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Summary of Net Revenue by Geographic Location (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]    
Net revenue $ 10,855us-gaap_SalesRevenueNet $ 11,518us-gaap_SalesRevenueNet
UNITED STATES    
Segment Reporting Information [Line Items]    
Net revenue 5,930us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US		 6,709us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= country_US
International    
Segment Reporting Information [Line Items]    
Net revenue $ 4,925us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= biol_InternationalMember		 $ 4,809us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= biol_InternationalMember