Annual report pursuant to Section 13 and 15(d)

Lines of Credit and Other Borrowings - Additional Information (Detail)

v2.4.1.9
Lines of Credit and Other Borrowings - Additional Information (Detail) (USD $)
0 Months Ended 12 Months Ended 3 Months Ended
Nov. 07, 2014
Jul. 28, 2014
Jul. 22, 2014
Jun. 03, 2014
May 31, 2014
May 05, 2014
Apr. 10, 2014
Mar. 04, 2014
Feb. 10, 2014
Dec. 31, 2014
Agreement
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2014
May 24, 2012
Nov. 08, 2013
Sep. 06, 2013
Line Of Credit Facility [Line Items]                                
Number revolving credit facility agreements                   2biol_NumberRevolvingCreditFacilityAgreements            
Payments under credit agreements   $ 2,900,000us-gaap_RepaymentsOfLinesOfCredit               $ 21,508,000us-gaap_RepaymentsOfLinesOfCredit $ 32,104,000us-gaap_RepaymentsOfLinesOfCredit $ 14,963,000us-gaap_RepaymentsOfLinesOfCredit        
Credit agreements amendment fee             10,000biol_AmendmentsAndAdministrativeFees 10,000biol_AmendmentsAndAdministrativeFees                
Lines of credit maximum borrowing capacity             4,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity 5,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity           8,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Line of credit facility, expiration date       Aug. 01, 2014 Aug. 01, 2014 Jun. 01, 2014       May 01, 2014            
Revolving lines of credit fee paid       15,000biol_LineOfCreditNonCompliancePayments 10,000biol_LineOfCreditNonCompliancePayments 10,000biol_LineOfCreditNonCompliancePayments                    
Increase decrease in interest rate of lines of credit facility       0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease                        
Outstanding borrowings under lines of credit                     4,600,000us-gaap_LineOfCredit          
Prime Floor, daily prime plus LIBOR                   2.50%biol_PrimeFloor 2.50%biol_PrimeFloor          
Unused capacity commitment fee percentage                   0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage          
Interest expense incurred for lines of credit and loan and security agreement                   457,000us-gaap_InterestExpenseBorrowings 599,000us-gaap_InterestExpenseBorrowings          
Amortization of deferred debt issuance costs                   128,000us-gaap_AmortizationOfFinancingCosts 197,000us-gaap_AmortizationOfFinancingCosts 91,000us-gaap_AmortizationOfFinancingCosts        
Amortization of discount on lines of credit                   200,000us-gaap_AmortizationOfDebtDiscountPremium 179,000us-gaap_AmortizationOfDebtDiscountPremium 43,000us-gaap_AmortizationOfDebtDiscountPremium        
Accrued Interest Payable                   0us-gaap_InterestPayableCurrentAndNoncurrent 20,000us-gaap_InterestPayableCurrentAndNoncurrent          
Restricted cash amounts                   0us-gaap_RestrictedCashAndCashEquivalents 0us-gaap_RestrictedCashAndCashEquivalents          
Additional commitment fees and legal costs incurred                   55,000biol_AdditionalCommitmentFeesAndLegalCostsIncurred 67,000biol_AdditionalCommitmentFeesAndLegalCostsIncurred          
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1                              
Issuance of stock, net, shares 14,162,873us-gaap_StockIssuedDuringPeriodSharesNewIssues   6,250,000us-gaap_StockIssuedDuringPeriodSharesNewIssues           1,945,525us-gaap_StockIssuedDuringPeriodSharesNewIssues              
Financed insurance premium                     0biol_FinancedInsurancePremiumPayable 197,000biol_FinancedInsurancePremiumPayable        
Number of monthly insurance premium installments payable in 2013                   Nine            
Interest Expense incurred for financed insurance premiums                   3,000us-gaap_InterestExpenseRelatedParty 5,000us-gaap_InterestExpenseRelatedParty 5,000us-gaap_InterestExpenseRelatedParty        
Financial insurance premiums interest rate                     2.90%biol_FinancedInsurancePremiumFinanceCharge          
Domestic Revolver Credit Facility                                
Line Of Credit Facility [Line Items]                                
Lines of credit maximum borrowing capacity                           4,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_DomesticLineOfCreditMember
   
Outstanding borrowings under lines of credit                     1,800,000us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_DomesticLineOfCreditMember
         
Domestic Revolver Credit Facility | Prime Rate                                
Line Of Credit Facility [Line Items]                                
Interest on principal balance rate plus                   2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_DomesticLineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_DomesticLineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
         
Ex-Im Revolver                                
Line Of Credit Facility [Line Items]                                
Lines of credit maximum borrowing capacity                           4,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= biol_ExImRevolverMember
   
Outstanding borrowings under lines of credit                     2,800,000us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= biol_ExImRevolverMember
         
Ex-Im Revolver | Prime Rate                                
Line Of Credit Facility [Line Items]                                
Interest on principal balance rate plus                   2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= biol_ExImRevolverMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= biol_ExImRevolverMember
/ us-gaap_VariableRateAxis
= us-gaap_PrimeRateMember
         
November 2013 Comerica Warrant                                
Line Of Credit Facility [Line Items]                                
Warrants issued to purchase common stock                             100,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
 
Class of Warrant or Right, Exercise Price of Warrants or Rights                             $ 2.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
 
Expiration date of warrant shares if unexercised                     Nov. 08, 2018          
Fair value warrants expected term                     5 years          
Fair value warrants volatility rate                     102.65%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
         
Fair value warrants dividend per share                     $ 0.00us-gaap_FairValueAssumptionsExpectedDividendPayments
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
         
Fair value warrants risk free interest rate                     1.42%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
         
Fair value of warrants                     137,000biol_FairValueOfWarrants
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
         
Number of Comerica Bank warrants exercised                         100,000biol_NumberOfWarrantsExercised
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
     
Issuance of stock, net, shares                         19,354us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CreditFacilityAxis
= biol_NovemberTwoZeroOneThreeComericaWarrantMember
     
September 2013 Comerica Warrant                                
Line Of Credit Facility [Line Items]                                
Warrants issued to purchase common stock                               100,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
Class of Warrant or Right, Exercise Price of Warrants or Rights                               $ 2.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
Fair value warrants expected term                     5 years          
Fair value warrants volatility rate                     105.32%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
         
Fair value warrants dividend per share                     $ 0.00us-gaap_FairValueAssumptionsExpectedDividendPayments
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
         
Fair value warrants risk free interest rate                     1.77%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
         
Fair value of warrants                     143,000biol_FairValueOfWarrants
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
         
Number of Comerica Bank warrants exercised                         100,000biol_NumberOfWarrantsExercised
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
     
Issuance of stock, net, shares                         19,354us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CreditFacilityAxis
= biol_SeptemberTwoZeroOneThreeComericaWarrantMember
     
2012 Comerica Warrant                                
Line Of Credit Facility [Line Items]                                
Warrants issued to purchase common stock                       80,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember
       
Class of Warrant or Right, Exercise Price of Warrants or Rights                       $ 2.83us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember
       
Expiration date of warrant shares if unexercised                       May 24, 2017        
Fair value of warrants                       $ 142,000biol_FairValueOfWarrants
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember
       
Number of Comerica Bank warrants exercised                       80,000biol_NumberOfWarrantsExercised
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember
       
Reduced exercise price of warrants                       $ 2.00biol_ExercisePriceOfWarrantsReduced
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember
       
Net issuance of common stock due to exercise of warrants                       40,465biol_StockIssuedDueToWarrantExercise
/ us-gaap_CreditFacilityAxis
= biol_TwoZeroOneTwoComericaWarrantMember