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Commitments and Contingencies - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended 1 Months Ended
Sep. 30, 2011
Dec. 31, 2014
Lease
Dec. 31, 2013
Dec. 31, 2012
Jan. 31, 2015
Sale Leaseback Transaction [Line Items]          
Rent expense under operating leases   $ 3,300,000us-gaap_LeaseAndRentalExpense $ 2,300,000us-gaap_LeaseAndRentalExpense $ 2,000,000us-gaap_LeaseAndRentalExpense  
Lease expiration year   2022      
Number of extension   2qdel_NumberOfExtension      
Extend the lease options   5 years      
Lease incentives for tenant improvements   1,700,000us-gaap_IncentiveFromLessor      
Facility sold   15,000,000us-gaap_SaleLeasebackTransactionGrossProceedsFinancingActivities      
Capital contributed   3,800,000qdel_CapitalContributedByCompanySaleAndLeaseBackTransaction      
Cash transaction, netting   7,000,000us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities      
Partnership that acquired the facility   25.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest      
Lease payments   1,100,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments 1,100,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments 1,100,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments  
Purchase commitments   3,400,000us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted      
Accrued in other current liabilities   8,043,000us-gaap_OtherLiabilitiesCurrent 5,611,000us-gaap_OtherLiabilitiesCurrent    
Agreement for payments totaling   29,500,000us-gaap_RoyaltyGuaranteesCommitmentsAmount      
Initial cash payments 13,800,000qdel_InitialCashPayments        
Fixed cash payment 15,700,000qdel_ContractTerminationCharges        
Contract value Discount 1,000,000qdel_ContractValueDiscount        
One-time charge to cost of sales   700,000qdel_FairValueToCostOfSales      
Amortization expense   17,400,000us-gaap_AmortizationOfIntangibleAssets 16,600,000us-gaap_AmortizationOfIntangibleAssets 15,400,000us-gaap_AmortizationOfIntangibleAssets  
Company had royalty and license expenses relating to those agreements   900,000qdel_RoyaltyAndLicenseExpense 1,000,000qdel_RoyaltyAndLicenseExpense 1,400,000qdel_RoyaltyAndLicenseExpense  
San Diego [Member]          
Sale Leaseback Transaction [Line Items]          
Lease term period   Dec. 01, 2019      
Number of extension   3qdel_NumberOfExtension
/ us-gaap_StatementGeographicalAxis
= qdel_SanDiegoMember		      
Extend the lease options   5 years      
Amended terms   10 years      
Property Subject to Operating Lease [Member]          
Sale Leaseback Transaction [Line Items]          
Area under new operating lease     30,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= us-gaap_PropertySubjectToOperatingLeaseMember		    
Patented technology [Member]          
Sale Leaseback Transaction [Line Items]          
Assigned licensed technology   28,800,000us-gaap_FiniteLivedIntangibleAssetsFairValueDisclosure
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentedTechnologyMember		      
License agreements [Member]          
Sale Leaseback Transaction [Line Items]          
Amortization expense   8,000,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember		 8,000,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember		 8,000,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember		  
Research and Development Collaboration Agreements [Member]          
Sale Leaseback Transaction [Line Items]          
Current commitments   4,300,000us-gaap_ContractualObligation
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= qdel_ResearchAndDevelopmentCollaborationAgreementsMember		      
Claims and litigation [Member]          
Sale Leaseback Transaction [Line Items]          
Accrued in other current liabilities   300,000us-gaap_OtherLiabilitiesCurrent
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= qdel_ClaimsAndLitigationMember		 300,000us-gaap_OtherLiabilitiesCurrent
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= qdel_ClaimsAndLitigationMember		    
Research and Development Arrangement [Member]          
Sale Leaseback Transaction [Line Items]          
Milestone Payments Made Under Agreement   900,000qdel_MilestonePaymentsMadeUnderAgreement
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_ResearchAndDevelopmentArrangementMember		      
Research and Development Arrangement [Member] | Subsequent Event [Member]          
Sale Leaseback Transaction [Line Items]          
Milestone Payments Made Under Agreement         400,000qdel_MilestonePaymentsMadeUnderAgreement
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_ResearchAndDevelopmentArrangementMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Bio Helix [Member]          
Sale Leaseback Transaction [Line Items]          
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability   800,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_BusinessAcquisitionAxis
= qdel_BioHelixMember		      
Andiatec Acquisition [Member]          
Sale Leaseback Transaction [Line Items]          
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability   $ 100,000us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
/ us-gaap_BusinessAcquisitionAxis
= qdel_AndiatecAcquisitionMember