmx_CommonStockWarrantIssuedInConnectionWithIssuanceOfConvertibleRedeemablePreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
Warrants exercise price $ 3.70us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= bpmx_CommonStockWarrantIssuedInConnectionWithIssuanceOfConvertibleRedeemablePreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
Private Placement | Series A Warrant  
Temporary Equity [Line Items]  
Warrants to purchase shares 2,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= bpmx_CommonStockWarrantIssuedInConnectionWithIssuanceOfConvertibleRedeemablePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Warrants exercise price $ 3.70us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= bpmx_CommonStockWarrantIssuedInConnectionWithIssuanceOfConvertibleRedeemablePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Private Placement | Series A Convertible Redeemable Preferred Stock  
Temporary Equity [Line Items]  
Number of shares issued 4,200,000bpmx_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Share Price $ 1.85us-gaap_SharePrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Proceeds from transactions $ 7.3us-gaap_ProceedsFromIssuanceOfRedeemableConvertiblePreferredStock
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember