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CONCENTRATION OF RISK (Details)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Product Concentration Risk    
Concentration Risk [Line Items]    
Percentage of concentration risk 16.00%bios_ConcentrationOfRiskPercentage
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember		 18.00%bios_ConcentrationOfRiskPercentage
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
UnitedHealthcare | Customer Concentration Risk    
Concentration Risk [Line Items]    
Percentage of concentration risk 22.00%bios_ConcentrationOfRiskPercentage
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= bios_UnitedHealthcareMember		 23.00%bios_ConcentrationOfRiskPercentage
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= bios_UnitedHealthcareMember
Medicare | Customer Concentration Risk    
Concentration Risk [Line Items]    
Percentage of concentration risk 10.00%bios_ConcentrationOfRiskPercentage
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= bios_MedicareMember