XML 38 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9
PIPE TRANSACTION - Calculation of Carrying Value of Preferred Stock (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Mar. 09, 2015
Temporary Equity [Line Items]      
Issuance date liquidation preference $ 62,952,911us-gaap_TemporaryEquityLiquidationPreference    
Initial carrying value of Series A Preferred Stock 53,998,000us-gaap_TemporaryEquityCarryingAmountAttributableToParent 0us-gaap_TemporaryEquityCarryingAmountAttributableToParent  
Series A Preferred Stock      
Temporary Equity [Line Items]      
Issuance date liquidation preference     62,500,000us-gaap_TemporaryEquityLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
Initial carrying value of Series A Preferred Stock 53,998,000us-gaap_TemporaryEquityCarryingAmountAttributableToParent
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
  52,380,000us-gaap_TemporaryEquityCarryingAmountAttributableToParent
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
Warrant Value | Series A Preferred Stock      
Temporary Equity [Line Items]      
Discount on issuance     (3,145,000)bios_TemporaryEquityDiscountonIssuance
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
/ bios_TemporaryEquityDiscountClassificationAxis
= bios_WarrantValueMember
Beneficial Conversion Feature | Series A Preferred Stock      
Temporary Equity [Line Items]      
Discount on issuance     (3,145,000)bios_TemporaryEquityDiscountonIssuance
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
/ bios_TemporaryEquityDiscountClassificationAxis
= bios_BeneficialConversionFeatureMember
Issuance Costs | Series A Preferred Stock      
Temporary Equity [Line Items]      
Discount on issuance     $ (3,830,000)bios_TemporaryEquityDiscountonIssuance
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember
/ bios_TemporaryEquityDiscountClassificationAxis
= bios_IssuanceCostsMember