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Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items] |  |  |
Restricted cash | $ 0 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | $ 700,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |
Goodwill impairments | 0 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss
Intangible assets impairments | 0 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 0 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 0 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Revenue recognition, multiple-deliverable arrangements, years | one to six years |  |
Advertising costs | 1,200,000 us-gaap_AdvertisingExpense | 1,500,000 us-gaap_AdvertisingExpense | 1,100,000 us-gaap_AdvertisingExpense
Foreign currency transaction losses | (2,000,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | (100,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | (200,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Fair value of long-term debt | 367,300,000 us-gaap_LongTermDebtFairValue |  |
Carrying value of long-term debt | 350,000,000 us-gaap_SecuredLongTermDebt | 150,359,000 us-gaap_SecuredLongTermDebt |
Fair value of notes receivable |  | $ 5,100,000 us-gaap_NotesReceivableFairValueDisclosure |
Percentage of Revenue From Henry Schein [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of IDEXX consolidated total | 8.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromHenryScheinMember | 9.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromHenryScheinMember | 9.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromHenryScheinMember
Percentage of Accounts Receivable From Henry Schein [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of IDEXX consolidated total | 2.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfAccountsReceivableFromHenryScheinMember | 7.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfAccountsReceivableFromHenryScheinMember |
Percentage of Revenue From MWI Veterinary Supply [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of IDEXX consolidated total | 8.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromMwiVeterinarySupplyMember | 8.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromMwiVeterinarySupplyMember | 8.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfRevenueFromMwiVeterinarySupplyMember
Percentage of Accounts Receivable From MWI Veterinary Supply [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of IDEXX consolidated total | 8.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfAccountsReceivableFromMwiVeterinarySupplyMember | 11.00%us-gaap_ConcentrationRiskPercentage1 / idxx_RevenuePercentageByCustomerAxis = idxx_PercentageOfAccountsReceivableFromMwiVeterinarySupplyMember |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Disclosure of accounting policy for revenue recognition for multiple-deliverable arrangements including, at a minimum (as applicable): (1) the nature of such arrangements, (2) the significant deliverables within the arrangements, (3) the general timing of delivery or performance of service for the deliverables within the arrangements, (4) performance-, cancellation-, termination- or refund-type provisions, (5) a discussion of the significant factors, inputs, assumptions, and methods used to determine selling price (whether vendor-specific objective evidence, third-party evidence, or estimated selling price) for the significant deliverables, (6) whether the significant deliverables in the arrangements qualify as separate units of accounting and the reasons that they do not qualify as separate units of accounting, if applicable, and (7) the general timing of revenue recognition for significant units of accounting. This element is applicable to all multiple-deliverable arrangements, including software arrangements (for example, software products, upgrades or enhancements, postcontract customer support, or services). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.B.Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 25 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=19771336&loc=SL6750900-111635 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=19771336&loc=d3e50766-111635 + Details
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- Definition Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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