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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Variable Interest Entity (Details) (Variable Interest Entity, Not Primary Beneficiary, USD $)
In Millions, unless otherwise specified
0 Months Ended
Apr. 19, 2013
Dec. 31, 2014
Variable Interest Entity    
Cash payments from sale of affiliate equity investment $ 8.5us-gaap_EquityMethodInvestmentNetSalesProceeds  
Amount held in escrow pending working capital adjustments 1.1us-gaap_DepositAssets  
Time period after close to receive additional services or cash 2 years  
Prepaid expenses and other current assets
   
Variable Interest Entity    
Receivable for additional services or cash   $ 2.4bios_DuefromSaleofAffiliateEquityInvestment
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