10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION 

WASHINGTON, D.C. 20549 

FORM 10-Q 

(Mark One) 

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the quarterly period ended June 30, 2021

OR 

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the transition period from _______________ to _______________. 

COMMISSION FILE NUMBER: 000-19271 

  IDEXX LABORATORIES, INC. 

(Exact name of registrant as specified in its charter) 

Delaware			01-0393723
(State or other jurisdiction of incorporation  or organization)			(IRS Employer Identification No.)
One IDEXX Drive	Westbrook	Maine	04092
(Address of principal executive offices)			(ZIP Code)

207-556-0300

(Registrant’s telephone number, including area code)

Securities Registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.10 par value per share	IDXX	NASDAQ Global Select Market

    Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No ¨

    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ý No  ¨

    Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. 

Large Accelerated Filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. The number of shares outstanding of the registrant’s Common Stock, $0.10 par value per share, was 85,075,932, on July 26, 2021.

GLOSSARY OF TERMS AND SELECTED ABBREVIATIONS

    In order to aid the reader, we have included certain terms and abbreviations used throughout this Quarterly Report on Form 10-Q below:

Term/ Abbreviation	Definition
AOCI	Accumulated other comprehensive income or loss
CAG	Companion Animal Group, a reporting segment that provides veterinarians diagnostic products and services and information management solutions that enhance the health and well-being of pets.
Credit Facility	Our $1 billion unsecured revolving credit facility, also referred to as line of credit.
Clinical visits	The reason for the visit involves an interaction between a clinician and a pet, including wellness and non-wellness visit types.
FASB	U.S. Financial Accounting Standards Board
LPD	Livestock, Poultry and Dairy, a reporting segment that provides diagnostic products and services for livestock and poultry health and to ensure the quality and safety of milk and improve producer efficiency.
Non-wellness visits	Patient visits where the reason for the visit is sickness, procedure, or monitoring.
OPTI Medical	OPTI Medical Systems, Inc., a wholly-owned subsidiary of IDEXX Laboratories Inc., located in Roswell, Georgia. This business provides point-of-care and laboratory diagnostics (including electrolyte and blood gas analyzers and related consumable products) for the human medical diagnostics market, as well as COVID-19 testing products and services. The Roswell facility also manufactures electrolytes slides (instrument consumables) to run Catalyst One®, Catalyst Dx®, and blood gas analyzers and consumables for the veterinary market; also referred to as OPTI.
Organic revenue growth	A non-GAAP financial measure and represents the percentage change in revenue, as compared to the same period for the prior year, net of the effect of changes in foreign currency exchange rates, certain business acquisitions and divestitures. Organic revenue growth should be considered in addition to, and not as a replacement for or as a superior measure to, revenue growth reported in accordance with U.S. GAAP, and may not be comparable to similarly titled measures reported by other companies.
PCR	Polymerase chain reaction, a technique used to amplify small segments of DNA
R&D	Research and Development
Reported revenue growth	Represents the percentage change in revenue reported in accordance with U.S. GAAP, as compared to the same period in the prior year.
SaaS	Software-as-a-service
SEC	U.S. Securities and Exchange Commission
Senior Note Agreements	Note purchase agreements for the private placement of senior notes, referred to as senior notes or long-term debt.
U.S. GAAP	Accounting principles generally accepted in the United States of America
Water	Water, a reporting segment that provides water microbiology testing products.
Wellness visits	Patient visits where the reason for the visit is an annual exam, vaccination, or routine check-up.

IDEXX LABORATORIES, INC. 

Quarterly Report on Form 10-Q 

Table of Contents 

Item No.		Page
	PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Condensed Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020	3
	Condensed Consolidated Statements of Income for the Three and Six Months Ended June 30, 2021 and 2020	4
	Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2021 and 2020	5
	Condensed Consolidated Statements of Stockholders' Equity for the Three and Six Months Ended June 30, 2021 and 2020	6
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2021 and 2020	7
	Notes to Condensed Consolidated Financial Statements (Unaudited)	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	51
Item 4.	Controls and Procedures	53
	PART II—OTHER INFORMATION
Item 1.	Legal Proceedings	53
Item 1A.	Risk Factors	53
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	54
Item 6.	Exhibits	55
Signatures		56

PART I— FINANCIAL INFORMATION 

Item 1.  Financial Statements.  

IDEXX LABORATORIES, INC. AND SUBSIDIARIES 

CONDENSED CONSOLIDATED BALANCE SHEETS 

(in thousands, except per share amounts) 

(Unaudited)

	June 30, 2021		December 31, 2020
ASSETS
Current Assets:
Cash and cash equivalents	$	232,134	$	383,928
Accounts receivable, net	382,308		331,429
Inventories	241,392		209,873
Other current assets	145,392		137,508
Total current assets	1,001,226		1,062,738
Long-Term Assets:
Property and equipment, net	550,255		555,167
Operating lease right-of-use assets	104,723		91,171
Goodwill	353,842		243,347
Intangible assets, net	96,757		52,543
Other long-term assets	305,346		289,595
Total long-term assets	1,410,923		1,231,823
TOTAL ASSETS	$	2,412,149	$	2,294,561
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Accounts payable	$	93,016	$	74,558
Accrued liabilities	392,681		415,648
Current portion of long-term debt	124,982		49,988
Current portion of deferred revenue	41,130		42,567
Total current liabilities	651,809		582,761
Long-Term Liabilities:
Deferred income tax liabilities	15,469		11,707
Long-term debt, net of current portion	780,079		858,492
Long-term deferred revenue, net of current portion	43,196		46,163
Long-term operating lease liabilities	88,330		77,039
Other long-term liabilities	85,043		85,604
Total long-term liabilities	1,012,117		1,079,005
Total liabilities	1,663,926		1,661,766
Commitments and Contingencies (Note 15)
Stockholders’ Equity:
Common stock, $0.10 par value: Authorized: 120,000 shares; Issued:106,748 shares in 2021 and 106,457 shares in 2020; Outstanding: 85,096 shares in 2021 and 85,449 shares in 2020	10,675		10,646
Additional paid-in capital	1,339,413		1,294,849
Deferred stock units: Outstanding: 90 units in 2021 and 87 units in 2020	5,630		4,503
Retained earnings	2,582,434		2,175,595
Accumulated other comprehensive loss	(48,391)		(53,615)
Treasury stock, at cost: 21,653 shares in 2021 and 21,008 shares in 2020	(3,142,301)		(2,799,890)
Total IDEXX Laboratories, Inc. stockholders’ equity	747,460		632,088
Noncontrolling interest	763		707
Total stockholders’ equity	748,223		632,795
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	2,412,149	$	2,294,561
The accompanying notes are an integral part of these condensed consolidated financial statements.

3

IDEXX LABORATORIES, INC. AND SUBSIDIARIES 

CONDENSED CONSOLIDATED STATEMENTS OF INCOME 

(in thousands, except per share amounts) 

(Unaudited)  

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Revenue:
Product revenue	$	480,715	$	366,058	$	935,063	$	730,831
Service revenue	345,427		271,534		668,786		533,097
Total revenue	826,142		637,592		1,603,849		1,263,928
Cost of Revenue:
Cost of product revenue	169,832		124,024		317,102		249,478
Cost of service revenue	167,002		134,226		326,657		275,518
Total cost of revenue	336,834		258,250		643,759		524,996
Gross profit	489,308		379,342		960,090		738,932
Expenses:
Sales and marketing	119,032		94,181		233,843		210,324
General and administrative	73,326		60,268		144,096		126,080
Research and development	37,697		31,645		75,276		64,955
Income from operations	259,253		193,248		506,875		337,573
Interest expense	(7,613)		(9,495)		(15,197)		(17,187)
Interest income	91		69		143		209
Income before provision for income taxes	251,731		183,822		491,821		320,595
Provision for income taxes	49,125		34,826		84,926		59,743
Net income	202,606		148,996		406,895		260,852
Less: Net income attributable to noncontrolling interest	24		56		56		85
Net income attributable to IDEXX Laboratories, Inc. stockholders	$	202,582	$	148,940	$	406,839	$	260,767
Earnings per Share:
Basic	$	2.37	$	1.75	$	4.76	$	3.06
Diluted	$	2.34	$	1.72	$	4.69	$	3.01
Weighted Average Shares Outstanding:
Basic	85,325		85,134		85,427		85,282
Diluted	86,654		86,402		86,794		86,568
The accompanying notes are an integral part of these condensed consolidated financial statements.

4

IDEXX LABORATORIES, INC. AND SUBSIDIARIES 

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 

(in thousands) 

(Unaudited) 

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Net income	$	202,606	$	148,996	$	406,895	$	260,852
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	12,087		7,006		(7,246)		(15,200)
Unrealized gain (loss) on Euro-denominated notes, net of tax expense (benefit) of $(313) and $837 in 2021 and $(532) and $(202) in 2020	(994)		(1,689)		2,654		(642)
Unrealized gain (loss) on investments, net of tax expense (benefit) of $2 and $48 in 2021 and $(93) and $(181) in 2020	7		(295)		154		(574)
Unrealized gain (loss) on derivative instruments:
Unrealized gain (loss) on foreign currency exchange contracts, net of tax expense (benefit) of $(594) and $655 in 2021 and $(805) and $1,247 in 2020	(1,224)		(3,888)		3,191		5,538
Unrealized gain (loss) on cross currency swaps, net of tax expense (benefit) of $(349) and $694 in 2021 and $(283) and $586 in 2020	(1,106)		(1,447)		2,202		2,602
Reclassification adjustment for loss (gain) included in net income, net of tax benefit (expense) of $340 and $876 in 2021 and $(339) and $(579) in 2020	2,375		(1,473)		4,269		(2,574)
Unrealized gain (loss) on derivative instruments	45		(6,808)		9,662		5,566
Other comprehensive gain (loss), net of tax	11,145		(1,786)		5,224		(10,850)
Comprehensive income	213,751		147,210		412,119		250,002
Less: Comprehensive income attributable to noncontrolling interest	24		56		56		85
Comprehensive income attributable to IDEXX Laboratories, Inc.	$	213,727	$	147,154	$	412,063	$	249,917
The accompanying notes are an integral part of these condensed consolidated financial statements.

5

IDEXX LABORATORIES, INC.  AND SUBSIDIARIES 

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands, except per share amounts) 

(Unaudited)  

	Common Stock
	Number of Shares	$0.10 Par Value		Additional Paid-in Capital		Deferred Stock Units		Retained Earnings		Accumulated Other Comprehensive (Loss) Income		Treasury Stock		Noncontrolling Interest		Total Stockholders’ Equity
Balance December 31, 2020	106,457	$	10,646	$	1,294,849	$	4,503	$	2,175,595	$	(53,615)	$	(2,799,890)	$	707	$	632,795
Net income	—	—		—		—		204,257		—		—		32		204,289
Other comprehensive loss, net	—	—		—		—		—		(5,921)		—		—		(5,921)
Repurchases of common stock, net	—	—		—		—		—		—		(154,033)		—		(154,033)
Common stock issued under stock plans	219	22		17,408		—		—		—		—		—		17,430
Share-based compensation cost	—	—		8,829		46		—		—		—		—		8,875
Balance March 31, 2021	106,676	$	10,668	$	1,321,086	$	4,549	$	2,379,852	$	(59,536)	$	(2,953,923)	$	739	$	703,435
Net income	—	—		—		—		202,582		—		—		24		202,606
Other comprehensive income (loss), net	—	—		—		—		—		11,145		—		—		11,145
Repurchases of common stock	—	—		—		—		—		—		(188,378)		—		(188,378)
Common stock issued under stock plans, including excess tax benefit	72	7		9,771		—		—		—		—		—		9,778
Deferred stock units activity	—	—		(1,035)		1,035		—		—		—		—		—
Share-based compensation cost	—	—		9,591		46		—		—		—		—		9,637
Balance June 30, 2021	106,748	$	10,675	$	1,339,413	$	5,630	$	2,582,434	$	(48,391)	$	(3,142,301)	$	763	$	748,223

Balance December 31, 2019	105,711	$	10,571	$	1,213,517	$	4,462	$	1,595,648	$	(46,182)	$	(2,600,543)	$	352	$	177,825
Cumulative effect of accounting changes	—	—		—		—		(1,829)		—		—		—		(1,829)
Net income	—	—		—		—		111,827		—		—		29		111,856
Other comprehensive loss, net	—	—		—		—		—		(9,064)		—		—		(9,064)
Repurchases of common stock	—	—		—		—		—		—		(187,767)		—		(187,767)
Common stock issued under stock plans	203	20		9,730		—		—		—		—		—		9,750
Share-based compensation cost	—	—		7,238		46		—		—		—		—		7,284
Balance March 31, 2020	105,914	$	10,591	$	1,230,485	$	4,508	$	1,705,646	$	(55,246)	$	(2,788,310)	$	381	$	108,055
Net income	—	—		—		—		148,940		—		—		56		148,996
Other comprehensive loss, net	—	—		—		—		—		(1,786)		—		—		(1,786)
Issuance of common stock	—	—		—		—		—		—		258		—		258
Common stock issued under stock plans, including excess tax benefit	117	12		10,068		—		—		—		—		—		10,080
Deferred stock units activity	—	—		(894)		894		—		—		—		—		—
Share-based compensation cost	—	—		7,797		—		—		—		—		—		7,797
Balance June 30, 2020	106,031	$	10,603	$	1,247,456	$	5,402	$	1,854,586	$	(57,032)	$	(2,788,052)	$	437	$	273,400
The accompanying notes are an integral part of these condensed consolidated financial statements.

6

IDEXX LABORATORIES, INC.  AND SUBSIDIARIES 

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands) 

(Unaudited) 

	For the Six Months Ended June 30,
	2021		2020
Cash Flows from Operating Activities:
Net income	$	406,895	$	260,852
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,434		46,786
Impairment charge	3,795		—
Provision for credit losses	768		5,352
Deferred income taxes	4,193		2,658
Share-based compensation expense	18,512		15,081
Other	1,300		699
Changes in assets and liabilities:
Accounts receivable	(50,721)		(57,277)
Inventories	(20,412)		(29,254)
Other assets and liabilities	(55,162)		4,540
Accounts payable	3,812		(6,729)
Deferred revenue	(5,037)		(6,695)
Net cash provided by operating activities	358,377		236,013
Cash Flows from Investing Activities:
Purchases of property and equipment	(42,744)		(73,558)
Acquisition of intangible assets and equity investment	—		(668)
Acquisitions of a business, net of cash acquired	(156,506)		—
Net cash used by investing activities	(199,250)		(74,226)
Cash Flows from Financing Activities:
Repayments on revolving credit facilities, net	—		(167,692)
Issuance of senior debt	—		200,000
Debt issuance costs	—		(4,988)
Payments of acquisition-related contingent considerations and holdbacks	(1,500)		(1,080)
Repurchases of common stock, net	(320,787)		(182,815)
Proceeds from exercises of stock options and employee stock purchase plans	27,371		20,613
Shares withheld for statutory tax withholding on restricted stock	(14,952)		(8,668)
Net cash used by financing activities	(309,868)		(144,630)
Net effect of changes in exchange rates on cash	(1,053)		(2,190)
Net (decrease) increase in cash and cash equivalents	(151,794)		14,967
Cash and cash equivalents at beginning of period	383,928		90,326
Cash and cash equivalents at end of period	$	232,134	$	105,293
Supplemental Cash Flow Information:
Cash paid for income taxes	$	81,923	$	29,983
Unpaid property and equipment, reflected in accounts payable and accrued liabilities	$	9,676	$	12,670
The accompanying notes are an integral part of these condensed consolidated financial statements.

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IDEXX LABORATORIES, INC. AND SUBSIDIARIES 

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS 

(Unaudited)

NOTE 1. BASIS OF PRESENTATION AND PRINCIPLES OF CONSOLIDATION 

The accompanying unaudited condensed consolidated financial statements of IDEXX Laboratories, Inc. and its subsidiaries have been prepared in accordance with U.S. GAAP for interim financial information and with the requirements of Regulation S-X, Rule 10-01 for financial statements required to be filed as a part of this Quarterly Report on Form 10-Q. Unless the context requires otherwise, references in this Quarterly Report on Form 10-Q to “IDEXX,” the “Company,” “we,” “our,” or “us” refer to IDEXX Laboratories, Inc. and its subsidiaries.

The accompanying unaudited condensed consolidated financial statements include the accounts of IDEXX Laboratories, Inc. and our wholly-owned and majority-owned subsidiaries. We do not have any variable interest entities for which we are the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation.

The accompanying unaudited condensed consolidated financial statements reflect, in the opinion of our management, all adjustments necessary for a fair statement of our financial position and results of operations. All such adjustments are of a recurring nature. The consolidated balance sheet data at December 31, 2020, was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. The results of operations for the three and six months ended June 30, 2021, are not necessarily indicative of the results to be expected for the full year or any future period. These unaudited condensed consolidated financial statements should be read in conjunction with this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, and our Annual Report on Form 10-K for the year ended December 31, 2020, (the “2020 Annual Report”) filed with the SEC.

The preparation of our condensed consolidated financial statements requires us to make estimates, judgments, and assumptions that may affect the reported amounts of assets, liabilities, equity, revenues, and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis we evaluate our estimates, judgments, and methodologies. We base our estimates on historical experience and on various other assumptions that we believe are reasonable, the results of which form the basis for making judgments about the carrying values of assets, liabilities and equity, and the amount of revenues and expenses.

We have included certain terms and abbreviations used throughout this Quarterly Report on Form 10-Q in the “Glossary of Terms and Selected Abbreviations.”

NOTE 2. ACCOUNTING POLICIES  

Significant Accounting Policies

The significant accounting policies used in preparation of these unaudited condensed consolidated financial statements as of and for the three and six months ended June 30, 2021, are consistent with those discussed in Note 2. Summary of Significant Accounting Policies to the consolidated financial statements in our 2020 Annual Report, except as noted below.

New Accounting Pronouncements Adopted

Effective January 1, 2021, we adopted ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” The new guidance is intended to simplify the accounting for income taxes by removing certain exceptions and by updating accounting requirements around goodwill recognized for tax purposes and the allocation of current and deferred tax expense among legal entities, among other minor changes. The adoption of ASU 2019-12 did not have a material impact on our consolidated financial statements.

New Accounting Pronouncements Not Yet Adopted

In July 2021, the FASB issued ASU 2021-05, “Leases (Topic 842); Lessors - Certain Leases with Variable Lease Payments.” ASU 2021-05 requires a lessor to classify a lease with variable payments that do not depend on an index or rate as an operating lease if another lease classification (i.e., sales-type or direct financing) would result in recognition of a day-one loss. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, and earlier adoption is permitted. We have elected to adopt this

8

standard as of July 1, 2021, on a prospective basis. We do not expect the adoption of ASU 2021-05 to have a material impact on our consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU 2020-04 is intended to provide optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The relief offered by this guidance, if adopted, is available to companies for the period March 12, 2020 through December 31, 2022. We do not expect the discontinuation of LIBOR to have a material impact on our consolidated financial statements.

NOTE 3. REVENUE RECOGNITION

Our revenue is recognized when, or as, performance obligations under the terms of a contract are satisfied, which occurs when control of the promised products or services is transferred to a customer. We exclude sales, use, value-added, and other taxes we collect on behalf of third parties from revenue. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products or services to a customer. To accurately present the consideration received in exchange for promised products or services, we apply the five-step model outlined below:

1.Identification of a contract or agreement with a customer

2.Identification of our performance obligations in the contract or agreement

3.Determination of the transaction price

4.Allocation of the transaction price to the performance obligations

5.Recognition of revenue when, or as, we satisfy a performance obligation        

We enter into contracts that can include various combinations of products and services, which are generally capable of being distinct and accounted for as separate performance obligations. The timing of revenue recognition, billings, and cash collections results in accounts receivable, contract assets and lease receivables as a result of revenue recognized in advance of billings (included within other assets), and contract liabilities or deferred revenue as a result of receiving consideration in advance of revenue recognition within our unaudited condensed consolidated balance sheet. Our general payment terms range from 30 to 60 days, with exceptions in certain geographies. Below is a listing of our major categories of revenue for our products and services:

Diagnostic Products and Accessories. Diagnostic products and accessories revenues, including IDEXX VetLab® consumables and accessories, rapid assay, LPD, Water, and OPTI testing products, are predominantly recognized and invoiced at the time of shipment, which is when the customer obtains control of the product based on legal title transfer and we have the right to payment. Shipping costs reimbursed by the customer are included in revenue and cost of sales. As a practical expedient, we do not account for shipping activities as a separate performance obligation.

Reference Laboratory Diagnostic and Consulting Services. Reference laboratory revenues are recognized and invoiced when the laboratory diagnostic service is performed.

Instruments, Software and Systems. CAG Diagnostics capital instruments, veterinary software and diagnostic imaging systems revenues are recognized and invoiced when the customer obtains control of the products based on legal title transfer and we have the right to payment, which generally occurs at the time of installation and customer acceptance. Our instruments, software, and systems are often included in one of our significant customer programs, as further described below. For veterinary software systems that include multiple performance obligations, such as perpetual software licenses and computer hardware, we allocate revenue to each performance obligation based on estimates of the price that we would charge the customer for each promised product or service if it were sold on a standalone basis.

Lease Revenue. Revenues from instrument rental agreements and reagent rental programs are recognized either as operating leases on a ratable basis over the term of the agreement or as sales-type leases at the time of installation and customer acceptance. Customers typically pay for the right to use instruments under rental agreements in equal monthly amounts over the term of the rental agreement. Our reagent rental programs provide our customers the right to use our instruments upon entering into agreements to purchase specified amounts of consumables, which are considered embedded leases. For some agreements, the customers are provided with the right to purchase the instrument at the end of the lease term. Lease revenues from these agreements are presented in product revenue on our unaudited condensed consolidated income statement. Lease revenue was approximately $4.7 million and $9.5 million for the three and six months ended June 30, 2021, respectively, as compared to $3.5 million and $7.7 million for the three and six months ended June 30, 2020, respectively, including both operating leases

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and sales-type leases under ASC 842, Leases, for leases entered into after January 1, 2019, and ASC 840, Leases, for leases entered into prior to 2019. See below for revenue recognition under our reagent rental programs.

Extended Warranties and Post-Contract Support. CAG Diagnostics capital instruments and diagnostic imaging systems extended warranties typically provide customers with continued coverage for a period of one to five years beyond the first-year standard warranty. Customers can either pay in full for the extended warranty at the time of instrument or system purchase or can be billed on a quarterly basis over the term of the contract. We recognize revenue associated with extended warranties over time on a ratable basis using a time elapsed measure of performance over the contract term, which approximates the expected timing in which applicable services are performed.

Veterinary software post-contract support provides customers with access to technical support when and as needed through access to call centers and online customer assistance. Post-contract support contracts typically have a term of 12 months and customers are billed for post-contract support in equal quarterly amounts over the term. We recognize revenue for post-contract support services over time on a ratable basis using a time elapsed measure of performance over the contract term, which approximates the expected timing in which applicable services are performed.

On December 31, 2020, our deferred revenue related to extended warranties and post-contract support was $35.1 million, of which approximately $3.1 million and $18.0 million was recognized during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new agreements, our deferred revenue related to extended warranties and post-contract support was $32.2 million at June 30, 2021. We do not disclose information about remaining performance obligations that are part of contracts with an original expected duration of one year or less and do not adjust for the effect of the financing components when the period between customer payment and revenue recognition is one year or less. Deferred revenue related to extended warranties and post-contract support with an original duration of more than one year was $18.5 million at June 30, 2021, of which approximately 27%, 38%, 21%, 9%, and 5% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. Additionally, we have determined these agreements do not include a significant financing component.

SaaS Subscriptions. We offer a variety of veterinary software and diagnostic imaging SaaS subscriptions including IDEXX Neo®, Animana®, Pet Health Network® Pro, Petly® Plans, Web PACS, rVetLink®, Smart Flow™, and ezyVet®. We recognize revenue for our SaaS subscriptions over time on a ratable basis over the contract term, beginning on the date our service is made available to the customer. Our subscription contracts vary in term from monthly to two years. Customers typically pay for our subscription contracts in equal monthly amounts over the term of the agreement. Deferred revenue related to our SaaS subscriptions is not material.

Contracts with Multiple Performance Obligations. We enter into contracts where customers purchase a combination of IDEXX products and services. Determining whether products and services are considered distinct performance obligations that should be accounted for separately requires significant judgment. We determine the transaction price for a contract based on the consideration we expect to receive in exchange for the transferred goods or services. To the extent the transaction price includes variable consideration, such as volume rebates or expected price adjustments, we apply judgment in constraining the estimated variable consideration due to factors that may cause reversal of revenue recognized. We evaluate constraints based on our historical and projected experience with similar customer contracts.

We allocate revenue to each performance obligation in proportion to the relative standalone selling prices and recognize revenue when transfer of the related goods or services has occurred for each obligation. We utilize the observable standalone selling price when available, which represents the price charged for the performance obligation when sold separately. When standalone selling prices for our products or services are not directly observable, we determine the standalone selling prices using relevant information available and apply suitable estimation methods including, but not limited to, the cost plus a margin approach. We recognize revenue as each performance obligation is satisfied, either at a point in time or over time, as described in the revenue categories above. We do not disclose information about remaining performance obligations that are part of contracts with an original expected duration of one year or less.

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The following customer programs represent our most significant customer contracts which contain multiple performance obligations:

Customer Commitment Programs. We offer customer incentives upon entering into multi-year agreements to purchase annual minimum amounts of products and services.

Up-Front Customer Loyalty Programs. Our up-front loyalty programs provide customers with incentives in the form of cash payments or IDEXX Points upon entering into multi-year agreements to purchase annual minimum amounts of future products or services. If a customer breaches its agreement, they are required to refund all or a portion of the up-front cash or IDEXX Points, or make other repayments, remedial actions, or both. Up-front incentives to customers in the form of cash or IDEXX Points are not made in exchange for distinct goods or services and are capitalized as customer acquisition costs within other current and long-term assets, which are subsequently recognized as a reduction to revenue over the term of the customer agreement. If these up-front incentives are subsequently utilized to purchase instruments, we allocate total consideration, including future committed purchases less up-front incentives and estimates of expected price adjustments, based on relative standalone selling prices to identified performance obligations and recognize instrument revenue and cost at the time of installation and customer acceptance. To the extent invoiced instrument revenue exceeds recognized instrument revenue, we record deferred revenue as a contract liability, which is subsequently recognized upon the purchase of future products and services. We have determined these agreements do not include a significant financing component. Differences between estimated and actual customer purchases may impact the amount and timing of revenue recognition.

On December 31, 2020, our capitalized customer acquisition costs were $148.1 million, of which approximately $11.1 million and $22.6 million was recognized as a reduction of revenue during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new up-front customer loyalty payments, net of subsequent recognition, our capitalized customer acquisition costs were $155.3 million at June 30, 2021. We monitor customer purchases over the term of their agreement to assess the realizability of our capitalized customer acquisition costs and review estimates of variable consideration. Impairments, revenue adjustments that relate to performance obligations satisfied in prior periods, and contract modifications during the three and six months ended June 30, 2021, were not material.

Volume Commitment Programs. Our volume commitment programs, such as our IDEXX 360 program, provide customers with a free or discounted instrument or system upon entering into multi-year agreements to purchase annual minimum amounts of products and services. We allocate total consideration, including future committed purchases and expected price adjustments, based on relative standalone selling prices to identified performance obligations and recognize instrument revenue and cost at the time of installation and customer acceptance in advance of billing the customer, which is also when the customer obtains control of the instrument based on legal title transfer. Our right to future consideration related to instrument revenue is recorded as a contract asset within other current and long-term assets. The contract asset is transferred to accounts receivable when customers are billed for future products and services over the term of the contract. We have determined these agreements do not include a significant financing component. Differences between estimated and actual customer purchases may impact the amount and timing of revenue recognition.

On December 31, 2020, our volume commitment contract assets were $115.5 million, of which approximately $6.7 million and $13.6 million was reclassified to accounts receivable when customers were billed for related products and services during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new placements under volume commitment programs, net of subsequent amounts reclassified to accounts receivable, and allowances established for credit losses, our contract assets were $134.7 million at June 30, 2021. We monitor customer purchases over the term of their agreement to assess the realizability of our contract assets and review estimates of variable consideration. Impairments, revenue adjustments that relate to performance obligations satisfied in prior periods, and contract modifications during the three and six months ended June 30, 2021, were not material.

For our up-front customer loyalty and volume commitment programs, we estimate future revenues related to multi-year agreements to be approximately $2.5 billion, of which approximately 13%, 25%, 23%, 18%, and 21% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. These future revenues relate to performance obligations not yet satisfied, for which customers have committed to

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purchase goods and services, net of the expected revenue reductions from customer acquisition costs and expected price adjustments, and as a result, are lower than stated contractual commitments by our customers.

Instrument Rebate Programs. Our instrument rebate programs require an instrument purchase and provide customers the opportunity to earn future rebates based on the volume of products and services they purchase over the term of the program. We account for the customer’s right to earn rebates on future purchases as a separate performance obligation and determine the standalone selling price based on an estimate of rebates the customer will earn over the term of the program. Total consideration allocated to identified performance obligations is limited to goods and services that the customer is presently obligated to purchase and does not include estimates of future purchases that are optional. We allocate total consideration to identified performance obligations, including the customer’s right to earn rebates on future purchases, which is deferred and recognized upon the purchase of future products and services, offsetting future rebates as they are earned.

On December 31, 2020, our deferred revenue related to instrument rebate programs was $39.3 million, of which approximately $3.6 million and $7.5 million was recognized when customers purchased eligible products and services and earned rebates during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new instrument purchases under rebate programs, net of subsequent recognition, our deferred revenue was $35.4 million at June 30, 2021, of which approximately 21%, 31%, 21%, 13%, and 14% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively.

Reagent Rental Programs. Our reagent rental programs provide our customers the right to use our instruments upon entering into multi-year agreements to purchase annual minimum amounts of consumables. These types of agreements include an embedded lease for the right to use our instrument, and we determine the amount of lease revenue allocated to the instrument based on relative standalone selling prices. We evaluate the terms of these embedded leases to determine classification as either a sales-type lease or an operating lease.

Sales-type Reagent Rental Programs. Our reagent rental programs that effectively transfer control of instruments to our customers are classified as sales-type leases, and we recognize instrument revenue and cost in advance of billing the customer, at the time of installation and customer acceptance. Our right to future consideration related to instrument revenue is recorded as a lease receivable within other current and long-term assets, and is transferred to accounts receivable when customers are billed for future products and services over the term of the contract. On December 31, 2020, our lease receivable assets were $11.1 million, of which approximately $0.6 million and $1.1 million was reclassified to accounts receivable when customers were billed for related products and services during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new placements under sales-type reagent rental programs, net of subsequent amounts reclassified to accounts receivable, and allowances established for credit losses, our lease receivable assets were $13.0 million at June 30, 2021. The impacts of discounting and unearned income at June 30, 2021, were not material. Profit and loss recognized at the commencement date and interest income during the three and six months ended June 30, 2021, were not material. We monitor customer purchases over the term of their agreement to assess the realizability of our lease receivable assets. Impairments during the three and six months ended June 30, 2021 were not material.

Operating-type Reagent Rental Programs. Our reagent rental programs that do not effectively transfer control of instruments to our customers are classified as operating leases, and we recognize instrument revenue and costs ratably over the term of the agreement. The cost of the instrument is capitalized within property and equipment. During the three and six months ended June 30, 2021, we transferred instruments of $3.3 million and $5.8 million, respectively, as compared to $1.7 million and $4.1 million for the three and six months ended June 30, 2020, from inventory to property and equipment. We had impairments of $3.8 million for both the three and six months ended June 30, 2021, associated with a write-down of rental assets in certain regions.

We estimate future revenue to be recognized related to our reagent rental programs of approximately $38.4 million, of which approximately 18%, 30%, 23%, 16%, and 13% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. These future revenues relate to performance obligations not yet satisfied for which customers have committed to future purchases, net of any expected price adjustments, and as a result, may be lower than stated contractual commitments by our customers.

Other Customer Incentive Programs. Certain agreements with customers include discounts or rebates on the sale of products and services applied retrospectively, such as volume rebates achieved by purchasing a specified

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purchase threshold of goods and services. We account for these discounts as variable consideration and estimate the likelihood of a customer meeting the threshold in order to determine the transaction price using the most predictive approach. We typically use the most-likely-amount method for incentives that are offered to individual customers and the expected-value method for programs that are offered to a broad group of customers. Revenue adjustments that relate to performance obligations satisfied in prior periods during the three and six months ended June 30, 2021, were not material. Refund obligations related to customer incentive programs are recorded in accrued liabilities for the actual issuance of incentives, incentives earned but not yet issued and estimates of incentives to be earned in the future.

Program Combinations. At times, we combine elements of our significant customer programs within a single customer contract. We separate each significant program element and include the contract assets, customer acquisition costs, deferred revenues and estimated future revenues within the most relevant program disclosures above. Each customer contract is presented as a net contract asset or net contract liability on our unaudited condensed consolidated balance sheet.

IDEXX Points. IDEXX Points may be applied to trade receivables due to us, converted to cash, or applied against the purchase price of IDEXX products and services. We consider IDEXX Points equivalent to cash. IDEXX Points that have not yet been used by customers are included in accrued liabilities until utilized or expired. Breakage is not material because customers can apply IDEXX Points to trade receivables at any time.

Accounts Receivable. We recognize revenue when it is probable that we will collect substantially all of the consideration to which we will be entitled, based on the customer’s intent and ability to pay the promised consideration. We apply judgment in determining the customer’s ability and intention to pay, which is based on a variety of factors including the customer’s historical payment experience or, in the case of a new customer, published credit and financial information pertaining to the customer. We have no significant customers that accounted for greater than 10% of our consolidated revenues, and we have no concentration of credit risk as of June 30, 2021.

Disaggregated Revenues. We present disaggregated revenue for our CAG segment based on major product and service categories. Our Water segment is comprised of a single major product category. Although our LPD segment does not meet the quantitative thresholds to be reported as a separate segment, we believe it is important to disaggregate these revenues as a major product and service category within our Other reportable segment given its distinct markets, and therefore we have elected to report LPD as a reportable segment.

The following table presents disaggregated revenue by major product and service categories:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
CAG segment revenue:
CAG Diagnostics recurring revenue:	$	661,300	$	510,254	$	1,278,580	$	998,179
IDEXX VetLab consumables	256,352		196,061		502,444		384,774
Rapid assay products	83,887		64,658		153,498		122,088
Reference laboratory diagnostic and consulting services	293,675		228,816		569,456		449,077
CAG Diagnostics services and accessories	27,386		20,719		53,182		42,240
CAG Diagnostics capital - instruments	35,054		18,871		66,244		42,704
Veterinary software, services and diagnostic imaging systems	49,241		36,975		93,538		77,213
CAG segment revenue	745,595		566,100		1,438,362		1,118,096
Water segment revenue	37,191		28,116		71,231		62,265
LPD segment revenue	33,524		32,244		72,794		66,398
Other segment revenue	9,832		11,132		21,462		17,169
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

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Revenue by principal geographic area, based on customers’ domiciles, was as follows:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	515,238	$	405,998	$	987,876	$	802,781
Europe, the Middle East and Africa	171,553		123,969		342,803		253,735
Asia Pacific Region	83,624		71,750		168,406		135,262
Canada	39,337		25,357		72,795		49,604
Latin America	16,390		10,518		31,969		22,546
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

Costs to Obtain a Contract. We capitalize sales commissions and the related fringe benefits earned by our sales force when considered incremental and recoverable costs of obtaining a contract. Our contracts include performance obligations related to various goods and services, some of which are satisfied at a point in time and others over time. Commission costs related to performance obligations satisfied at a point in time are expensed at the time of sale, which is when revenue is recognized. Commission costs related to long-term service contracts and performance obligations satisfied over time, including extended warranties and SaaS subscriptions, are deferred and recognized on a systematic basis that is consistent with the transfer of the goods or services to which the asset relates. We apply judgment in estimating the amortization period, which ranges from 3 to 7 years, by taking into consideration our customer contract terms, history of renewals, expected length of customer relationship, as well as the useful life of the underlying technology and products. Amortization expense is included in sales and marketing expenses in the accompanying unaudited condensed consolidated statements of income. Deferred commission costs are periodically reviewed for impairment.

On December 31, 2020, our deferred commission costs, included within other assets, were $17.5 million, of which approximately $1.5 million and $3.0 million of commission expense was recognized during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of commissions related to new extended warranties and SaaS subscriptions, net of subsequent recognition, our deferred commission costs were $18.4 million at June 30, 2021. Impairments of deferred commission costs, during the three and six months ended June 30, 2021, were not material.

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NOTE 4. ACQUISITIONS

We believe that our acquisitions of businesses and other assets enhance our existing businesses by either expanding our geographic range and customer base or expanding our existing product lines. From time to time we may acquire small reference labs or radiology practices that we account for as either asset purchases or business combinations.

During the second quarter of 2021, we acquired the assets of the ezyVet cloud-based veterinary software businesses and the shares of ezyVet US, Inc., as well as the VetRadar business assets, for approximately $157.2 million, including an estimated contingent payment of $5 million. The acquired assets include the ezyVet cloud-native practice management system software and the VetRadar cloud-based workflow management software. The acquisition expands our cloud-based software offerings to support our customers with technology solutions that raise the standards of care for patients, improve practice efficiency, and enable more effective communication with pet owners. We estimate the preliminary fair value of assets acquired to be as follows: approximately $32.0 million in customer-related intangibles with a weighted average life of 10 years, approximately $8.4 million in technology-related intangibles with a weighted average life of 6 years, approximately $2.4 million in trademarks with a weighted average life of 14 years, approximately $1.8 million in non-compete agreements with a weighted average life of 5 years, approximately $109.4 million in goodwill, representing synergies within our broader CAG portfolio, and approximately $3.2 million in net tangible assets. We have not completed our allocation of goodwill to reporting units within our CAG segment. The purchase price allocation is subject to revision as additional information becomes available regarding working capital adjustments, tax-related matters, contingencies, and certain assets and liabilities. Goodwill related to this acquisition is expected to be deductible for tax purposes. Pro forma information has not been presented for this acquisition because such information is not material to the financial statements. The results of operations have been included in our CAG segment since the acquisition date. The acquisition expenses were approximately $1.8 million.

During the first quarter of 2021, we acquired the shares of a reference laboratory located in Switzerland for approximately $5.5 million in cash, including holdback and contingent payments of approximately $1.1 million. This acquisition expands our international reference laboratory presence and was accounted for as a business combination. The fair value of the assets acquired consists of approximately $4.3 million in intangible assets, primarily for customer relationships, which will be amortized over 9 years, approximately $1.8 million for goodwill, representing synergies within our broader CAG portfolio, and approximately $0.6 million of liabilities, including deferred taxes associated with the acquired intangible assets. Goodwill related to this acquisition is not deductible for tax purposes. Pro forma information has not been presented for this acquisition because such information is not material to the financial statements. The results of operations have been included in our CAG segment since the acquisition date. The acquisition expenses were not material.

NOTE 5. SHARE-BASED COMPENSATION 

The fair value of options, restricted stock units, deferred stock units, and employee stock purchase rights awarded during the three and six months ended June 30, 2021, totaled $4.0 million and $48.3 million, respectively, as compared to $2.3 million and $38.6 million for the three and six months ended June 30, 2020, respectively. The total unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding at June 30, 2021, was $80.9 million, which will be recognized over a weighted average period of approximately 1.8 years. During the three and six months ended June 30, 2021, we recognized expenses of $9.6 million and $18.5 million, respectively, as compared to $7.8 million and $15.1 million for the three and six months ended June 30, 2020, respectively, related to share-based compensation.

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the expected stock price volatility, expected term, or risk-free interest rate may necessitate distinct valuation assumptions at each grant date. As such, we may use different assumptions for options granted throughout the year. Option awards are granted with an exercise price equal to or greater than the closing market price of our common stock at the date of grant. We have never paid any cash dividends on our common stock, and we have no intention to pay such a dividend at this time; therefore, we assume that no dividends will be paid over the expected terms of option awards.

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The weighted averages of the valuation assumptions used to determine the fair value of each option award on the date of grant and the weighted average estimated fair values were as follows:

	For the Six Months Ended June 30,
	2021			2020
Share price at grant	$	542.57		$	288.49
Share price at exercise	$	546.43		$	288.49
Expected stock price volatility	31		%	27		%
Expected term, in years	6.2			6.0
Risk-free interest rate	0.7		%	1.4		%
Weighted average fair value of options granted	$	167.94		$	84.09

NOTE 6. CREDIT LOSSES  

We are exposed to credit losses primarily through our sales of products and services to our customers. We maintain allowances for credit losses for potentially uncollectible receivables. We base our estimates on a detailed analysis of specific customer situations and a percentage of our accounts receivable by aging category. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current economic conditions.

Additional allowances may be required if either the financial condition of our customers were to deteriorate, or a strengthening U.S. dollar impacts the ability of foreign customers to make payments to us on their U.S. dollar-denominated purchases. We monitor our ongoing credit exposure through active review of counterparty balances against contract terms and due dates. Our activities include timely account reconciliations, dispute resolution and payment confirmations. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

Account balances are charged off against the allowance when we believe it is probable the receivable will not be recovered. We may require collateralized asset support or a prepayment to mitigate credit risk. We do not have any off-balance sheet credit exposure related to our customers.

Accounts Receivable

The allowance for credit losses associated with accounts receivable was $6.4 million and $6.8 million at June 30, 2021 and December 31, 2020, respectively. Accounts receivable reflected on the balance sheet is net of this reserve. Based on an aging analysis, at June 30, 2021, approximately 92% of our accounts receivable had not yet reached the invoice due date and approximately 8% was considered past due, of which approximately 1% was greater than 60 days past due. At December 31, 2020, approximately 88% of our accounts receivable had not yet reached the invoice due date and approximately 12% was considered past due, of which approximately 1.5% was greater than 60 days past due.

Contract assets and lease receivables

The allowance for credit losses associated with the contract assets and lease receivables was $4.0 million and $3.7 million at June 30, 2021 and December 31, 2020, respectively. The assets reflected on the balance sheet are net of these reserves. Historically, we have experienced low credit loss rates on our customer commitment programs and lease receivables. We apply judgment in determining the customer’s ability and intention to pay, which is based on a variety of factors including the customer’s historical payment experience or, in the case of a new customer, published credit and financial information pertaining to the customer.

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NOTE 7. INVENTORIES

Inventories are stated at the lower of cost (first-in, first-out) or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The components of inventories were as follows:

(in thousands)	June 30, 2021		December 31, 2020
Raw materials	$	59,115	$	45,986
Work-in-process	25,103		20,374
Finished goods	157,174		143,513
Inventories	$	241,392	$	209,873

NOTE 8. LEASES

Maturities of operating lease liabilities were as follows:

(in thousands, except lease term and discount rate)	June 30, 2021
2021 (remainder of year)	$	9,945
2022	23,213
2023	18,917
2024	13,962
2025	10,697
Thereafter	47,114
Total lease payments	123,848
Less imputed interest	(16,283)
Total	$	107,565

Total minimum future lease payments for leases that have not commenced as of June 30, 2021, are immaterial.

Supplemental cash flow information for leases was as follows:

(in thousands)	For the Six Months Ended June 30, 2021		For the Six Months Ended June 30, 2020
Cash paid for amounts included in the measurement of operating leases liabilities	$	11,914	$	9,346
Right-of-use assets obtained in exchange for operating lease obligations, net of early lease terminations (a)	$	24,427	$	10,738

(a) Additions for the six months ended June 30, 2021, include $7.9 million of right-of-use assets obtained with the acquisition of ezyVet.

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NOTE 9. OTHER CURRENT AND LONG-TERM ASSETS

Other current assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	46,982	$	43,751
Prepaid expenses	33,227		34,556
Contract assets, net	27,695		23,837
Taxes receivable	17,383		19,476
Deferred sales commissions	6,113		5,738
Other assets	13,992		10,150
Other current assets	$	145,392	$	137,508

Other long-term assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	108,317	$	104,369
Contract assets, net	106,962		91,681
Deferred income taxes	26,770		31,549
Deferred sales commissions	12,291		11,719
Investment in long-term product supply arrangements	10,489		12,065
Taxes receivable	2,450		6,329
Other assets	38,067		31,883
Other long-term assets	$	305,346	$	289,595

NOTE 10. ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued employee compensation and related expenses	136,331		167,649
Accrued expenses	$	112,388	$	112,526
Accrued customer incentives and refund obligations	85,299		75,064
Accrued taxes	39,428		42,676
Current lease liabilities	19,235		17,733
Accrued liabilities	$	392,681	$	415,648

Other long-term liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued taxes	$	58,129	$	60,313
Other accrued long-term expenses	26,914		25,291
Other long-term liabilities	$	85,043	$	85,604

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NOTE 11. REPURCHASES OF COMMON STOCK

We primarily acquire shares by repurchases in the open market. However, we also acquire shares that are surrendered by employees in payment for the minimum required statutory withholding taxes due on the vesting of restricted stock units and the settlement of deferred stock units, otherwise referred to herein as employee surrenders. We issue shares of treasury stock upon the vesting of certain restricted stock units and upon the exercise of certain stock options. The number of shares of treasury stock issued during the three and six months ended June 30, 2021 and 2020 was not material.

The following is a summary of our open market common stock repurchases, reported on a trade date basis, and shares acquired through employee surrender:

(in thousands, except per share amounts)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Shares repurchased in the open market	341		—		618		721
Shares acquired through employee surrender for statutory tax withholding (1)	—		—		28		30
Total shares repurchased	341		—		646		751
Cost of shares repurchased in the open market	$	188,409	$	—	$	327,622	$	179,623
Cost of shares for employee surrenders	3		65		14,986		8,669
Total cost of shares	$	188,412	$	65	$	342,608	$	188,292
Average cost per share - open market repurchases	$	552.08	$	—	$	529.45	$	249.20
Average cost per share - employee surrenders	$	550.59	$	312.19	$	544.08	$	288.94
Average cost per share - total	$	552.08	$	312.19	$	530.07	$	250.79

(1) For the quarters ended June 30, 2021 and 2020, the number of shares acquired though employee surrender for statutory tax withholding were below rounding thresholds.

NOTE 12. INCOME TAXES 

Our effective income tax rate was 19.5% for the three months ended June 30, 2021, as compared to 18.9% for the three months ended June 30, 2020, and 17.3% for the six months ended June 30, 2021, as compared to 18.6% for the six months ended June 30, 2020.The increase in our effective tax rate for the three months ended June 30, 2021, as compared to the same period in the prior year, was primarily due to changes in the regional earnings mix. The decrease in our effective tax rate for the six months ended June 30, 2021, as compared to the same period in the prior year, was primarily driven by an overall increase in tax benefits from share-based compensation.

The effective tax rate for the three and six months ended June 30, 2021, differed from the U.S. statutory tax rate of 21% primarily due to tax benefits from share-based compensation.

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NOTE 13. ACCUMULATED OTHER COMPREHENSIVE INCOME

The changes in AOCI, net of tax, consisted of the following:

	For the Six Months Ended June 30, 2021
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized Gain (Loss) on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2020	$	(272)	$	(9,934)	$	(5,982)	$	(2,159)	$	(35,268)	$	(53,615)
Other comprehensive income (loss) before reclassifications	154		3,191		2,654		2,202		(7,246)		955
Loss reclassified from accumulated other comprehensive income	—		4,269		—		—		—		4,269
Balance as of June 30, 2021	$	(118)	$	(2,474)	$	(3,328)	$	43	$	(42,514)	$	(48,391)

	For the Six Months Ended June 30, 2020
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized Gain (Loss) on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized (Loss) Gain on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2019	$	110	$	(736)	$	1,396	$	3,467	$	(50,419)	$	(46,182)
Other comprehensive (loss) income before reclassifications	(574)		5,538		(642)		2,602		(15,200)		(8,276)
Gain reclassified from accumulated other comprehensive income	—		(2,574)		—		—		—		(2,574)
Balance as of June 30, 2020	$	(464)	$	2,228	$	754	$	6,069	$	(65,619)	$	(57,032)

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The following tables present components and amounts reclassified out of AOCI to net income:

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Three Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(2,715)	$	1,812
	Tax expense (benefit)	(340)		339
	Gain (loss), net of tax	$	(2,375)	$	1,473

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Six Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(5,145)	$	3,153
	Tax expense (benefit)	(876)		579
	Gain (loss), net of tax	$	(4,269)	$	2,574

NOTE 14. EARNINGS PER SHARE

Basic earnings per share is computed by dividing net income attributable to our stockholders by the weighted average number of shares of common stock and vested deferred stock units outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested restricted stock units and unvested deferred stock units using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options and the total unrecognized compensation expense for unvested share-based compensation awards, would be used to purchase our common stock at the average market price during the period. Vested deferred stock units outstanding are included in shares outstanding for basic and diluted earnings per share because the associated shares of our common stock are issuable for no cash consideration, the number of shares of our common stock to be issued is fixed, and issuance is not contingent. See Note 5 to the consolidated financial statements in our 2020 Annual Report for additional information regarding deferred stock units.

The following is a reconciliation of weighted average shares outstanding for basic and diluted earnings per share:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Dilutive effect of share-based payment awards	1,329	1,268	1,367	1,286
	86,654	86,402	86,794	86,568

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Certain awards and options to acquire shares have been excluded from the calculation of shares outstanding for diluted earnings per share because they were anti-dilutive. The following table presents information concerning those anti-dilutive awards and options:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Weighted average number of shares underlying anti-dilutive awards	—	—	1	1
Weighted average number of shares underlying anti-dilutive options	135	270	102	218

NOTE 15. COMMITMENTS, CONTINGENCIES AND GUARANTEES

Commitments

See “Note 8. Leases”, for more information regarding our lease commitments.

Contingencies and Guarantees

We are subject to claims that may arise in the ordinary course of business, including with respect to actual and threatened litigation and other matters. We accrue for loss contingencies when it is probable that future expenditures will be made, and such expenditures can be reasonably estimated. However, the results of legal actions cannot be predicted with certainty, and therefore our actual losses with respect to these contingencies could be higher and lower than our accruals. Except for the litigation matter described below, at June 30, 2021, our accruals with respect to actual and threatened litigation were not material.

We are a defendant in an ongoing litigation matter involving an alleged breach of contract for underpayment of royalty payments made from 2004 through 2017 under an expired patent license agreement. The plaintiff has asserted a claim of approximately $50 million, inclusive of interest, alleging that the incorrect royalty provision was applied to certain licensed products and services throughout the agreement term and that royalties were also due on non-licensed diagnostic services that were provided concurrently with licensed services. The trial court has ruled in favor of the plaintiff in this matter and we are appealing the judgment and continue to vigorously defend ourselves against the plaintiff’s allegations. While we believe the claim is without merit, litigation is inherently unpredictable and there can be no assurance that we will prevail in this matter. During the third quarter of 2020, we established an accrual of $27.5 million related to this ongoing matter, which represents the amount of a possible loss that we have determined to be probable and estimable. We have not made any adjustments to this accrual since it was established. The actual cost of resolving this matter may be higher or lower than the amount we have accrued.

From time to time, we have received notices alleging that our products infringe third-party proprietary rights, although we are not aware of any pending litigation with respect to such claims. Patent litigation frequently is complex and expensive, and the outcome of patent litigation can be difficult to predict. There can be no assurance that we will prevail in any infringement proceedings that may be commenced against us. If we lose any such litigation, we may be stopped from selling certain products and/or we may be required to pay damages as a result of the litigation.

We have had no significant changes to our contingencies and guarantees discussed in Note 16 to the consolidated financial statements in our 2020 Annual Report.

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NOTE 16. SEGMENT REPORTING

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision-maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. Our CODM is our Chief Executive Officer. Our reportable segments include diagnostic and information technology-based products and services for the veterinary market, which we refer to as the Companion Animal Group (“CAG”), water quality products (“Water”) and diagnostic products and services for livestock and poultry health and to ensure the quality and safety of milk and improve dairy efficiency, which we refer to as Livestock, Poultry and Dairy (“LPD”). Although our LPD segment does not meet the quantitative thresholds to be reported as a separate segment, we believe it is important to disaggregate these revenues as a major product and service category within our Other reportable segment given its distinct markets, and therefore we have elected to report LPD as a reportable segment. Our Other operating segment combines and presents products and services for the human medical diagnostics (“OPTI Medical”) market with our out-licensing arrangements. Assets are not allocated to segments for internal reporting purposes.

The following is a summary of segment performance:

(in thousands)	For the Three Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	745,595	$	37,191	$	33,524	$	9,832	$	826,142
Income from operations	$	234,735	$	17,228	$	6,868	$	422	$	259,253
Interest expense, net									(7,522)
Income before provision for income taxes									251,731
Provision for income taxes									49,125
Net income									202,606
Less: Net income attributable to noncontrolling interest									24
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	202,582
2020
Revenue	$	566,100	$	28,116	$	32,244	$	11,132	$	637,592
Income from operations	$	167,969	$	12,258	$	8,249	$	4,772	$	193,248
Interest expense, net									(9,426)
Income before provision for income taxes									183,822
Provision for income taxes									34,826
Net income									148,996
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	148,940

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(in thousands)	For the Six Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	1,438,362	$	71,231	$	72,794	$	21,462	$	1,603,849
Income from operations	$	447,945	$	32,000	$	20,676	$	6,254	$	506,875
Interest expense, net									(15,054)
Income before provision for income taxes									491,821
Provision for income taxes									84,926
Net income									406,895
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	406,839
2020
Revenue	$	1,118,096	$	62,265	$	66,398	$	17,169	$	1,263,928
Income from operations	$	286,628	$	28,140	$	17,912	$	4,893	$	337,573
Interest expense, net									(16,978)
Income before provision for income taxes									320,595
Provision for income taxes									59,743
Net income									260,852
Less: Net income attributable to noncontrolling interest									85
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	260,767

See “Note 3. Revenue Recognition” for a summary of disaggregated revenue by reportable segment and by major product and service category for the three and six months ended June 30, 2021 and 2020. 

NOTE 17. FAIR VALUE MEASUREMENTS 

U.S. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. U.S. GAAP requires an entity to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value.  

We have certain financial assets and liabilities that are measured at fair value on a recurring basis, certain nonfinancial assets and liabilities that may be measured at fair value on a non-recurring basis and certain financial assets and liabilities that are not measured at fair value in our unaudited condensed consolidated balance sheets but for which we disclose the fair value. The fair value disclosures of these assets and liabilities are based on a three-level hierarchy, which is defined as follows: 

Level 1	Quoted prices in active markets for identical assets or liabilities that the entity can access at the measurement date.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. We did not have any transfers in or out of Level 3 of the fair value hierarchy during the three and six months ended June 30, 2021.

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Our cross currency swap contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our cross currency swap contracts classified as derivative instruments using prevailing market conditions as of the close of business on each balance sheet date. The product of this calculation is then adjusted for counterparty risk.

Our foreign currency exchange contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our foreign currency exchange contracts classified as derivative instruments using an income approach, based on prevailing market forward rates less the contract rate multiplied by the notional amount. The product of this calculation is then adjusted for counterparty risk.

The amounts outstanding under our unsecured revolving credit facility (“Credit Facility” or “line of credit”) and senior notes (“long-term debt”) are measured at carrying value in our unaudited condensed consolidated balance sheets though we disclose the fair value of these financial instruments. We determine the fair value of the amount outstanding under our Credit Facility and long-term debt using an income approach, utilizing a discounted cash flow analysis based on current market interest rates for debt issues with similar remaining years to maturity, adjusted for applicable credit risk. Our Credit Facility and long-term debt are valued using Level 2 inputs. The estimated fair value of our Credit Facility approximates its carrying value. The estimated fair value and carrying value of our long-term debt were $987.8 million and $905.6 million, respectively, as of June 30, 2021, and $1.0 billion and $909.1 million, respectively, as of December 31, 2020.

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The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy:

(in thousands)
As of June 30, 2021	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2021
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,007	$	—	$	—	$	1,007
Cross currency swaps (3)	$	—	$	54	$	—	$	54
Foreign currency exchange contracts (3)	$	—	$	2,400	$	—	$	2,400
Liabilities
Foreign currency exchange contracts (3)	$	—	$	5,487	$	—	$	5,487
Deferred compensation(4)	$	1,007	$	—	$	—	$	1,007
Contingent payment- acquisitions	$	—	$	—	$	5,000	$	5,000

(in thousands)
As of December 31, 2020	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2020
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,145	$	—	$	—	$	1,145
Foreign currency exchange contracts (3)	$	—	$	125	$	—	$	125
Liabilities
Cross currency swaps (3)	$	—	$	2,841	$	—	$	2,841
Foreign currency exchange contracts (3)	$	—	$	12,373	$	—	$	12,373
Deferred compensation(4)	$	1,145	$	—	$	—	$	1,145

(1)Money market funds with an original maturity of less than ninety days are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of June 30, 2021 and December 31, 2020, consisted of demand deposits.

(2)Equity mutual funds relate to a deferred compensation plan that was assumed as part of a previous business combination. This amount is included within other long-term assets. See footnote (4) below for a discussion of the related deferred compensation liability. 

(3)Cross currency swaps and foreign currency exchange contracts are included within other current assets, other long-term assets, accrued liabilities, or other long-term liabilities depending on the gain (loss) position and anticipated settlement date.  

(4)A deferred compensation plan assumed as part of a previous business combination is included within accrued liabilities and other long-term liabilities. The fair value of our deferred compensation plan is indexed to the performance of the underlying equity mutual funds discussed in footnote (2) above.  

We have classified our liability for contingent consideration related to acquisitions within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs, which includes the achievements of future revenues. The contingent consideration is included within other long-term liabilities.

The estimated fair value of certain financial instruments, including cash and cash equivalents, accounts receivable and accounts payable, approximate carrying value due to their short maturity.

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NOTE 18. HEDGING INSTRUMENTS

Disclosure within this note is presented to provide transparency about how and why we use derivative and non-derivative instruments (collectively “hedging instruments”), how the instruments and related hedged items are accounted for, and how the instruments and related hedged items affect our financial position, results of operations and cash flows.

We are exposed to certain risks related to our ongoing business operations. The primary risk that we currently manage by using hedging instruments is foreign currency exchange risk. We may also enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with borrowings under our variable-rate Credit Facility.

Our subsidiaries enter into foreign currency exchange contracts to manage the exchange risk associated with their forecasted intercompany inventory purchases and sales for the next year. From time to time, we may also enter into other foreign currency exchange contracts, cross currency swaps or foreign-denominated debt issuances to minimize the impact of foreign currency fluctuations associated with specific balance sheet exposures, including net investments in certain foreign subsidiaries.  

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions, including transactions denominated in the euro, British pound, Japanese yen, Canadian dollar, and Australian dollar. We also utilize natural hedges to mitigate our transaction and commitment exposures. Our corporate policy prescribes the range of allowable hedging activity. We enter into foreign currency exchange contracts with well-capitalized multinational financial institutions, and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management. Our accounting policies for these contracts are based on the designation of such instruments as hedging transactions.

We recognize all hedging instruments on the balance sheet at fair value at the balance sheet date. Instruments that do not qualify for hedge accounting treatment must be recorded at fair value through earnings. To qualify for hedge accounting treatment, cash flow and net investment hedges must be highly effective in offsetting changes to expected future cash flows or fair value on hedged transactions. If the instrument qualifies for hedge accounting, changes in the fair value of the hedging instrument from the effective portion of the hedge are deferred in AOCI, net of tax, and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. We immediately record in earnings the extent to which a hedging instrument is not effective in achieving offsetting changes in fair value. We de-designate hedging instruments from hedge accounting when the likelihood of the hedged transaction occurring becomes less than probable. For de-designated instruments, the gain or loss from the time of de-designation through maturity of the instrument is recognized in earnings. Any gain or loss in AOCI at the time of de-designation is reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. See “Note 13. Accumulated Other Comprehensive Income” for further information regarding the effect of hedging instruments on our unaudited condensed consolidated statements of income for the three and six months ended June 30, 2021 and 2020.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit certain outstanding receivables and payables to be offset in the event of default. Our derivative contracts do not require either party to post cash collateral. We elect to present our derivative assets and liabilities in the unaudited condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts are classified as operating cash flows, which is consistent with the cash flow treatment of the underlying items being hedged. 

Cash Flow Hedges 

We have designated our foreign currency exchange contracts as cash flow hedges as these derivative instruments mitigate the exposure to variability in the cash flows of forecasted transactions attributable to foreign currency exchange. Unless noted otherwise, we have also designated our derivative instruments as qualifying for hedge accounting treatment.  

We did not de-designate any instruments from hedge accounting treatment during either the three and six months ended June 30, 2021 or 2020. At June 30, 2021, the estimated amount of net losses, net of tax, which are expected to be reclassified out of AOCI and into earnings within the next 12 months, is $2.9 million if exchange rates do not fluctuate from the levels at June 30, 2021. 

We target to hedge approximately 85% of the estimated exposure from intercompany product purchases and sales denominated in the euro, British pound, Canadian dollar, Japanese yen, and Australian dollar. We have additional unhedged foreign currency exposures related to foreign services and emerging markets where it is not practical to hedge. We primarily utilize foreign currency exchange contracts with durations of less than 24 months. Quarterly, we enter into contracts to hedge

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incremental portions of anticipated foreign currency transactions for the current and following year. As a result, our risk with respect to foreign currency exchange rate fluctuations and the notional value of foreign currency exchange contracts may vary throughout the year. The U.S. dollar is the currency purchased or sold in all of our foreign currency exchange contracts. The notional amount of foreign currency exchange contracts to hedge forecasted intercompany inventory purchases and sales totaled $210.2 million and $202.7 million at June 30, 2021 and December 31, 2020, respectively.

The following tables present the effect of cash flow hedge accounting on our unaudited condensed consolidated statements of income and comprehensive income, and provide information regarding the location and amounts of pretax gains or losses of derivatives: 

(in thousands)		Three Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	336,834	$	258,250
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(2,715)	$	1,812

(in thousands)		Six Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	643,759	$	524,996
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(5,145)	$	3,153

Net Investment Hedges, Euro-Denominated Notes

In June 2015, we issued and sold through a private placement an aggregate principal amount of €88.9 million in euro-denominated 1.785% Series C Senior Notes due June 18, 2025. We have designated these euro-denominated notes as a hedge of our euro net investment in certain foreign subsidiaries to reduce the volatility in stockholders’ equity caused by changes in foreign currency exchange rates in the euro relative to the U.S. dollar. As a result of this designation, gains and losses from the change in translated U.S. dollar value of these euro-denominated notes are recorded in AOCI rather than to earnings. We recorded losses of $1.0 million and gains of $2.7 million, net of tax, within AOCI as a result of this net investment hedge for the three and six months ended June 30, 2021, respectively, and losses of $1.7 million and $0.6 million for the three and six months ended June 30, 2020, respectively. The related cumulative unrealized loss recorded at June 30, 2021, will not be reclassified in earnings until the complete or substantially complete liquidation of the net investment in the hedged foreign operations or a portion of the hedge no longer qualifies for hedge accounting treatment. See Note 13 to the consolidated financial statements included in our 2020 Annual Report for further information regarding the issuance of these euro-denominated notes.

Net Investment Hedges, Cross Currency Swaps

We have entered into several cross currency swap contracts as a hedge of our net investment in foreign operations to offset foreign currency translation gains and losses on the net investment. These cross currency swaps have maturity dates beginning on June 30, 2023, through June 18, 2025. At maturity of the cross currency swap contracts, we will deliver the notional amount of €90.0 million and will receive approximately $104.5 million from the counterparties on June 30, 2023, and we will deliver the notional amount of €15 million and will receive approximately $17.5 million from the counterparties on June 18, 2025. The change in fair value of the cross currency swap contracts are recorded in AOCI and will be reclassified to earnings when the foreign subsidiaries are sold or substantially liquidated. During the three and six months ended June 30, 2021, we recorded losses of $1.1 million and gains of $2.2 million, respectively, net of tax, within AOCI as a result of these net investment hedges, and losses of $1.4 million and gains of $2.6 million during the three and six months ended June 30, 2020, respectively. We will receive quarterly interest payments from the counterparties based on a fixed interest rate until maturity of the cross currency swaps. This interest rate component is excluded from the assessment of hedge effectiveness and, thus is recognized as a reduction to interest expense over the life of the hedge instrument. We recognized approximately $0.7 million and $1.4 million related to the excluded component as a reduction of interest expense for the three and six months ended June 30, 2021, respectively, and $0.7 million and $1.3 million for the three and six months ended June 30, 2020, respectively.

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Fair Values of Hedging Instruments Designated as Hedges in Consolidated Balance Sheets

The fair values of hedging instruments and their respective classification on our unaudited condensed consolidated balance sheets and amounts subject to offset under master netting arrangements consisted of the following derivative instruments, unless otherwise noted: 

(in thousands)		Hedging Assets
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	1,676	$	125
Cross currency swaps	Other long-term assets	54		—
Foreign currency exchange contracts	Other long-term assets	724		—
Total derivative instruments presented as hedge instruments on the balance sheet		2,454		125
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	444	$	—

(in thousands)		Hedging Liabilities
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	5,349	$	12,373
Cross currency swaps	Other long-term liabilities	—		2,841
Foreign currency exchange contracts	Other long-term liabilities	138		—
Total derivative instruments presented as cash flow hedges on the balance sheet		5,487		15,214
Non-derivative foreign currency denominated debt designated as net investment hedge on the balance sheet(1)	Long-term debt	105,634		109,125
Total hedging instruments presented on the balance sheet		111,121		124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	109,111	$	124,214

(1) Amounts represent reported carrying amounts of our foreign currency denominated debt. See “Note 17. Fair Value Measurements” for information regarding the fair value of our long-term debt.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations. 

This Quarterly Report on Form 10-Q contains statements which, to the extent they are not statements of historical fact, constitute “forward-looking statements.” Such forward-looking statements about our business and expectations within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), include statements relating to, among other things, the impact of the COVID-19 pandemic; future revenue growth rates; revenue recognition timing and amounts; business trends, earnings and other measures of financial performance; the effect of economic downturns on our business performance; projected impact of foreign currency exchange rates; demand for our products; realizability of assets; future cash flow and uses of cash; future repurchases of common stock; future levels of indebtedness and capital spending, the working capital and liquidity outlook; the adoption and projected impact of new accounting standards; critical accounting estimates; deductibility of goodwill; future commercial efforts; and competition. Forward-looking statements can be identified by the use of words such as “expects,” “may,” “anticipates,” “intends,” “would,” “will,” “plans,” “believes,” “estimates,” “should,” “project,” and similar words and expressions. These forward-looking statements are intended to provide our current expectations or forecasts of future events; are based on current estimates, projections, beliefs, and assumptions; and are not guarantees of future performance. Actual events or results may differ materially from those described in the forward-looking statements. These forward-looking statements involve a number of risks and uncertainties, including, among other things, the adverse impact, and the duration, of the effects of the ongoing COVID-19 pandemic on our business, results of operations, liquidity, financial condition, and stock price, as well as the other matters described under the headings “Business,” “Risk Factors,” “Legal Proceedings,” “Management's Discussion and Analysis of Financial Condition and Results of Operations,” and “Quantitative and Qualitative Disclosure About Market Risk” in our 2020 Annual Report and in the corresponding sections of this Quarterly Report on Form 10-Q for the quarters ended March 31, 2021, and June 30, 2021, as well as those described from time to time in our other periodic reports filed with the SEC.

Any forward-looking statements represent our estimates only as of the day this Quarterly Report on Form 10-Q was filed with the SEC and should not be relied upon as representing our estimates as of any subsequent date. From time to time, oral or written forward-looking statements may also be included in other materials released to the public. While we may elect to update forward-looking statements at some point in the future, we specifically disclaim any obligation to do so, even if our estimates or expectations change.  

You should read the following discussion and analysis in conjunction with our 2020 Annual Report that includes additional information about us, our results of operations, our financial position, and our cash flows, and with our unaudited condensed consolidated financial statements and related notes included in Part I. Item 1. Financial Statements of this Quarterly Report on Form 10-Q.

Our fiscal quarter ended on June 30. Unless otherwise stated, the analysis and discussion of our financial condition and results of operations below, including references to growth and organic growth and increases and decreases, are being compared to the equivalent prior-year periods.

Business Overview 

We develop, manufacture, and distribute products and provide services primarily for the companion animal veterinary, livestock, poultry and dairy, and water testing markets. We also design, manufacture, and distribute point of care and laboratory diagnostics for the human medical diagnostics market. Our primary products and services are:

•Point-of-care veterinary diagnostic products, comprising instruments, consumables, and rapid assay test kits;

•Veterinary reference laboratory diagnostic and consulting services;

•Practice management and diagnostic imaging systems and services used by veterinarians;

•Health monitoring, biological materials testing, laboratory diagnostic instruments and services used by the biomedical research community;

•Diagnostic, health-monitoring products for livestock, poultry, and dairy;

•Products that test water for certain microbiological contaminants; and

•Point-of-care electrolytes, blood gas analyzers, and SARS-CoV-2 RT-PCR (COVID-19 test) used in the human medical diagnostics market.

Operating Segments. We operate primarily through three business segments: diagnostic and information technology-based products and services for the veterinary market, which we refer to as the Companion Animal Group (“CAG”), water quality products (“Water”) and diagnostic products and services for livestock and poultry health and to ensure the quality and safety of milk and improve dairy reproductive efficiency, which we refer to as Livestock, Poultry and Dairy (“LPD”). Our

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Other operating segment combines and presents products for the human medical diagnostics market (“OPTI Medical”) with our out-licensing arrangements because they do not meet the quantitative or qualitative thresholds for reportable segments. 

CAG develops, designs, manufactures, and distributes products and performs services for veterinarians and the biomedical analytics market, primarily related to diagnostics and information management. Water develops, designs, manufactures, and distributes a range of products used in the detection of various microbiological parameters in water. LPD develops, designs, manufactures, and distributes diagnostic tests and related software and performs services that are used to manage the health status of livestock and poultry, to improve bovine reproductive efficiency, and to ensure the quality and safety of milk. OPTI Medical develops, designs, manufactures, and distributes point-of-care and laboratory diagnostics (including electrolyte and blood gas analyzers, COVID-19 PCR test, and related consumable products) for the human medical diagnostics market.

Effects of Certain Factors and Trends on Results of Operations 

CAG Market Trends. Favorable global trends in companion animal healthcare continue to support high growth for CAG diagnostic products and services across regions. U.S. same-store clinical visit growth at veterinary practices was approximately 13% in the second quarter, reflecting year-over-year growth of approximately 11% in non-wellness visits and approximately 14% in wellness visits. These gains include benefits from comparisons to prior year impacts on demand related to the COVID-19 pandemic. Average same-store revenue growth at U.S. veterinary practices was approximately 16% in the second quarter, driven by high growth in healthcare services, including increased utilization of diagnostics. For the remainder of the current year, we expect to see lower levels of growth in U.S. clinical visits and CAG Diagnostic revenue, as compared to the second half of the prior year, which included initial pandemic impacts, including benefits in the third quarter of 2020 due to delayed demand from the prior quarter. Furthermore, the potential effects related to ongoing COVID-19 case management efforts are challenging to predict and may pressure future revenues in CAG and our other segments should enhanced or renewed social distancing policies and higher infection rates impact our customers in certain regions.

Other Market Trends. We anticipate reduced LPD revenues on a year-over-year comparison in the second half of 2021, as we compare to high prior-year demand for our African Swine Fever testing in China. We also expect that revenues from our China LPD business may decline in the second half of 2021 from the rebuilding of swine herds, lower pork prices, and changing government requirements related to live animal imports and livestock infectious disease programs.

Currency and Other Items

Currency Impact. See “Part I. Item 3. Quantitative and Qualitative Disclosures about Market Risk” included in this Quarterly Report on Form 10-Q for additional information regarding the impact of foreign currency exchange rates.

Other Items. See “Part I. Item 1. Business - Patents and Licenses” and “Part II. Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our 2020 Annual Report for additional information regarding distributor purchasing and inventories, economic conditions, and patent expiration.

Critical Accounting Estimates and Assumptions 

The discussion and analysis of our financial condition and results of operations is based upon our unaudited condensed consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, and expenses, and related disclosure of contingent assets and liabilities. We evaluate our estimates on an ongoing basis. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. The critical accounting policies and the significant judgments and estimates used in the preparation of our unaudited condensed consolidated financial statements for the three and six months ended June 30, 2021, are consistent with those discussed in our 2020 Annual Report in the section under the heading “Part II. Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Estimates and Assumptions.”  

Recent Accounting Pronouncements 

For more information regarding the impact that recent accounting standards and amendments will have on our consolidated financial statements as described in Note 2 to the unaudited condensed consolidated financial statements in Part I. Item 1. Financial Statements of this Quarterly Report on Form 10-Q.

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Non-GAAP Financial Measures

The following revenue analysis and discussion focuses on organic revenue growth, and references in this analysis and discussion to “revenue,” “revenues” or “revenue growth” are references to “organic revenue growth.” Organic revenue growth is a non-GAAP financial measure and represents the percentage change in revenue during the three and six months ended June 30, 2021, as compared to the same periods for the prior year, net of the effect of changes in foreign currency exchange rates, certain business acquisitions, and divestitures. Organic revenue growth should be considered in addition to, and not as a replacement for, or as a superior measure to, revenue growth reported in accordance with U.S. GAAP, and may not be comparable to similarly titled measures reported by other companies. Management believes that reporting organic revenue growth provides useful information to investors by facilitating easier comparisons of our revenue performance with prior and future periods and to the performance of our peers.

We exclude from organic revenue growth the effect of changes in foreign currency exchange rates because changes in foreign currency exchange rates are not under management’s control, are subject to volatility, and can obscure underlying business trends. We calculate the impact on revenue resulting from changes in foreign currency exchange rates by applying the difference between the weighted average exchange rates during the current year period and the comparable prior-year period to foreign currency denominated revenues for the prior-year period. 

We also exclude from organic revenue growth the effect of certain business acquisitions and divestitures because the nature, size and number of these transactions can vary dramatically from period to period, and because they either require or generate cash as an inherent consequence of the transaction, and therefore can also obscure underlying business and operating trends. We exclude only acquisitions that are considered to be a business from organic revenue growth. In a business combination, if substantially all the fair value of the assets acquired is concentrated in a single asset or group of similar assets, we do not consider these assets to be a business and include these acquisitions in organic revenue growth. A typical acquisition that we do not consider a business is a customer list asset acquisition, which does not have all elements necessary to operate a business, such as employees or infrastructure. We believe the efforts required to convert and retain these acquired customers are similar in nature to our existing customer base and therefore are included in organic revenue growth.

We also use Adjusted EBITDA, gross debt, net debt, gross debt to Adjusted EBITDA ratio and net debt to Adjusted EBITDA ratio, in this Quarterly Report on Form 10-Q, all of which are non-GAAP financial measures that should be considered in addition to, and not as a replacement for, financial measures presented according to U.S. GAAP. Management believes that reporting these non-GAAP financial measures provides supplemental analysis to help investors further evaluate our business performance and available borrowing capacity under our Credit Facility.

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Results of Operations

Three Months Ended June 30, 2021, Compared to Three Months Ended June 30, 2020

Total Company. The following table presents total Company revenue by operating segment:

	For the Three Months Ended June 30,
Net Revenue (dollars in thousands)	2021		2020		Dollar Change		Reported Revenue Growth(1)		Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth(1)
CAG	$	745,595	$	566,100	$	179,495	31.7	%	3.7	%	0.6	%	27.4	%
United States	486,252		387,113		99,139		25.6	%	—		0.6	%	25.0	%
International	259,343		178,987		80,356		44.9	%	12.0	%	0.6	%	32.3	%
Water	37,191		28,116		9,075		32.3	%	5.7	%	—		26.6	%
United States	17,747		13,935		3,812		27.4	%	—		—		27.4	%
International	19,444		14,181		5,263		37.1	%	11.2	%	—		25.9	%
LPD	33,524		32,244		1,280		4.0	%	5.9	%	—		(2.0	%)
United States	3,516		3,242		274		8.4	%	—		—		8.4	%
International	30,008		29,002		1,006		3.5	%	6.5	%	—		(3.1	%)
Other	9,832		11,132		(1,300)		(11.7	%)	4.5	%	—		(16.2	%)
Total Company	$	826,142	$	637,592	$	188,550	29.6	%	3.9	%	0.5	%	25.1	%
United States	515,238		405,998		109,240		26.9	%	—		0.6	%	26.3	%
International	310,904		231,594		79,310		34.2	%	10.7	%	0.5	%	23.1	%

(1)Reported revenue growth and organic revenue growth may not recalculate due to rounding.

Total Company Revenue. The increase in both U.S. and international organic revenues was driven by strong volume gains in CAG Diagnostics recurring revenue, reflecting continued high demand for companion animal diagnostics globally, supported by an increase in clinical visits and diagnostic utilization per clinical visit, as compared to the second quarter of the prior year, which included initial pandemic impacts. Our CAG Diagnostics instrument revenue reflects high placement volume this quarter, as compared to the second quarter in the prior year, which was impacted by the global pandemic. In our LPD business, excluding the impact for currency movements, revenues decreased primarily as a result of lower swine and poultry testing in China, as well as lower heard health screening. The higher revenue in our Water business was the result of recovery of overall testing volumes including continued improvement in non-compliance testing volume that has been constrained during the pandemic and disruption in certain compliance testing during the second quarter of the prior year. Other revenues reflect lower demand, which has occurred as vaccination rates increase for human OPTI COVID-19 PCR test and services, which were introduced in the second quarter of 2020. The impact of currency movements increased total revenue by 3.9%, while acquisitions increased revenue by 0.5%.

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    The following table presents total Company results of operations:

	For the Three Months Ended June 30,								Change
Total Company - Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	826,142			$	637,592			$	188,550	29.6	%
Cost of revenue	336,834				258,250				78,584		30.4	%
Gross profit	489,308		59.2	%	379,342		59.5	%	109,966		29.0	%
Operating Expenses:
Sales and marketing	119,032		14.4	%	94,181		14.8	%	24,851		26.4	%
General and administrative	73,326		8.9	%	60,268		9.5	%	13,058		21.7	%
Research and development	37,697		4.6	%	31,645		5.0	%	6,052		19.1	%
Total operating expenses	230,055		27.8	%	186,094		29.2	%	43,961		23.6	%
Income from operations	$	259,253	31.4	%	$	193,248	30.3	%	$	66,005	34.2	%

Gross Profit. Gross profit increased due to higher sales volumes despite a modest 30 basis point decrease in the gross profit margin. The net decrease in the gross profit margin was driven by several factors including the mix impact from higher CAG Diagnostics instrument revenue and moderated laboratory productivity gains reflecting comparisons to tightly controlled prior year cost levels, as a response to the onset of the COVID-19 pandemic. These impacts were partially offset by the benefits of volume leverage in our CAG Diagnostics recurring revenue portfolio following the initial pandemic impacts in the second quarter of the prior year and moderate net price increases, as well as strong growth in veterinary software, services and diagnostics recurring revenues. The impact from foreign currency movements decreased the gross profit margin by less than 10 basis points, including the impact of hedge losses in the current year compared to hedge gains in the prior year.

Operating Expenses. Overall operating expenses were higher compared to the second quarter of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits, and travel costs. Sales and marketing expense increased primarily due to higher personnel-related costs, including investments in our global commercial capability, as well as travel costs. General and administrative expense increased primarily due to higher personnel-related costs. Research and development expense increased primarily due to higher project and personnel-related costs. The overall change in currency exchange rates resulted in an increase in operating expenses of approximately 3%.

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Companion Animal Group

The following table presents revenue by product and service category for CAG: 

	For the Three Months Ended June 30,
Net Revenue (dollars in thousands)	2021		2020		Dollar Change		Reported Revenue Growth (1)		Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth (1)
CAG Diagnostics recurring revenue:	$	661,300	$	510,254	$	151,046	29.6	%	3.7	%	0.3	%	25.6	%
IDEXX VetLab consumables	256,352		196,061		60,291		30.8	%	4.8	%	—		26.0	%
Rapid assay products	83,887		64,658		19,229		29.7	%	1.8	%	—		28.0	%
Reference laboratory diagnostic and consulting services	293,675		228,816		64,859		28.3	%	3.2	%	0.6	%	24.5	%
CAG diagnostics services and accessories	27,386		20,719		6,667		32.2	%	4.7	%	—		27.5	%
CAG Diagnostics capital - instruments	35,054		18,871		16,183		85.8	%	7.5	%	—		78.3	%
Veterinary software, services and diagnostic imaging systems	49,241		36,975		12,266		33.2	%	1.5	%	5.8	%	25.9	%
Net CAG revenue	$	745,595	$	566,100	$	179,495	31.7	%	3.7	%	0.6	%	27.4	%

(1) Reported revenue growth and organic revenue growth may not recalculate due to rounding

CAG Diagnostics Recurring Revenue. We continue to see strong market demand for companion animal diagnostics globally across modalities, including an increase in clinical visits and high levels of growth in testing volumes following the initial pandemic impact, which constrained volumes beginning in mid-March through May 2020. This volume growth includes an increase in diagnostic utilization per clinical visit. The increase in CAG Diagnostics recurring revenue was primarily due to increased reference laboratory diagnostic services, volumes in IDEXX VetLab consumables, and rapid assay products, and to a lesser extent, higher realized prices. The impact of currency movements increased revenues by 3.7%.

The increase in IDEXX VetLab® consumables revenue was primarily due to higher sales volumes for our Catalyst® consumables and, to a lesser extent, ProCyte consumables. These increases were supported by an increase in testing utilization across regions, high customer retention levels and expansion of our global premium instrument installed base.

The increase in rapid assay revenue resulted primarily from higher SNAP® 4Dx Plus sales volumes and higher realized prices. Results reflected strong growth in all major regions.

The increase in reference laboratory diagnostic and consulting services revenue was primarily due to higher testing volumes in all major regions, as well as higher average unit sales prices. Acquisitions increased revenue by 0.6%.

The increase in CAG Diagnostics services and accessories revenue was primarily a result of the increase in our active installed base of instruments.

CAG Diagnostics Capital – Instrument Revenue. The increase in instrument revenue was primarily due to strong premium instrument placements globally, as compared to constrained placements in the second quarter of 2020, as a result of the global pandemic, due to restrictions on our sales professionals’ access to clinics and certain customers’ deferral of new instrument purchases, which resulted in lower sales volumes.

Veterinary Software, Services and Diagnostic Imaging Systems Revenue. The increase in revenue was primarily due to higher imaging system placements, specifically our ImageVue DR 30 platform, as compared to the second quarter of 2020 during which diagnostic imaging placements were lower due to restrictions on our sales professionals’ access to clinics and certain customers deferring purchase decisions as a result of the COVID-19 pandemic. We also had increased veterinary

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software and diagnostic imaging subscription-based service revenue, due to increases in our active installed base, new diagnostic imaging instrument and veterinary software system placements, and higher realized prices on these service offerings. Acquisitions increased revenue 5.8%.

The following table presents the CAG segment results of operations:

	For the Three Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	745,595			$	566,100			$	179,495	31.7	%
Cost of revenues	304,809				231,633				73,176		31.6	%
Gross profit	440,786		59.1	%	334,467		59.1	%	106,319		31.8	%
Operating Expenses:
Sales and marketing	109,151		14.6	%	86,096		15.2	%	23,055		26.8	%
General and administrative	64,134		8.6	%	53,533		9.5	%	10,601		19.8	%
Research and development	32,766		4.4	%	26,869		4.7	%	5,897		21.9	%
Total operating expenses	206,051		27.6	%	166,498		29.4	%	39,553		23.8	%
Income from operations	$	234,735	31.5	%	$	167,969	29.7	%	$	66,766	39.7	%

Gross Profit. Gross profit increased primarily due to higher sales volume. Increases in the gross profit margin were primarily due to the benefits of volume leverage and price increases in our CAG Diagnostics recurring revenue portfolio, including significant volume leverage within our reference laboratories, which was moderated in comparisons to the tightly controlled prior year cost levels within laboratory operations. Furthermore, we saw strong growth in veterinary software, services and diagnostic imaging recurring revenues, including the positive impact of acquisitions. These favorable factors were offset by the impact from product mix with higher CAG Diagnostics instrument revenue, as well as an impairment of rental assets in certain regions. The impact from foreign currency movements increased the gross profit margin by less than 10 basis points, including the impact of hedge losses in the current year compared to hedge gains in the prior year.

Operating Expenses. Overall operating expenses were higher compared to the second quarter of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing expense increased primarily due to higher personnel-related costs, including investments in our global commercial capability, as well as travel costs. General and administrative expense increased primarily due to personnel-related costs. Research and development expense increased primarily due to increased project and personnel-related costs. The overall change in currency exchange rates increased operating expenses by approximately 2%.

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Water

The following table presents the Water segment results of operations:

	For the Three Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	37,191			$	28,116			$	9,075	32.3	%
Cost of revenue	11,444				8,438				3,006		35.6	%
Gross profit	25,747		69.2	%	19,678		70.0	%	6,069		30.8	%
Operating Expenses:
Sales and marketing	4,099		11.0	%	3,399		12.1	%	700		20.6	%
General and administrative	3,384		9.1	%	3,193		11.4	%	191		6.0	%
Research and development	1,036		2.8	%	828		2.9	%	208		25.1	%
Total operating expenses	8,519		22.9	%	7,420		26.4	%	1,099		14.8	%
Income from operations	$	17,228	46.3	%	$	12,258	43.6	%	$	4,970	40.5	%

Revenue. The increase in revenue was primarily a result of the continued improvement in overall testing volumes, including non-compliance testing volume that has been constrained during the COVID-19 pandemic. The increase in revenues was also due to disruption in certain compliance testing areas during the second quarter of the prior year due to social distancing policies, including beach and pool closures, as well as the impact of customer stocking orders in the first quarter of 2020 ahead of the pandemic, that impacted second quarter 2020 volumes. The impact of currency movements increased revenue by approximately 5.7%.

Gross Profit. Gross profit increased due to higher sales volumes despite an 80 basis point decrease in the gross profit margin, which reflected a 110 basis point reduction due to foreign currency movements, including the impact of hedge losses in the current year compared to hedge gains in the prior year. Excluding currency impacts, the increase in gross profit margin reflected the net benefit of price increases and volume leverage.

Operating Expenses.  Overall operating expenses were higher compared to the second quarter of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing and general and administrative expenses increased primarily due to higher personnel-related costs. Research and development expense increased primarily due to third-party costs. The overall change in currency exchange rates resulted in an increase in operating expenses of approximately 3%.

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Livestock, Poultry and Dairy 

The following table presents the LPD segment results of operations:

	For the Three Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	33,524			$	32,244			$	1,280	4.0	%
Cost of revenue	13,998				13,405				593		4.4	%
Gross profit	19,526		58.2	%	18,839		58.4	%	687		3.6	%
Operating Expenses:
Sales and marketing	5,142		15.3	%	4,298		13.3	%	844		19.6	%
General and administrative	4,271		12.7	%	3,678		11.4	%	593		16.1	%
Research and development	3,245		9.7	%	2,614		8.1	%	631		24.1	%
Total operating expenses	12,658		37.8	%	10,590		32.8	%	2,068		19.5	%
Income from operations	$	6,868	20.5	%	$	8,249	25.6	%	$	(1,381)	(16.7	%)

Revenue. The favorable impact of foreign currency movements increased revenues 5.9%. Excluding the impact of currency, overall revenues decreased primarily due to lower swine testing volumes in China, as swine herds are rebuilt, pork prices are low, and government requirements change related to live animal imports and livestock infectious disease programs, in comparison to high prior-year demand for African Swine Fever testing. We anticipate these trends will continue to impact our revenues in China during the second half of 2021. These decreases were partially offset by higher bovine testing volumes in Europe and the Americas, as compared to pandemic impacts in the second quarter of the prior year.

Gross Profit. Gross profit increased due to higher sales volumes despite a 20 basis point decrease in the gross profit margin. Excluding currency impacts, the gross profit margin increased as a result of lower product costs due to product mix. The impact of currency movements, including the impact of hedge losses in the current year compared to hedge gains in the prior year, reduced the gross margin by approximately 90 basis points.

Operating Expenses. Overall operating expenses were higher compared to the second quarter of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing expense increased primarily due to higher travel and personnel-related costs. General and administrative expenses increased primarily due to higher personnel-related costs. Research and development expense increased primarily due to higher personnel-related costs and third-party development costs. The overall change in currency exchange rates resulted in an increase in operating expenses of approximately 4%.

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Other

The following table presents the Other results of operations:

	For the Three Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	9,832			$	11,132			$	(1,300)	(11.7	%)
Cost of revenue	6,583				4,774				1,809		37.9	%
Gross profit	3,249		33.0	%	6,358		57.1	%	(3,109)		(48.9	%)
Operating Expenses:
Sales and marketing	640		6.5	%	388		3.5	%	252		64.9	%
General and administrative	1,537		15.6	%	(136)		(1.2	%)	1,673		(1,230.1	%)
Research and development	650		6.6	%	1,334		12.0	%	(684)		(51.3	%)
Total operating expenses	2,827		28.8	%	1,586		14.2	%	1,241		78.2	%
Income from operations	$	422	4.3	%	$	4,772	42.9	%	$	(4,350)	(91.2	%)

Revenue. The decrease in revenue was primarily due to lower OPTI COVID-19 PCR testing products and services, as compared to the second quarter of 2020 when the COVID-19 product and services were introduced, partially offset by higher royalty revenue associated with intellectual property related to our former pharmaceutical product line and higher OPTI Medical consumables. We currently estimate that the future demand for our OPTI COVID-19 PCR testing products and services will be lower than prior periods, although it is difficult to project given the uncertain nature of the COVID-19 pandemic, including the spread of variants, rates of vaccinations, governmental and private institution testing requirements, and alternative suppliers. The impact of currency movements on revenue was 4.5%.

Gross Profit. The decrease in gross profit was primarily due to lower sales volumes of our OPTI COVID-19 PCR testing products and services and a 2,410 basis point decrease in the gross profit margin, primarily due to higher product costs associated with write-downs of excess COVID-19 testing inventory, partially offset by the benefits of mix due to higher royalty revenue associated with our former pharmaceutical product line. The overall change in currency exchange rates had an immaterial impact on gross profit.

Operating Expenses. Sales and marketing expense increased primarily due to higher personnel-related costs. General and administrative expense increased primarily due to foreign exchange losses on settlements of foreign currency denominated transactions, as compared to gains in the prior year, for all operating segments, which are reported within our Other segment. Research and development expense decreased primarily due to lower project costs associated with the development of the OPTI COVID-19 PCR test.

Non-Operating Items

Interest Expense. Interest expense was $7.6 million for the three months ended June 30, 2021, as compared to $9.5 million for the same period in the prior year. The decrease in interest expense was primarily the result of lower average debt levels.

Provision for Income Taxes. Our effective income tax rate was 19.5% for the three months ended June 30, 2021, as compared to 18.9% for the three months ended June 30, 2020. The increase in our effective tax rate was primarily due to changes in the regional earnings mix.

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Results of Operations

Six Months Ended June 30, 2021, Compared to Six Months Ended June 30, 2020

Total Company. The following table presents total Company revenue by operating segment:

	For the Six Months Ended June 30,
Net Revenue (dollars in thousands)	2021		2020		Dollar Change		Reported Revenue Growth (1)		Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth (1)
CAG	$	1,438,362	$	1,118,096	$	320,266	28.6	%	3.3	%	0.4	%	25.0	%
United States	930,662		760,388		170,274		22.4	%	—		0.4	%	22.0	%
International	507,700		357,708		149,992		41.9	%	10.8	%	0.4	%	30.7	%
Water	71,231		62,265		8,966		14.4	%	3.7	%	—		10.7	%
United States	34,315		30,876		3,439		11.1	%	—		—		11.1	%
International	36,916		31,389		5,527		17.6	%	7.3	%	—		10.3	%
LPD	72,794		66,398		6,396		9.6	%	5.8	%	—		3.8	%
United States	7,264		7,019		245		3.5	%	—		—		3.5	%
International	65,530		59,379		6,151		10.4	%	6.5	%	—		3.8	%
Other	21,462		17,169		4,293		25.0	%	4.2	%	—		20.8	%
Total Company	$	1,603,849	$	1,263,928	$	339,921	26.9	%	3.5	%	0.3	%	23.1	%
United States	987,876		802,781		185,095		23.1	%	—		0.3	%	22.7	%
International	615,973		461,147		154,826		33.6	%	9.6	%	0.3	%	23.6	%

(1)Reported revenue growth and organic revenue growth may not recalculate due to rounding.

Total Company Revenue. The increase in both U.S. and international organic revenues was driven by strong volume gains in CAG Diagnostics recurring revenue, reflecting continued high demand for companion animal diagnostics globally, supported by an increase in clinical visits and diagnostic utilization per clinical visit, as compared to the first half of 2020, which included the initial pandemic impacts. Our CAG Diagnostics instrument revenue reflects high placement volumes compared to the first half of the prior year, which was impacted by the global pandemic. The growth in our LPD business was primarily due to the demand for swine testing in China and occurred predominantly in the first quarter. The higher revenue in our Water business was primarily a result of the continued improvement in non-compliance testing that has been constrained during the pandemic and disruption in certain compliance testing during the second quarter of the prior year. The impact of currency movements increased total revenue by 3.5%.

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The following table presents total Company results of operations:

	For the Six Months Ended June 30,								Change
Total Company - Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	1,603,849			$	1,263,928			$	339,921	26.9	%
Cost of revenue	643,759				524,996				118,763		22.6	%
Gross profit	960,090		59.9	%	738,932		58.5	%	221,158		29.9	%
Operating Expenses:
Sales and marketing	233,843		14.6	%	210,324		16.6	%	23,519		11.2	%
General and administrative	144,096		9.0	%	126,080		10.0	%	18,016		14.3	%
Research and development	75,276		4.7	%	64,955		5.1	%	10,321		15.9	%
Total operating expenses	453,215		28.3	%	401,359		31.8	%	51,856		12.9	%
Income from operations	$	506,875	31.6	%	$	337,573	26.7	%	$	169,302	50.2	%

Gross Profit. Gross profit increased due to higher sales volumes, as well as a 140 basis point increase in the gross profit margin. The increase in the gross profit margin was primarily due to volume leverage in our CAG Diagnostics recurring portfolio following the initial pandemic impacts in the first half of the prior year, price increases, and strong growth in veterinary software, services and diagnostic imaging recurring revenues. These increases were partially offset by product mix with higher CAG Diagnostics instrument revenue. The impact from foreign currency movements decreased the gross profit margin by less than 10 basis points, including the impact of hedge losses in the current year compared to hedge gains in the prior year.

Operating Expenses. Overall operating expenses were higher compared to the first half of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing expense increased primarily due to higher personnel-related costs, including investments in our global commercial capability, partially offset by lower travel costs. General and administrative expense increased primarily due to higher personnel-related costs, partially offset by an increase in the bad debt reserve during the first quarter of 2020. Research and development expense increased primarily due to higher project and personnel-related costs. The overall change in currency exchange rates increased operating expenses by approximately 2%.

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Companion Animal Group

The following table presents revenue by product and service category for CAG: 

	For the Six Months Ended June 30,
Net Revenue (dollars in thousands)	2021		2020		Dollar Change		Reported Revenue Growth (1)		Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth (1)
CAG Diagnostics recurring revenue:	$	1,278,580	$	998,179	$	280,401	28.1	%	3.4	%	0.2	%	24.5	%
IDEXX VetLab consumables	502,444		384,774		117,670		30.6	%	4.4	%	—		26.2	%
Rapid assay products	153,498		122,088		31,410		25.7	%	1.5	%	—		24.2	%
Reference laboratory diagnostic and consulting services	569,456		449,077		120,379		26.8	%	3.0	%	0.4	%	23.4	%
CAG diagnostics services and accessories	53,182		42,240		10,942		25.9	%	4.2	%	—		21.7	%
CAG Diagnostics capital - instruments	66,244		42,704		23,540		55.1	%	5.4	%	—		49.8	%
Veterinary software, services and diagnostic imaging systems	93,538		77,213		16,325		21.1	%	1.1	%	2.8	%	17.2	%
Net CAG revenue	$	1,438,362	$	1,118,096	$	320,266	28.6	%	3.3	%	0.4	%	25.0	%

(1) Reported revenue growth and organic revenue growth may not recalculate due to rounding

CAG Diagnostics Recurring Revenue. We continue to see strong market demand for companion animal diagnostics globally across modalities, including high levels of growth in testing volumes following the initial pandemic impacts, which constrained volumes beginning in mid-March 2020 through May 2020. This volume growth includes an increase in clinical visits and diagnostic utilization per clinical visit. The increase in CAG Diagnostics recurring revenue was primarily due to increased volumes in IDEXX VetLab consumables, reference laboratory diagnostic services, and rapid assay products and, to a lesser extent, higher realized prices. The impact of currency movements increased revenue 3.4%.

The increase in IDEXX VetLab consumables revenue was primarily due to higher sales volumes for our Catalyst consumables and, to a lesser extent, ProCyte consumables. These increases were supported by an increase in testing utilization across regions, high customer retention levels, and expansion of our global premium instrument installed base.

The increase in rapid assay revenue resulted primarily from higher SNAP® 4Dx Plus sales volumes, as well as higher realized prices.

The increase in reference laboratory diagnostic and consulting services revenue was primarily due to higher testing volumes globally, as well as higher average unit sales prices. Acquisitions increased revenue by 0.4%.

The increase in CAG Diagnostics services and accessories revenue was primarily a result of the increase in our active installed base of instruments.

CAG Diagnostics Capital – Instrument Revenue. The increase in instrument revenue was primarily due to strong premium instrument placements globally, as compared to constrained placements in the first half of 2020, as a result of the global pandemic, due to restrictions on our sales professionals’ access to clinics and certain customers’ deferral of new instrument placements, which resulted in lower sales volumes.

Veterinary Software, Services and Diagnostic Imaging Systems Revenue. The increase in revenue was primarily due to increased veterinary software and diagnostic imaging subscription-based services due to the increases in our active installed base, new veterinary software system placements, and to a lesser extent, higher realized prices on these service offerings. Revenue also increased with higher imaging systems placements in the second quarter, specifically our ImageVue DR 30 platform, as compared to the second quarter of 2020 when diagnostic imaging placements were lower due to restriction on our

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sales professionals’ access to clinic and certain customers deferring purchase decisions as a result of the COVID-19 pandemic. These favorable impacts were partially offset by a decrease in diagnostic imaging instrument revenue impacted by a reduction in earlier generation instrument platform sales. Acquisitions increased revenue 2.8%.

The following table presents the CAG segment results of operations:

	For the Six Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	1,438,362			$	1,118,096			$	320,266	28.6	%
Cost of revenue	584,702				474,286				110,416		23.3	%
Gross profit	853,660		59.3	%	643,810		57.6	%	209,850		32.6	%
Operating Expenses:
Sales and marketing	213,442		14.8	%	192,098		17.2	%	21,344		11.1	%
General and administrative	127,038		8.8	%	109,136		9.8	%	17,902		16.4	%
Research and development	65,235		4.5	%	55,948		5.0	%	9,287		16.6	%
Total operating expenses	405,715		28.2	%	357,182		31.9	%	48,533		13.6	%
Income from operations	$	447,945	31.1	%	$	286,628	25.6	%	$	161,317	56.3	%

Gross Profit. Gross profit increased primarily due to higher sales volume, as well as a 170 basis point increase in the gross profit margin. The increase in the gross profit margin was primarily due to the benefit of volume leverage and price increases in our CAG Diagnostics recurring revenue portfolio, and strong growth in veterinary software, services and diagnostic imaging systems. These favorable factors were partially offset by product mix with higher CAG Diagnostics instrument revenue, as well as an impairment of rental assets in certain regions. The impact from foreign currency movements increased the gross profit margin by less than 10 basis points, including the impact of hedge losses in the current year compared to hedge gains in the prior year.

Operating Expenses. Overall operating expenses were higher compared to the first half of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing expense increased primarily due to higher personnel-related costs, including investments in our global commercial capability, partially offset by lower travel costs. General and administrative expense increased primarily due to higher personnel-related costs, partially offset by an increase in the bad debt reserve during the first quarter of 2020. Research and development expense increased primarily due to increased project and personnel-related costs. The overall change in currency exchange rates resulted in an increase in operating expenses by approximately 2%.

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Water

The following table presents the Water segment results of operations:

	For the Six Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	71,231			$	62,265			$	8,966	14.4	%
Cost of revenue	22,019				17,838				4,181		23.4	%
Gross profit	49,212		69.1	%	44,427		71.4	%	4,785		10.8	%
Operating Expenses:
Sales and marketing	8,457		11.9	%	7,773		12.5	%	684		8.8	%
General and administrative	6,620		9.3	%	6,689		10.7	%	(69)		(1.0)	%
Research and development	2,135		3.0	%	1,825		2.9	%	310		17.0	%
Total operating expenses	17,212		24.2	%	16,287		26.2	%	925		5.7	%
Income from operations	$	32,000	44.9	%	$	28,140	45.2	%	$	3,860	13.7	%

Revenue. The increase in our Water business was primarily a result of recovery in overall testing volumes, including continued improvement in non-compliance testing volume that has been constrained during the COVID-19 pandemic and disruptions in certain compliance testing areas, specifically during the second quarter of the prior year due to social distancing policies, including beach and pool closures, as well as price increases in our Colilert test products and related accessories used in coliform and E. coli testing. The impact of currency movements also increased revenue by 3.7%.

Gross Profit. Gross profit increased due to higher sales volumes despite a 230 basis point decrease in the gross profit margin, which reflected a 120 basis point reduction due to foreign currency movements, including the impact of hedge losses in the current year compared to hedge gains in the prior year. The gross profit margin was further reduced by higher product and distribution costs. These reductions in the gross profit margin were partially offset by the net benefit of price increases.

Operating Expenses. Overall operating expenses were higher compared to the first half of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits and travel costs. Sales and marketing expense increased primarily due to higher personnel-related costs. Research and development expense increased primarily due to higher third-party costs. The overall change in currency exchange rates resulted in an increase in operating expenses of approximately 2%.

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Livestock, Poultry and Dairy 

The following table presents the LPD segment results of operations:

	For the Six Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	72,794			$	66,398			$	6,396	9.6	%
Cost of revenue	26,387				25,247				1,140		4.5	%
Gross profit	46,407		63.8	%	41,151		62.0	%	5,256		12.8	%
Operating Expenses:
Sales and marketing	10,680		14.7	%	9,680		14.6	%	1,000		10.3	%
General and administrative	8,579		11.8	%	8,167		12.3	%	412		5.0	%
Research and development	6,472		8.9	%	5,392		8.1	%	1,080		20.0	%
Total operating expenses	25,731		35.3	%	23,239		35.0	%	2,492		10.7	%
Income from operations	$	20,676	28.4	%	$	17,912	27.0	%	$	2,764	15.4	%

Revenue. The favorable impact of foreign currency movements increased revenue by 5.8%. Excluding the impact of currency, overall revenues increased primarily due to higher demand for diagnostic testing in China, during the first quarter of 2021, and higher bovine testing volumes in Europe and the Americas, as compared to pandemic impacts in the second quarter of the prior year. Beginning in the second quarter of 2021 we saw lower livestock testing volumes in China, as swine herds are rebuilt, pork prices are low, and government requirements change related to live animal imports and livestock infectious disease programs, in comparison to high prior-year demand for African Swine Fever testing. We anticipate these trends will continue to impact our revenues in China during the second half of 2021.

Gross Profit. The increase in gross profit was primarily due to higher sales volumes and a 180 basis point increase in the gross profit margin. The increase in the gross profit margin is primarily due to volume leverage and favorable product mix, partially offset by lower realized prices and the impact from foreign currency movements, which decreased gross profit margin by approximately 100 basis points, including the impact of hedge losses in the current year compared to hedge gains in the prior year.

Operating Expenses. Overall operating expenses were higher compared to the first half of 2020, during which cost containment efforts were implemented in response to the COVID-19 pandemic, including temporary reductions to compensation and benefits, and travel costs. Sales and marketing expense increased primarily due to higher travel and personnel-related costs. General and administrative expenses increased primarily due to higher personnel-related costs, partially offset an increase in the bad debt reserve during the first half of 2020. Research and development expense increased primarily due to higher personnel-related costs and third-party development costs, partially offset by leveraging LPD personnel to support our human COVID testing products. The overall change in currency exchange rates resulted in an increase in operating expenses of approximately 3%.

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Other

The following table presents the Other results of operations:

	For the Six Months Ended June 30,								Change
Results of Operations (dollars in thousands)	2021		Percent of Revenue		2020		Percent of Revenue		Amount		Percentage
Revenues	$	21,462			$	17,169			$	4,293	25.0	%
Cost of revenue	10,651				7,625				3,026		39.7	%
Gross profit	10,811		50.4	%	9,544		55.6	%	1,267		13.3	%
Operating Expenses:
Sales and marketing	1,264		5.9	%	773		4.5	%	491		63.5	%
General and administrative	1,859		8.7	%	2,088		12.2	%	(229)		(11.0	%)
Research and development	1,434		6.7	%	1,790		10.4	%	(356)		(19.9	%)
Total operating expenses	4,557		21.2	%	4,651		27.1	%	(94)		(2.0	%)
Income from operations	$	6,254	29.1	%	$	4,893	28.5	%	$	1,361	27.8	%

Revenue. The increase in revenue was primarily due to our OPTI COVID-19 PCR testing products and services, which were introduced in the second quarter of 2020, as well as higher OPTI Medical consumables. We currently estimate that the future demand for our OPTI COVID-19 PCR testing products and services will be lower than prior periods, although it is difficult to project given the uncertain nature of the COVID-19 pandemic, including the spread of variants, rates of vaccinations, governmental and private institution testing requirements, and alternative suppliers. The impact of currency movements increased revenue by 4.2%.

Gross Profit. The increase in gross profit was primarily due to higher sales volumes of our OPTI COVID-19 PCR testing products and services, primarily in the first quarter of 2021. The gross profit margin decreased 520 basis points primarily due to higher product costs associated with write-downs of excess COVID-19 testing inventory in the second quarter of 2021. The overall change in currency exchange rates had an immaterial impact on gross profit.

Operating Expenses. Sales and marketing expense increased primarily due to higher personnel-related costs associated with our OPTI COVID-19 PCR product and services. General and administrative expense decreased primarily due to lower foreign exchange losses on settlements of foreign currency denominated transactions, as compared to the prior year, for all operating segments, which are reported within our Other segment. Research and development expense decreased primarily due to lower project costs associated with the development of the OPTI COVID-19 PCR test.

Non-Operating Items

Interest Expense. Interest expense was $15.2 million for the six months ended June 30, 2021, as compared to $17.2 million for the same period in the prior year. The decrease in interest expense was primarily the result of lower average debt levels.

Provision for Income Taxes. Our effective income tax rate was 17.3% for the six months ended June 30, 2021, as compared to 18.6% for the six months ended June 30, 2020. The decrease in our effective tax rate as compared to the same period in the prior year, was primarily driven by an overall increase in tax benefits from share-based compensation.

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Liquidity and Capital Resources  

We fund the capital needs of our business through cash on hand, funds generated from operations, proceeds from long-term senior note financings, and amounts available under our Credit Facility. At June 30, 2021, we had $232.1 million of cash and cash equivalents, as compared to $383.9 million on December 31, 2020. Working capital totaled $349.4 million at June 30, 2021, as compared to $480.0 million at December 31, 2020. Additionally, at June 30, 2021, we had remaining borrowing availability of $998.6 million under our $1 billion Credit Facility, with no outstanding borrowings on the Credit Facility. The general availability of funds under our Credit Facility is reduced by $1.4 million for outstanding letters of credit. We believe that, if necessary, we could obtain additional borrowings to fund our growth objectives. We further believe that current cash and cash equivalents, funds generated from operations, and committed borrowing availability will be sufficient to fund our operations, capital purchase requirements, and anticipated growth needs for the next twelve months. We believe that these resources, coupled with our ability, as needed, to obtain additional financing, will also be sufficient to fund our business as currently conducted for the foreseeable future. We may enter into new financing arrangements or refinance or retire existing debt in the future depending on market conditions. Should we require more capital in the U.S. than is generated by our operations, for example to fund significant discretionary activities, we could elect to raise capital in the U.S. through the incurrence of debt or equity issuances, which we may not be able to complete on favorable terms or at all. In addition, these alternatives could result in increased interest expense or other dilution of our earnings.

We manage our worldwide cash requirements considering available funds among all of our subsidiaries. Our foreign cash and marketable securities are generally available without restrictions to fund ordinary business operations outside the U.S. 

The following table presents cash, cash equivalents, and marketable securities held domestically and by our foreign subsidiaries:

Cash, cash equivalents and marketable securities (dollars in millions)	June 30, 2021		December 31, 2020
U.S.	$	94.2	$	248.4
Foreign	137.9		135.5
Total	$	232.1	$	383.9
Total cash, cash equivalents, and marketable securities held in U.S. dollars by our foreign subsidiaries	$	4.9	$	18.0

Of the $232.1 million of cash and cash equivalents held as of June 30, 2021, greater than 99% was held as bank deposits.

The following table presents additional key information concerning working capital: 

	For the Three Months Ended
	June 30, 2021	March 31, 2021	December 31, 2020	September 30, 2020	June 30, 2020
Days sales outstanding(1)	42.2	41.8	42.2	41.5	44.4
Inventory turns(2)	2.1	2.0	2.1	1.9	1.6

(1)     Days sales outstanding represents the average of the accounts receivable balances at the beginning and end of each quarter divided by revenue for that quarter, the result of which is then multiplied by 91.25 days.

(2)     Inventory turns represent inventory-related cost of product revenue for the 12 months preceding each quarter-end divided by the average inventory balances at the beginning and end of each quarter.

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Sources and Uses of Cash 

The following table presents cash provided (used):

	For the Six Months Ended June 30,
(in thousands)	2021		2020		Dollar Change
Net cash provided by operating activities	$	358,377	$	236,013	$	122,364
Net cash used by investing activities	(199,250)		(74,226)		(125,024)
Net cash used by financing activities	(309,868)		(144,630)		(165,238)
Net effect of changes in exchange rates on cash	(1,053)		(2,190)		1,137
Net change in cash and cash equivalents	$	(151,794)	$	14,967	$	(166,761)

Operating Activities. The increase in cash provided by operating activities of $122.4 million was driven primarily by an increase in net income. The following table presents cash flow impacts from changes in operating assets and liabilities: 

	For the Six Months Ended June 30,
(in thousands)	2021		2020		Dollar Change
Accounts receivable	$	(50,721)	$	(57,277)	$	6,556
Inventories	(20,412)		(29,254)		8,842
Accounts payable	3,812		(6,729)		10,541
Deferred revenue	(5,037)		(6,695)		1,658
Other assets and liabilities	(55,162)		4,540		(59,702)
Total change in cash due to changes in operating assets and liabilities	$	(127,520)	$	(95,415)	$	(32,105)

Cash used due to changes in operating assets and liabilities during the six months ended June 30, 2021, as compared to the same period in the prior year, increased by approximately $32.1 million. The increase in use of cash in other assets and liabilities was due to higher income taxes paid in the current year, as compared to the same period in 2020, as the U.S. federal and state payments in the prior year were delayed until the third quarter of 2020 under the COVID-19 stimulus guidance. The use of cash in other assets and liabilities was further increased by higher incentive payments in 2021, as compared to 2020, and higher investments in customer volume commitment programs to support instrument placements, partially offset by higher non-cash operating expenses recorded as accrued liabilities, including employee incentive programs. The increase in cash provided by accounts payable over the same period in the prior-year was due to higher investment activity to support growth in the current period. The increase in cash provided by accounts receivable over the same prior-year period was due to higher growth at the end of the second quarter of 2020, as sales volumes began to rebound at the end of the quarter due to pent-up demand from the beginning of the COVID-19 pandemic, as well as improved aging of accounts receivable in the current period. Cash used to purchase inventory in the current period, as compared to the prior period, was lower primarily due to the timing of inventory payments.

We have historically experienced proportionally lower net cash flows from operating activities during the first quarter and proportionally higher cash flows from operating activities for the remainder of the year driven primarily by payments related to annual employee incentive programs in the first quarter following the year for which the bonuses were earned.

Investing Activities. Cash used by investing activities was $199.3 million for the six months ended June 30, 2021, as compared to $74.2 million for the same period in the prior year. The increase in cash used by investing activities was primarily due to the acquisition of ezyVet, partially offset by lower capital expenditures due to the completion of certain major facilities projects during 2020.

We are increasing our outlook for full year capital spending to a range of $150 million to $160 million for 2021. The projected increase in capital spend will support manufacturing and distribution growth capacity and is expected to include approximately $20 million in real estate purchases.

Financing Activities. Cash used by financing activities was $309.9 million for the six months ended June 30, 2021, as compared to $144.6 million of cash used for the same period in the prior year. The increase in cash used by financing activities was due to an increase in repurchases of our common stock in the current period as compared to the same period in the prior

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year when we suspended repurchases due to the COVID-19 pandemic. During the first six months of 2020, the issuance of senior notes, partly offset by repayments on our Credit Facility provided $32.3 million in cash.

Cash used to repurchase shares of our common stock increased $138.0 million during the six months ended June 30, 2021. We believe that the repurchase of our common stock is a favorable means of returning value to our stockholders, and we also repurchase our stock to offset the dilutive effect of our share-based compensation programs. Repurchases of our common stock may vary depending upon the level of other investing activities and the share price. See Note 11 to the unaudited condensed consolidated financial statements in Part I. Item 1. of this Quarterly Report on Form 10-Q for additional information about our share repurchases.

There was no net activity under our Credit Facility during the six months ended June 30, 2021, as compared to $167.7 million of net repayments in the same period of the prior year. At June 30, 2021, we had no outstanding borrowings under the Credit Facility. The obligations under our Credit Facility may be accelerated upon the occurrence of an event of default under the Credit Facility, which includes customary events of default including payment defaults, defaults in the performance of the affirmative, negative and financial covenants, the inaccuracy of representations or warranties, bankruptcy and insolvency-related defaults, defaults relating to judgments, certain events related to employee pension benefit plans under the Employee Retirement Income Security Act of 1974 (“ERISA”), the failure to pay specified indebtedness, cross-acceleration to specified indebtedness, and a change of control default.

The Credit Agreement contains affirmative, negative, and financial covenants customary for financings of this type. The negative covenants include restrictions on liens, indebtedness of subsidiaries of the Company, fundamental changes, investments, transactions with affiliates, certain restrictive agreements, and sanctions laws and regulations. The financial covenant is a consolidated leverage ratio test.

As of June 30, 2021, the aggregate principal amounts of two series of our outstanding senior notes will become due and payable over the next twelve months: our 2021 Series A Notes for $50 million, which became due on July 21, 2021, and our 2022 Series A Notes for $75 million, which will be due on February 12, 2022. On July 21, 2021, we paid off our 2021 Series A Notes with cash provided by operations, and we anticipate paying off our 2022 Series A Notes when due and payable with cash provided by operations. Should we elect to prepay any of our senior notes, such aggregate prepayment will include the applicable make-whole amount(s), as defined within the applicable Senior Note Agreements. Additionally, in the event of a change in control of the Company or upon the disposition of certain assets of the Company the proceeds of which are not reinvested (as defined in the Senior Note Agreements), we may be required to prepay all or a portion of the senior notes. The obligations under the senior notes may be accelerated upon the occurrence of an event of default under the applicable Senior Note Agreements, each of which includes customary events of default including payment defaults, defaults in the performance of the affirmative, negative and financial covenants, the inaccuracy of representations or warranties, bankruptcy and insolvency-related defaults, defaults relating to judgments, certain events related to employee pension benefit plans under ERISA, the failure to pay specified indebtedness, and cross-acceleration to specified indebtedness.

Effect of Currency Translation on Cash. The net effect of changes in foreign currency exchange rates is related to changes in exchange rates between the U.S. dollar and the functional currencies of our foreign subsidiaries. These changes will fluctuate for each period presented as the value of the U.S. dollar relative to the value of the foreign currencies changes. A currency’s value depends on many factors, including interest rates and the country’s debt levels and strength of economy.

Off-Balance Sheet Arrangements. We have no off-balance sheet arrangements or variable interest entities, except for letters of credit and third-party guarantees.

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Financial Covenant. The sole financial covenant of our Credit Facility and Senior Note Agreements is a consolidated leverage ratio test that requires our ratio of debt to earnings before interest, taxes, depreciation and amortization, non-recurring transaction expenses incurred in connection with acquisitions, share-based compensation expense, and certain other non-cash losses and charges (“Adjusted EBITDA”) not to exceed 3.5-to-1. At June 30, 2021, we were in compliance with such covenant. The following details our consolidated leverage ratio calculation:

(in thousands)	Twelve months ended
Trailing 12 Months Adjusted EBITDA:	June 30, 2021
Net income attributable to stockholders (as reported)	$	727,848
Interest expense	31,135
Provision for income taxes	105,037
Depreciation and amortization	99,646
Acquisition-related expense	2,054
Share-based compensation expense	34,382
Extraordinary and other non-recurring non-cash charges	5,911
Adjusted EBITDA	$	1,006,013
(in thousands)
Debt to Adjusted EBITDA Ratio:	June 30, 2021
Line of credit	$	—
Current and long-term portions of long-term debt	905,061
Total debt	905,061
Acquisition-related contingent consideration payable	6,608
Financing leases	19
Deferred financing costs	573
Gross debt	$	912,261
Gross debt to Adjusted EBITDA ratio	0.91
Less: Cash and cash equivalents	$	232,134
Net debt	$	680,127
Net debt to Adjusted EBITDA ratio	0.68

Adjusted EBITDA, gross debt, net debt, gross debt to Adjusted EBITDA ratio and net debt to Adjusted EBITDA ratio are non-GAAP financial measures which should be considered in addition to, and not as a replacement for, financial measures presented according to U.S. GAAP. Management believes that reporting these non-GAAP financial measures provides supplemental analysis to help investors further evaluate our business performance and available borrowing capacity under our Credit Facility. 

Other Commitments, Contingencies and Guarantees 

Significant commitments, contingencies and guarantees at June 30, 2021, are described in Note 15 to the unaudited condensed consolidated financial statements in Part I. Item 1. of this Quarterly Report on Form 10-Q.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk 

For quantitative and qualitative disclosures about market risk affecting us, see the section under the heading “Part II. Item 7A. Quantitative and Qualitative Disclosure About Market Risk” of our 2020 Annual Report. As of the date of this Quarterly Report on Form 10-Q, there have been no material changes to the market risks described in our 2020 Annual Report, except for the impact of foreign exchange rates, as discussed below. 

Foreign Currency Exchange Impacts. Approximately 22% and 23% of our consolidated revenue was derived from products manufactured in the U.S. and sold internationally in local currencies for the three and six months ended June 30, 2021, respectively, as compared to 20% and 21% for the three and six months ended June 30, 2020, respectively. Strengthening of the U.S. dollar exchange rate relative to other currencies has a negative impact on our revenues derived in currencies other than the U.S. dollar and on profits of products manufactured in the U.S. and sold internationally, and a weakening of the U.S. dollar has the opposite effect. Similarly, to the extent that the U.S. dollar is stronger in current or future periods relative to the exchange rates in effect in the corresponding prior periods, our growth rate will be negatively affected. The impact of foreign currency denominated costs and expenses and foreign currency denominated supply contracts partly offsets this exposure. Additionally, our designated hedges of intercompany inventory purchases and sales help delay the impact of certain exchange rate fluctuations on non-U.S. dollar denominated revenues.

Our foreign currency exchange impacts are comprised of three components: 1) local currency revenues and expenses; 2) the impact of hedge contracts; and 3) intercompany and monetary balances for our subsidiaries that are denominated in a currency that is different from the functional currency used by each subsidiary. Based on projected revenues and expenses for the remainder of 2021, excluding the impact of intercompany and trade balances denominated in currencies other than the functional subsidiary currencies, we project a 1% strengthening of the U.S. dollar would reduce revenue by approximately $6 million and operating income by approximately $3 million. Additionally, we project our foreign currency hedge contracts in place as of June 30, 2021, would result in incremental offsetting gains of approximately $1 million. The impact of the intercompany and trade balances, and monetary balances referred to in the third component above have been excluded, as they are transacted at multiple times during the year and we are not able to reliably forecast the impact that changes in exchange rates would have on such balances.

At our current foreign currency exchange rate assumptions, we anticipate the effect of a weaker U.S. dollar for the remainder of the year will have a favorable impact on our operating results by increasing our revenues, operating profit, and diluted earnings per share for the remainder of the year ending December 31, 2021, by approximately $4 million, $1 million, and $0.01 per share, respectively. This favorable currency impact includes foreign currency hedging activity, which is expected to decrease total Company operating profit by less than $0.5 million and no impact to diluted earnings for the remainder of the year ended December 31, 2021. The actual impact of changes in the value of the U.S. dollar against foreign currencies in which we transact may materially differ from our expectations described above. The above estimates assume that the value of the U.S. dollar will reflect the euro at 1.17, the British pound at 1.37, the Canadian dollar at 0.79, and the Australian dollar at 0.73; and the Japanese yen at ¥112, the Chinese renminbi at RMB 6.56 and the Brazilian real at R$5.33 relative to the U.S. dollar for the remainder of 2021.

51

The following table presents the estimated foreign currency exchange impact on our revenues, operating profit, and diluted earnings per share for the current period and as compared to the respective prior-year period:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(in thousands, except per share amounts)	2021		2020		2021		2020
Revenue impact	$	25,280	$	(7,493)	$	44,714	$	(14,050)
Operating profit impact, excluding hedge activity and exchange impacts on settlement of foreign currency denominated transactions	$	14,169	$	(4,275)	$	25,930	$	(6,609)
Hedge (losses) gains - current period	(2,715)		1,812		(5,145)		3,153
Exchange (losses) gains on settlements of foreign currency denominated transactions - current period	(854)		799		(924)		(1,108)
Operating profit impact - current period	$	10,600	$	(1,664)	$	19,861	$	(4,564)
Hedge (gains) - prior period	(1,812)		(2,509)		(3,153)		(3,920)
Exchange (gains) losses on settlement of foreign currency denominated transactions - prior period	(799)		318		1,108		541
Operating profit impact - as compared to prior period	$	7,989	$	(3,855)	$	17,816	$	(7,943)
Diluted earnings per share impact - as compared to prior period	$	0.07	$	(0.04)	$	0.16	$	(0.07)

52

Item 4. Controls and Procedures 

Disclosure Controls and Procedures 

Our management is responsible for establishing and maintaining disclosure controls and procedures, as defined by the SEC in its Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 as amended (the “Exchange Act”). The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of an issuer that are designed to ensure that information required to be disclosed by the issuer in the reports that it files or submits under the Exchange Act are recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures at June 30, 2021, our Chief Executive Officer and our Chief Financial Officer have concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.  

Changes in Internal Control Over Financial Reporting 

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the three months ended June 30, 2021, that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 

PART II — OTHER INFORMATION 

Item 1. Legal Proceedings

Due to the nature of our activities, we are at times subject to pending and threatened legal actions that arise out of the ordinary course of business. In the opinion of management, based in part upon advice of legal counsel, the disposition of any such currently pending matters is not expected to have a material effect on our results of operations, financial condition, or cash flows. However, the results of legal actions cannot be predicted with certainty. Therefore, it is possible that our results of operations, financial condition, or cash flows could be materially adversely affected in any particular period by the unfavorable resolution of one or more legal actions.

Item 1A. Risk Factors 

In addition to the other information set forth in this Quarterly Report on Form 10-Q, you should carefully consider the risk factors discussed in “Part I. Item 1A. Risk Factors” in our 2020 Annual Report, which could materially affect our business, financial condition, or future results. There have been no material changes from the risk factors previously disclosed in the 2020 Annual Report. The risks described in our 2020 Annual Report are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition, or future results.

53

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 

During the three months ended June 30, 2021, we repurchased shares of common stock as described below:  

Period	Total Number of Shares Purchased (a)		Average Price Paid per Share (b)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (1) (c)	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (1) (d)
April 1 to April 30, 2021	88,100		$	524.31	88,100	5,910,283
May 1 to May 31, 2021	126,974		$	534.50	126,974	5,783,309
June 1 to June 30, 2021	126,204		$	588.87	126,199	5,657,110
Total	341,278	(2)	$	551.98	341,273	5,657,110

The total shares repurchased include shares surrendered for employee statutory tax withholding. See Note 11 to the unaudited condensed consolidated financial statements in Part I. Item 1. of this Quarterly Report on Form 10-Q for additional information about our share repurchases.

(1)On August 13, 1999, our Board of Directors approved and announced the repurchase of our common stock in the open market or in negotiated transactions pursuant to the Company’s share repurchase program. The authorization has been increased by the Board of Directors on numerous occasions; most recently, on February 12, 2020, the maximum level of shares that may be repurchased under the program was increased from 68 million to 73 million shares. There is no specified expiration date for this share repurchase program. There were no other repurchase programs outstanding during the three months ended June 30, 2021, and no share repurchase programs expired during the period. There were 341,273 share repurchases made during the three months ended June 30, 2021, in transactions made pursuant to our share repurchase program.

(2)During the three months ended June 30, 2021, we received 5 shares of our common stock that were surrendered by employees in payment for the minimum required withholding taxes due on the vesting of restricted stock units and settlement of deferred stock units. In the above table, these shares are included in columns (a) and (b), but excluded from columns (c) and (d). These shares do not reduce the number of shares that may yet be purchased under the share repurchase program.

54

Item 6. Exhibits 

Exhibit No.	Description
31.1	Certification of Principal Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Principal Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following financial and related information from IDEXX Laboratories, Inc.’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, formatted in Inline eXtensible Business Reportable Language (iXBRL) includes: (i) the Condensed Consolidated Balance Sheet; (ii) the Condensed Consolidated Statement of Income; (iii) the Condensed Consolidated Statements of Comprehensive Income; (iv) the Condensed Consolidated Statement of Changes in Stockholders' Equity; (v) the Condensed Consolidated Statement of Cash Flows; and, (vi) Notes to Consolidated Financial Statements.
104	The cover page from the Company's Quarterly Report of Form 10-Q for the quarter ended June 30, 2021, formatted in Inline XBRL and contained in Exhibit 101.

55

SIGNATURES 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. 

	IDEXX LABORATORIES, INC.
	/s/ Brian P. McKeon
Date: July 30, 2021	Brian P. McKeon
	Executive Vice President, Chief Financial Officer and Treasurer
	(Principal Financial Officer)

56

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Jonathan J. Mazelsky, certify that:

1)I have reviewed this report on Form 10-Q for the quarter ended June 30, 2021 of IDEXX Laboratories, Inc.;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report, based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 30, 2021	/s/ Jonathan J. Mazelsky
	Jonathan J. Mazelsky
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Brian P. McKeon, certify that:

1)I have reviewed this report on Form 10-Q for the quarter ended June 30, 2021 of IDEXX Laboratories, Inc.;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report, based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 30, 2021	/s/ Brian P. McKeon
	Brian P. McKeon
	Executive Vice President, Chief Financial Officer and Treasurer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the report on Form 10-Q of IDEXX Laboratories, Inc. (the “Company”) for the quarter ended June 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Jonathan J. Mazelsky
July 30, 2021	Jonathan J. Mazelsky President and Chief Executive Officer

A signed original of this written statement required by Section 906, has been provided to IDEXX Laboratories, Inc. and will be retained by IDEXX Laboratories, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the report on Form 10-Q of IDEXX Laboratories, Inc. (the “Company”) for the quarter ended June 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Brian P. McKeon
July 30, 2021	Brian P. McKeon Executive Vice President, Chief Financial Officer and Treasurer

A signed original of this written statement required by Section 906, has been provided to IDEXX Laboratories, Inc. and will be retained by IDEXX Laboratories, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	6 Months Ended
	Jun. 30, 2021	Jul. 26, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	000-19271
Entity Registrant Name	IDEXX LABORATORIES INC /DE
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0393723
Entity Address, Address Line One	One IDEXX Drive
Entity Address, City or Town	Westbrook
Entity Address, State or Province	ME
Entity Address, Postal Zip Code	04092
City Area Code	207
Local Phone Number	556-0300
Title of 12(b) Security	Common Stock, $0.10 par value per share
Trading Symbol	IDXX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Outstanding (in shares)		85,075,932
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000874716
Current Fiscal Year End Date	--12-31

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 232,134	$ 383,928
Accounts receivable, net	382,308	331,429
Inventories	241,392	209,873
Other current assets	145,392	137,508
Total current assets	1,001,226	1,062,738
Long-Term Assets:
Property and equipment, net	550,255	555,167
Operating lease right-of-use assets	104,723	91,171
Goodwill	353,842	243,347
Intangible assets, net	96,757	52,543
Other long-term assets	305,346	289,595
Total long-term assets	1,410,923	1,231,823
TOTAL ASSETS	2,412,149	2,294,561
Current Liabilities:
Accounts payable	93,016	74,558
Accrued liabilities	392,681	415,648
Current portion of long-term debt	124,982	49,988
Current portion of deferred revenue	41,130	42,567
Total current liabilities	651,809	582,761
Long-Term Liabilities:
Deferred income tax liabilities	15,469	11,707
Long-term debt, net of current portion	780,079	858,492
Long-term deferred revenue, net of current portion	43,196	46,163
Long-term operating lease liabilities	88,330	77,039
Other long-term liabilities	85,043	85,604
Total long-term liabilities	1,012,117	1,079,005
Total liabilities	1,663,926	1,661,766
Commitments and Contingencies (Note 15)
Stockholders’ Equity:
Common stock, $0.10 par value: Authorized: 120,000 shares; Issued:106,748 shares in 2021 and 106,457 shares in 2020; Outstanding: 85,096 shares in 2021 and 85,449 shares in 2020	10,675	10,646
Additional paid-in capital	1,339,413	1,294,849
Deferred stock units: Outstanding: 90 units in 2021 and 87 units in 2020	5,630	4,503
Retained earnings	2,582,434	2,175,595
Accumulated other comprehensive loss	(48,391)	(53,615)
Treasury stock, at cost: 21,653 shares in 2021 and 21,008 shares in 2020	(3,142,301)	(2,799,890)
Total IDEXX Laboratories, Inc. stockholders’ equity	747,460	632,088
Noncontrolling interest	763	707
Total stockholders’ equity	748,223	632,795
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,412,149	$ 2,294,561

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, par value (in USD per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	106,748,000	106,457,000
Common stock, shares outstanding (in shares)	85,096,000	85,449,000
Deferred stock units, outstanding (in shares)	90,000	87,000
Treasury stock, shares (in shares)	21,653,000	21,008,000

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 826,142	$ 637,592	$ 1,603,849	$ 1,263,928
Cost of Revenue:
Total cost of revenue	336,834	258,250	643,759	524,996
Gross profit	489,308	379,342	960,090	738,932
Expenses:
Sales and marketing	119,032	94,181	233,843	210,324
General and administrative	73,326	60,268	144,096	126,080
Research and development	37,697	31,645	75,276	64,955
Income from operations	259,253	193,248	506,875	337,573
Interest expense	(7,613)	(9,495)	(15,197)	(17,187)
Interest income	91	69	143	209
Income before provision for income taxes	251,731	183,822	491,821	320,595
Provision for income taxes	49,125	34,826	84,926	59,743
Net income	202,606	148,996	406,895	260,852
Less: Net income attributable to noncontrolling interest	24	56	56	85
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 202,582	$ 148,940	$ 406,839	$ 260,767
Earnings per Share:
Basic (in USD per share)	$ 2.37	$ 1.75	$ 4.76	$ 3.06
Diluted (in USD per share)	$ 2.34	$ 1.72	$ 4.69	$ 3.01
Weighted Average Shares Outstanding:
Basic (in shares)	85,325	85,134	85,427	85,282
Diluted (in shares)	86,654	86,402	86,794	86,568
Product revenue
Revenue:
Total revenue	$ 480,715	$ 366,058	$ 935,063	$ 730,831
Cost of Revenue:
Total cost of revenue	169,832	124,024	317,102	249,478
Service revenue
Revenue:
Total revenue	345,427	271,534	668,786	533,097
Cost of Revenue:
Total cost of revenue	$ 167,002	$ 134,226	$ 326,657	$ 275,518

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 202,606	$ 148,996	$ 406,895	$ 260,852
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	12,087	7,006	(7,246)	(15,200)
Unrealized gain (loss) on Euro-denominated notes, net of tax expense (benefit) of $(313) and $837 in 2021 and $(532) and $(202) in 2020	(994)	(1,689)	2,654	(642)
Unrealized gain (loss) on investments, net of tax expense (benefit) of $2 and $48 in 2021 and $(93) and $(181) in 2020	7	(295)	154	(574)
Unrealized gain (loss) on derivative instruments:
Unrealized gain (loss) on foreign currency exchange contracts, net of tax expense (benefit) of $(594) and $655 in 2021 and $(805) and $1,247 in 2020	(1,224)	(3,888)	3,191	5,538
Unrealized gain (loss) on cross currency swaps, net of tax expense (benefit) of $(349) and $694 in 2021 and $(283) and $586 in 2020	(1,106)	(1,447)	2,202	2,602
Reclassification adjustment for loss (gain) included in net income, net of tax benefit (expense) of $340 and $876 in 2021 and $(339) and $(579) in 2020	2,375	(1,473)	4,269	(2,574)
Unrealized gain (loss) on derivative instruments	45	(6,808)	9,662	5,566
Other comprehensive gain (loss), net of tax	11,145	(1,786)	5,224	(10,850)
Comprehensive income	213,751	147,210	412,119	250,002
Less: Comprehensive income attributable to noncontrolling interest	24	56	56	85
Comprehensive income attributable to IDEXX Laboratories, Inc.	$ 213,727	$ 147,154	$ 412,063	$ 249,917

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on Euro-denominated notes, tax expense (benefit)	$ (313)	$ (532)	$ 837	$ (202)
Unrealized gain (loss) on investments, tax expense (benefit)	2	(93)	48	(181)
Unrealized gain (loss) on foreign currency exchange contracts, tax expense (benefit)	(594)	(805)	655	1,247
Unrealized gain (loss) on cross currency swaps, tax expense (benefit)	(349)	(283)	694	586
Reclassification adjustment for loss (gain) included in net income, tax benefit (benefit)	$ 340	$ (339)	$ 876	$ (579)

XML

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative effect of accounting changes	Common Stock	Additional Paid-in Capital	Deferred Stock Units	Retained Earnings	Retained Earnings Cumulative effect of accounting changes	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interest
Balance beginning of period (in shares) at Dec. 31, 2019			105,711
Balance beginning of period at Dec. 31, 2019	$ 177,825	$ (1,829)	$ 10,571	$ 1,213,517	$ 4,462	$ 1,595,648	$ (1,829)	$ (46,182)	$ (2,600,543)	$ 352
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	111,856					111,827				29
Other comprehensive income (loss), net	(9,064)							(9,064)
Repurchases of common stock	(187,767)								(187,767)
Common stock issued under stock plans (in shares)			203
Common stock issued under stock plans	9,750		$ 20	9,730
Share-based compensation cost	7,284			7,238	46
Balance end of period (in shares) at Mar. 31, 2020			105,914
Balance end of period at Mar. 31, 2020	108,055		$ 10,591	1,230,485	4,508	1,705,646		(55,246)	(2,788,310)	381
Balance beginning of period (in shares) at Dec. 31, 2019			105,711
Balance beginning of period at Dec. 31, 2019	177,825	$ (1,829)	$ 10,571	1,213,517	4,462	1,595,648	$ (1,829)	(46,182)	(2,600,543)	352
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	260,852
Other comprehensive income (loss), net	(10,850)
Balance end of period (in shares) at Jun. 30, 2020			106,031
Balance end of period at Jun. 30, 2020	273,400		$ 10,603	1,247,456	5,402	1,854,586		(57,032)	(2,788,052)	437
Balance beginning of period (in shares) at Mar. 31, 2020			105,914
Balance beginning of period at Mar. 31, 2020	108,055		$ 10,591	1,230,485	4,508	1,705,646		(55,246)	(2,788,310)	381
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	148,996					148,940				56
Other comprehensive income (loss), net	(1,786)							(1,786)
Issuance of common stock	258								258
Common stock issued under stock plans (in shares)			117
Common stock issued under stock plans	10,080		$ 12	10,068	0
Deferred stock units activity	0			(894)	894
Share-based compensation cost	7,797			7,797	0
Balance end of period (in shares) at Jun. 30, 2020			106,031
Balance end of period at Jun. 30, 2020	$ 273,400		$ 10,603	1,247,456	5,402	1,854,586		(57,032)	(2,788,052)	437
Balance beginning of period (in shares) at Dec. 31, 2020	106,457		106,457
Balance beginning of period at Dec. 31, 2020	$ 632,795		$ 10,646	1,294,849	4,503	2,175,595		(53,615)	(2,799,890)	707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	204,289					204,257				32
Other comprehensive income (loss), net	(5,921)							(5,921)
Repurchases of common stock	(154,033)								(154,033)
Common stock issued under stock plans (in shares)			219
Common stock issued under stock plans	17,430		$ 22	17,408
Share-based compensation cost	8,875			8,829	46
Balance end of period (in shares) at Mar. 31, 2021			106,676
Balance end of period at Mar. 31, 2021	$ 703,435		$ 10,668	1,321,086	4,549	2,379,852		(59,536)	(2,953,923)	739
Balance beginning of period (in shares) at Dec. 31, 2020	106,457		106,457
Balance beginning of period at Dec. 31, 2020	$ 632,795		$ 10,646	1,294,849	4,503	2,175,595		(53,615)	(2,799,890)	707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	406,895
Other comprehensive income (loss), net	$ 5,224
Balance end of period (in shares) at Jun. 30, 2021	106,748		106,748
Balance end of period at Jun. 30, 2021	$ 748,223		$ 10,675	1,339,413	5,630	2,582,434		(48,391)	(3,142,301)	763
Balance beginning of period (in shares) at Mar. 31, 2021			106,676
Balance beginning of period at Mar. 31, 2021	703,435		$ 10,668	1,321,086	4,549	2,379,852		(59,536)	(2,953,923)	739
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	202,606					202,582				24
Other comprehensive income (loss), net	11,145							11,145
Repurchases of common stock	(188,378)								(188,378)
Common stock issued under stock plans (in shares)			72
Common stock issued under stock plans	9,778		$ 7	9,771
Deferred stock units activity	0			(1,035)	1,035
Share-based compensation cost	$ 9,637			9,591	46
Balance end of period (in shares) at Jun. 30, 2021	106,748		106,748
Balance end of period at Jun. 30, 2021	$ 748,223		$ 10,675	$ 1,339,413	$ 5,630	$ 2,582,434		$ (48,391)	$ (3,142,301)	$ 763

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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Common stock, par value (in USD per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows from Operating Activities:
Net income	$ 406,895	$ 260,852
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,434	46,786
Impairment charge	3,795	0
Provision for credit losses	768	5,352
Deferred income taxes	4,193	2,658
Share-based compensation expense	18,512	15,081
Other	1,300	699
Changes in assets and liabilities:
Accounts receivable	(50,721)	(57,277)
Inventories	(20,412)	(29,254)
Other assets and liabilities	(55,162)	4,540
Accounts payable	3,812	(6,729)
Deferred revenue	(5,037)	(6,695)
Net cash provided by operating activities	358,377	236,013
Cash Flows from Investing Activities:
Purchases of property and equipment	(42,744)	(73,558)
Acquisition of intangible assets and equity investment	0	(668)
Acquisitions of a business, net of cash acquired	(156,506)	0
Net cash used by investing activities	(199,250)	(74,226)
Cash Flows from Financing Activities:
Repayments on revolving credit facilities, net	0	(167,692)
Issuance of senior debt	0	200,000
Debt issuance costs	0	(4,988)
Payments of acquisition-related contingent considerations and holdbacks	(1,500)	(1,080)
Repurchases of common stock, net	(320,787)	(182,815)
Proceeds from exercises of stock options and employee stock purchase plans	27,371	20,613
Shares withheld for statutory tax withholding on restricted stock	(14,952)	(8,668)
Net cash used by financing activities	(309,868)	(144,630)
Net effect of changes in exchange rates on cash	(1,053)	(2,190)
Net (decrease) increase in cash and cash equivalents	(151,794)	14,967
Cash and cash equivalents at beginning of period	383,928	90,326
Cash and cash equivalents at end of period	232,134	105,293
Supplemental Cash Flow Information:
Cash paid for income taxes	81,923	29,983
Unpaid property and equipment, reflected in accounts payable and accrued liabilities	$ 9,676	$ 12,670

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Basis of Presentation and Principles of Consolidation

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Principles of Consolidation

BASIS OF PRESENTATION AND PRINCIPLES OF CONSOLIDATION 

The accompanying unaudited condensed consolidated financial statements of IDEXX Laboratories, Inc. and its subsidiaries have been prepared in accordance with U.S. GAAP for interim financial information and with the requirements of Regulation S-X, Rule 10-01 for financial statements required to be filed as a part of this Quarterly Report on Form 10-Q. Unless the context requires otherwise, references in this Quarterly Report on Form 10-Q to “IDEXX,” the “Company,” “we,” “our,” or “us” refer to IDEXX Laboratories, Inc. and its subsidiaries.

The accompanying unaudited condensed consolidated financial statements include the accounts of IDEXX Laboratories, Inc. and our wholly-owned and majority-owned subsidiaries. We do not have any variable interest entities for which we are the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation.

The accompanying unaudited condensed consolidated financial statements reflect, in the opinion of our management, all adjustments necessary for a fair statement of our financial position and results of operations. All such adjustments are of a recurring nature. The consolidated balance sheet data at December 31, 2020, was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. The results of operations for the three and six months ended June 30, 2021, are not necessarily indicative of the results to be expected for the full year or any future period. These unaudited condensed consolidated financial statements should be read in conjunction with this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, and our Annual Report on Form 10-K for the year ended December 31, 2020, (the “2020 Annual Report”) filed with the SEC.

The preparation of our condensed consolidated financial statements requires us to make estimates, judgments, and assumptions that may affect the reported amounts of assets, liabilities, equity, revenues, and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis we evaluate our estimates, judgments, and methodologies. We base our estimates on historical experience and on various other assumptions that we believe are reasonable, the results of which form the basis for making judgments about the carrying values of assets, liabilities and equity, and the amount of revenues and expenses.

We have included certain terms and abbreviations used throughout this Quarterly Report on Form 10-Q in the “Glossary of Terms and Selected Abbreviations.”

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Accounting Policies

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Accounting Policies

ACCOUNTING POLICIES  

Significant Accounting Policies

The significant accounting policies used in preparation of these unaudited condensed consolidated financial statements as of and for the three and six months ended June 30, 2021, are consistent with those discussed in Note 2. Summary of Significant Accounting Policies to the consolidated financial statements in our 2020 Annual Report, except as noted below.

New Accounting Pronouncements Adopted

Effective January 1, 2021, we adopted ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” The new guidance is intended to simplify the accounting for income taxes by removing certain exceptions and by updating accounting requirements around goodwill recognized for tax purposes and the allocation of current and deferred tax expense among legal entities, among other minor changes. The adoption of ASU 2019-12 did not have a material impact on our consolidated financial statements.

New Accounting Pronouncements Not Yet Adopted

In July 2021, the FASB issued ASU 2021-05, “Leases (Topic 842); Lessors - Certain Leases with Variable Lease Payments.” ASU 2021-05 requires a lessor to classify a lease with variable payments that do not depend on an index or rate as an operating lease if another lease classification (i.e., sales-type or direct financing) would result in recognition of a day-one loss. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, and earlier adoption is permitted. We have elected to adopt this

standard as of July 1, 2021, on a prospective basis. We do not expect the adoption of ASU 2021-05 to have a material impact on our consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU 2020-04 is intended to provide optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The relief offered by this guidance, if adopted, is available to companies for the period March 12, 2020 through December 31, 2022. We do not expect the discontinuation of LIBOR to have a material impact on our consolidated financial statements.

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Revenue Recognition

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

REVENUE RECOGNITION

Our revenue is recognized when, or as, performance obligations under the terms of a contract are satisfied, which occurs when control of the promised products or services is transferred to a customer. We exclude sales, use, value-added, and other taxes we collect on behalf of third parties from revenue. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products or services to a customer. To accurately present the consideration received in exchange for promised products or services, we apply the five-step model outlined below:

1.Identification of a contract or agreement with a customer

2.Identification of our performance obligations in the contract or agreement

3.Determination of the transaction price

4.Allocation of the transaction price to the performance obligations

5.Recognition of revenue when, or as, we satisfy a performance obligation        

We enter into contracts that can include various combinations of products and services, which are generally capable of being distinct and accounted for as separate performance obligations. The timing of revenue recognition, billings, and cash collections results in accounts receivable, contract assets and lease receivables as a result of revenue recognized in advance of billings (included within other assets), and contract liabilities or deferred revenue as a result of receiving consideration in advance of revenue recognition within our unaudited condensed consolidated balance sheet. Our general payment terms range from 30 to 60 days, with exceptions in certain geographies. Below is a listing of our major categories of revenue for our products and services:

Diagnostic Products and Accessories. Diagnostic products and accessories revenues, including IDEXX VetLab® consumables and accessories, rapid assay, LPD, Water, and OPTI testing products, are predominantly recognized and invoiced at the time of shipment, which is when the customer obtains control of the product based on legal title transfer and we have the right to payment. Shipping costs reimbursed by the customer are included in revenue and cost of sales. As a practical expedient, we do not account for shipping activities as a separate performance obligation.

Reference Laboratory Diagnostic and Consulting Services. Reference laboratory revenues are recognized and invoiced when the laboratory diagnostic service is performed.

Instruments, Software and Systems. CAG Diagnostics capital instruments, veterinary software and diagnostic imaging systems revenues are recognized and invoiced when the customer obtains control of the products based on legal title transfer and we have the right to payment, which generally occurs at the time of installation and customer acceptance. Our instruments, software, and systems are often included in one of our significant customer programs, as further described below. For veterinary software systems that include multiple performance obligations, such as perpetual software licenses and computer hardware, we allocate revenue to each performance obligation based on estimates of the price that we would charge the customer for each promised product or service if it were sold on a standalone basis.

Lease Revenue. Revenues from instrument rental agreements and reagent rental programs are recognized either as operating leases on a ratable basis over the term of the agreement or as sales-type leases at the time of installation and customer acceptance. Customers typically pay for the right to use instruments under rental agreements in equal monthly amounts over the term of the rental agreement. Our reagent rental programs provide our customers the right to use our instruments upon entering into agreements to purchase specified amounts of consumables, which are considered embedded leases. For some agreements, the customers are provided with the right to purchase the instrument at the end of the lease term. Lease revenues from these agreements are presented in product revenue on our unaudited condensed consolidated income statement. Lease revenue was approximately $4.7 million and $9.5 million for the three and six months ended June 30, 2021, respectively, as compared to $3.5 million and $7.7 million for the three and six months ended June 30, 2020, respectively, including both operating leases

and sales-type leases under ASC 842, Leases, for leases entered into after January 1, 2019, and ASC 840, Leases, for leases entered into prior to 2019. See below for revenue recognition under our reagent rental programs.

Extended Warranties and Post-Contract Support. CAG Diagnostics capital instruments and diagnostic imaging systems extended warranties typically provide customers with continued coverage for a period of one to five years beyond the first-year standard warranty. Customers can either pay in full for the extended warranty at the time of instrument or system purchase or can be billed on a quarterly basis over the term of the contract. We recognize revenue associated with extended warranties over time on a ratable basis using a time elapsed measure of performance over the contract term, which approximates the expected timing in which applicable services are performed.

Veterinary software post-contract support provides customers with access to technical support when and as needed through access to call centers and online customer assistance. Post-contract support contracts typically have a term of 12 months and customers are billed for post-contract support in equal quarterly amounts over the term. We recognize revenue for post-contract support services over time on a ratable basis using a time elapsed measure of performance over the contract term, which approximates the expected timing in which applicable services are performed.

On December 31, 2020, our deferred revenue related to extended warranties and post-contract support was $35.1 million, of which approximately $3.1 million and $18.0 million was recognized during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new agreements, our deferred revenue related to extended warranties and post-contract support was $32.2 million at June 30, 2021. We do not disclose information about remaining performance obligations that are part of contracts with an original expected duration of one year or less and do not adjust for the effect of the financing components when the period between customer payment and revenue recognition is one year or less. Deferred revenue related to extended warranties and post-contract support with an original duration of more than one year was $18.5 million at June 30, 2021, of which approximately 27%, 38%, 21%, 9%, and 5% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. Additionally, we have determined these agreements do not include a significant financing component.

SaaS Subscriptions. We offer a variety of veterinary software and diagnostic imaging SaaS subscriptions including IDEXX Neo®, Animana®, Pet Health Network® Pro, Petly® Plans, Web PACS, rVetLink®, Smart Flow™, and ezyVet®. We recognize revenue for our SaaS subscriptions over time on a ratable basis over the contract term, beginning on the date our service is made available to the customer. Our subscription contracts vary in term from monthly to two years. Customers typically pay for our subscription contracts in equal monthly amounts over the term of the agreement. Deferred revenue related to our SaaS subscriptions is not material.

Contracts with Multiple Performance Obligations. We enter into contracts where customers purchase a combination of IDEXX products and services. Determining whether products and services are considered distinct performance obligations that should be accounted for separately requires significant judgment. We determine the transaction price for a contract based on the consideration we expect to receive in exchange for the transferred goods or services. To the extent the transaction price includes variable consideration, such as volume rebates or expected price adjustments, we apply judgment in constraining the estimated variable consideration due to factors that may cause reversal of revenue recognized. We evaluate constraints based on our historical and projected experience with similar customer contracts.

We allocate revenue to each performance obligation in proportion to the relative standalone selling prices and recognize revenue when transfer of the related goods or services has occurred for each obligation. We utilize the observable standalone selling price when available, which represents the price charged for the performance obligation when sold separately. When standalone selling prices for our products or services are not directly observable, we determine the standalone selling prices using relevant information available and apply suitable estimation methods including, but not limited to, the cost plus a margin approach. We recognize revenue as each performance obligation is satisfied, either at a point in time or over time, as described in the revenue categories above. We do not disclose information about remaining performance obligations that are part of contracts with an original expected duration of one year or less.

The following customer programs represent our most significant customer contracts which contain multiple performance obligations:

Customer Commitment Programs. We offer customer incentives upon entering into multi-year agreements to purchase annual minimum amounts of products and services.

Up-Front Customer Loyalty Programs. Our up-front loyalty programs provide customers with incentives in the form of cash payments or IDEXX Points upon entering into multi-year agreements to purchase annual minimum amounts of future products or services. If a customer breaches its agreement, they are required to refund all or a portion of the up-front cash or IDEXX Points, or make other repayments, remedial actions, or both. Up-front incentives to customers in the form of cash or IDEXX Points are not made in exchange for distinct goods or services and are capitalized as customer acquisition costs within other current and long-term assets, which are subsequently recognized as a reduction to revenue over the term of the customer agreement. If these up-front incentives are subsequently utilized to purchase instruments, we allocate total consideration, including future committed purchases less up-front incentives and estimates of expected price adjustments, based on relative standalone selling prices to identified performance obligations and recognize instrument revenue and cost at the time of installation and customer acceptance. To the extent invoiced instrument revenue exceeds recognized instrument revenue, we record deferred revenue as a contract liability, which is subsequently recognized upon the purchase of future products and services. We have determined these agreements do not include a significant financing component. Differences between estimated and actual customer purchases may impact the amount and timing of revenue recognition.

On December 31, 2020, our capitalized customer acquisition costs were $148.1 million, of which approximately $11.1 million and $22.6 million was recognized as a reduction of revenue during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new up-front customer loyalty payments, net of subsequent recognition, our capitalized customer acquisition costs were $155.3 million at June 30, 2021. We monitor customer purchases over the term of their agreement to assess the realizability of our capitalized customer acquisition costs and review estimates of variable consideration. Impairments, revenue adjustments that relate to performance obligations satisfied in prior periods, and contract modifications during the three and six months ended June 30, 2021, were not material.

Volume Commitment Programs. Our volume commitment programs, such as our IDEXX 360 program, provide customers with a free or discounted instrument or system upon entering into multi-year agreements to purchase annual minimum amounts of products and services. We allocate total consideration, including future committed purchases and expected price adjustments, based on relative standalone selling prices to identified performance obligations and recognize instrument revenue and cost at the time of installation and customer acceptance in advance of billing the customer, which is also when the customer obtains control of the instrument based on legal title transfer. Our right to future consideration related to instrument revenue is recorded as a contract asset within other current and long-term assets. The contract asset is transferred to accounts receivable when customers are billed for future products and services over the term of the contract. We have determined these agreements do not include a significant financing component. Differences between estimated and actual customer purchases may impact the amount and timing of revenue recognition.

On December 31, 2020, our volume commitment contract assets were $115.5 million, of which approximately $6.7 million and $13.6 million was reclassified to accounts receivable when customers were billed for related products and services during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new placements under volume commitment programs, net of subsequent amounts reclassified to accounts receivable, and allowances established for credit losses, our contract assets were $134.7 million at June 30, 2021. We monitor customer purchases over the term of their agreement to assess the realizability of our contract assets and review estimates of variable consideration. Impairments, revenue adjustments that relate to performance obligations satisfied in prior periods, and contract modifications during the three and six months ended June 30, 2021, were not material.

For our up-front customer loyalty and volume commitment programs, we estimate future revenues related to multi-year agreements to be approximately $2.5 billion, of which approximately 13%, 25%, 23%, 18%, and 21% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. These future revenues relate to performance obligations not yet satisfied, for which customers have committed to

purchase goods and services, net of the expected revenue reductions from customer acquisition costs and expected price adjustments, and as a result, are lower than stated contractual commitments by our customers.

Instrument Rebate Programs. Our instrument rebate programs require an instrument purchase and provide customers the opportunity to earn future rebates based on the volume of products and services they purchase over the term of the program. We account for the customer’s right to earn rebates on future purchases as a separate performance obligation and determine the standalone selling price based on an estimate of rebates the customer will earn over the term of the program. Total consideration allocated to identified performance obligations is limited to goods and services that the customer is presently obligated to purchase and does not include estimates of future purchases that are optional. We allocate total consideration to identified performance obligations, including the customer’s right to earn rebates on future purchases, which is deferred and recognized upon the purchase of future products and services, offsetting future rebates as they are earned.

On December 31, 2020, our deferred revenue related to instrument rebate programs was $39.3 million, of which approximately $3.6 million and $7.5 million was recognized when customers purchased eligible products and services and earned rebates during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new instrument purchases under rebate programs, net of subsequent recognition, our deferred revenue was $35.4 million at June 30, 2021, of which approximately 21%, 31%, 21%, 13%, and 14% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively.

Reagent Rental Programs. Our reagent rental programs provide our customers the right to use our instruments upon entering into multi-year agreements to purchase annual minimum amounts of consumables. These types of agreements include an embedded lease for the right to use our instrument, and we determine the amount of lease revenue allocated to the instrument based on relative standalone selling prices. We evaluate the terms of these embedded leases to determine classification as either a sales-type lease or an operating lease.

Sales-type Reagent Rental Programs. Our reagent rental programs that effectively transfer control of instruments to our customers are classified as sales-type leases, and we recognize instrument revenue and cost in advance of billing the customer, at the time of installation and customer acceptance. Our right to future consideration related to instrument revenue is recorded as a lease receivable within other current and long-term assets, and is transferred to accounts receivable when customers are billed for future products and services over the term of the contract. On December 31, 2020, our lease receivable assets were $11.1 million, of which approximately $0.6 million and $1.1 million was reclassified to accounts receivable when customers were billed for related products and services during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of new placements under sales-type reagent rental programs, net of subsequent amounts reclassified to accounts receivable, and allowances established for credit losses, our lease receivable assets were $13.0 million at June 30, 2021. The impacts of discounting and unearned income at June 30, 2021, were not material. Profit and loss recognized at the commencement date and interest income during the three and six months ended June 30, 2021, were not material. We monitor customer purchases over the term of their agreement to assess the realizability of our lease receivable assets. Impairments during the three and six months ended June 30, 2021 were not material.

Operating-type Reagent Rental Programs. Our reagent rental programs that do not effectively transfer control of instruments to our customers are classified as operating leases, and we recognize instrument revenue and costs ratably over the term of the agreement. The cost of the instrument is capitalized within property and equipment. During the three and six months ended June 30, 2021, we transferred instruments of $3.3 million and $5.8 million, respectively, as compared to $1.7 million and $4.1 million for the three and six months ended June 30, 2020, from inventory to property and equipment. We had impairments of $3.8 million for both the three and six months ended June 30, 2021, associated with a write-down of rental assets in certain regions.

We estimate future revenue to be recognized related to our reagent rental programs of approximately $38.4 million, of which approximately 18%, 30%, 23%, 16%, and 13% are expected to be recognized during the remainder of 2021, the full years 2022, 2023, 2024, and thereafter, respectively. These future revenues relate to performance obligations not yet satisfied for which customers have committed to future purchases, net of any expected price adjustments, and as a result, may be lower than stated contractual commitments by our customers.

Other Customer Incentive Programs. Certain agreements with customers include discounts or rebates on the sale of products and services applied retrospectively, such as volume rebates achieved by purchasing a specified

purchase threshold of goods and services. We account for these discounts as variable consideration and estimate the likelihood of a customer meeting the threshold in order to determine the transaction price using the most predictive approach. We typically use the most-likely-amount method for incentives that are offered to individual customers and the expected-value method for programs that are offered to a broad group of customers. Revenue adjustments that relate to performance obligations satisfied in prior periods during the three and six months ended June 30, 2021, were not material. Refund obligations related to customer incentive programs are recorded in accrued liabilities for the actual issuance of incentives, incentives earned but not yet issued and estimates of incentives to be earned in the future.

Program Combinations. At times, we combine elements of our significant customer programs within a single customer contract. We separate each significant program element and include the contract assets, customer acquisition costs, deferred revenues and estimated future revenues within the most relevant program disclosures above. Each customer contract is presented as a net contract asset or net contract liability on our unaudited condensed consolidated balance sheet.

IDEXX Points. IDEXX Points may be applied to trade receivables due to us, converted to cash, or applied against the purchase price of IDEXX products and services. We consider IDEXX Points equivalent to cash. IDEXX Points that have not yet been used by customers are included in accrued liabilities until utilized or expired. Breakage is not material because customers can apply IDEXX Points to trade receivables at any time.

Accounts Receivable. We recognize revenue when it is probable that we will collect substantially all of the consideration to which we will be entitled, based on the customer’s intent and ability to pay the promised consideration. We apply judgment in determining the customer’s ability and intention to pay, which is based on a variety of factors including the customer’s historical payment experience or, in the case of a new customer, published credit and financial information pertaining to the customer. We have no significant customers that accounted for greater than 10% of our consolidated revenues, and we have no concentration of credit risk as of June 30, 2021.

Disaggregated Revenues. We present disaggregated revenue for our CAG segment based on major product and service categories. Our Water segment is comprised of a single major product category. Although our LPD segment does not meet the quantitative thresholds to be reported as a separate segment, we believe it is important to disaggregate these revenues as a major product and service category within our Other reportable segment given its distinct markets, and therefore we have elected to report LPD as a reportable segment.

The following table presents disaggregated revenue by major product and service categories:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
CAG segment revenue:
CAG Diagnostics recurring revenue:	$	661,300	$	510,254	$	1,278,580	$	998,179
IDEXX VetLab consumables	256,352		196,061		502,444		384,774
Rapid assay products	83,887		64,658		153,498		122,088
Reference laboratory diagnostic and consulting services	293,675		228,816		569,456		449,077
CAG Diagnostics services and accessories	27,386		20,719		53,182		42,240
CAG Diagnostics capital - instruments	35,054		18,871		66,244		42,704
Veterinary software, services and diagnostic imaging systems	49,241		36,975		93,538		77,213
CAG segment revenue	745,595		566,100		1,438,362		1,118,096
Water segment revenue	37,191		28,116		71,231		62,265
LPD segment revenue	33,524		32,244		72,794		66,398
Other segment revenue	9,832		11,132		21,462		17,169
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

Revenue by principal geographic area, based on customers’ domiciles, was as follows:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	515,238	$	405,998	$	987,876	$	802,781
Europe, the Middle East and Africa	171,553		123,969		342,803		253,735
Asia Pacific Region	83,624		71,750		168,406		135,262
Canada	39,337		25,357		72,795		49,604
Latin America	16,390		10,518		31,969		22,546
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

Costs to Obtain a Contract. We capitalize sales commissions and the related fringe benefits earned by our sales force when considered incremental and recoverable costs of obtaining a contract. Our contracts include performance obligations related to various goods and services, some of which are satisfied at a point in time and others over time. Commission costs related to performance obligations satisfied at a point in time are expensed at the time of sale, which is when revenue is recognized. Commission costs related to long-term service contracts and performance obligations satisfied over time, including extended warranties and SaaS subscriptions, are deferred and recognized on a systematic basis that is consistent with the transfer of the goods or services to which the asset relates. We apply judgment in estimating the amortization period, which ranges from 3 to 7 years, by taking into consideration our customer contract terms, history of renewals, expected length of customer relationship, as well as the useful life of the underlying technology and products. Amortization expense is included in sales and marketing expenses in the accompanying unaudited condensed consolidated statements of income. Deferred commission costs are periodically reviewed for impairment.

On December 31, 2020, our deferred commission costs, included within other assets, were $17.5 million, of which approximately $1.5 million and $3.0 million of commission expense was recognized during the three and six months ended June 30, 2021, respectively. Furthermore, as a result of commissions related to new extended warranties and SaaS subscriptions, net of subsequent recognition, our deferred commission costs were $18.4 million at June 30, 2021. Impairments of deferred commission costs, during the three and six months ended June 30, 2021, were not material.

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Acquisitions

6 Months Ended

Jun. 30, 2021

Business Combinations [Abstract]

Acquisitions

ACQUISITIONS

We believe that our acquisitions of businesses and other assets enhance our existing businesses by either expanding our geographic range and customer base or expanding our existing product lines. From time to time we may acquire small reference labs or radiology practices that we account for as either asset purchases or business combinations.

During the second quarter of 2021, we acquired the assets of the ezyVet cloud-based veterinary software businesses and the shares of ezyVet US, Inc., as well as the VetRadar business assets, for approximately $157.2 million, including an estimated contingent payment of $5 million. The acquired assets include the ezyVet cloud-native practice management system software and the VetRadar cloud-based workflow management software. The acquisition expands our cloud-based software offerings to support our customers with technology solutions that raise the standards of care for patients, improve practice efficiency, and enable more effective communication with pet owners. We estimate the preliminary fair value of assets acquired to be as follows: approximately $32.0 million in customer-related intangibles with a weighted average life of 10 years, approximately $8.4 million in technology-related intangibles with a weighted average life of 6 years, approximately $2.4 million in trademarks with a weighted average life of 14 years, approximately $1.8 million in non-compete agreements with a weighted average life of 5 years, approximately $109.4 million in goodwill, representing synergies within our broader CAG portfolio, and approximately $3.2 million in net tangible assets. We have not completed our allocation of goodwill to reporting units within our CAG segment. The purchase price allocation is subject to revision as additional information becomes available regarding working capital adjustments, tax-related matters, contingencies, and certain assets and liabilities. Goodwill related to this acquisition is expected to be deductible for tax purposes. Pro forma information has not been presented for this acquisition because such information is not material to the financial statements. The results of operations have been included in our CAG segment since the acquisition date. The acquisition expenses were approximately $1.8 million.

During the first quarter of 2021, we acquired the shares of a reference laboratory located in Switzerland for approximately $5.5 million in cash, including holdback and contingent payments of approximately $1.1 million. This acquisition expands our international reference laboratory presence and was accounted for as a business combination. The fair value of the assets acquired consists of approximately $4.3 million in intangible assets, primarily for customer relationships, which will be amortized over 9 years, approximately $1.8 million for goodwill, representing synergies within our broader CAG portfolio, and approximately $0.6 million of liabilities, including deferred taxes associated with the acquired intangible assets. Goodwill related to this acquisition is not deductible for tax purposes. Pro forma information has not been presented for this acquisition because such information is not material to the financial statements. The results of operations have been included in our CAG segment since the acquisition date. The acquisition expenses were not material.

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Share-Based Compensation

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Share-Based Compensation

SHARE-BASED COMPENSATION 

The fair value of options, restricted stock units, deferred stock units, and employee stock purchase rights awarded during the three and six months ended June 30, 2021, totaled $4.0 million and $48.3 million, respectively, as compared to $2.3 million and $38.6 million for the three and six months ended June 30, 2020, respectively. The total unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding at June 30, 2021, was $80.9 million, which will be recognized over a weighted average period of approximately 1.8 years. During the three and six months ended June 30, 2021, we recognized expenses of $9.6 million and $18.5 million, respectively, as compared to $7.8 million and $15.1 million for the three and six months ended June 30, 2020, respectively, related to share-based compensation.

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the expected stock price volatility, expected term, or risk-free interest rate may necessitate distinct valuation assumptions at each grant date. As such, we may use different assumptions for options granted throughout the year. Option awards are granted with an exercise price equal to or greater than the closing market price of our common stock at the date of grant. We have never paid any cash dividends on our common stock, and we have no intention to pay such a dividend at this time; therefore, we assume that no dividends will be paid over the expected terms of option awards.

The weighted averages of the valuation assumptions used to determine the fair value of each option award on the date of grant and the weighted average estimated fair values were as follows:

	For the Six Months Ended June 30,
	2021			2020
Share price at grant	$	542.57		$	288.49
Share price at exercise	$	546.43		$	288.49
Expected stock price volatility	31		%	27		%
Expected term, in years	6.2			6.0
Risk-free interest rate	0.7		%	1.4		%
Weighted average fair value of options granted	$	167.94		$	84.09

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Credit Losses

6 Months Ended

Jun. 30, 2021

Credit Loss [Abstract]

Credit Losses

CREDIT LOSSES  

We are exposed to credit losses primarily through our sales of products and services to our customers. We maintain allowances for credit losses for potentially uncollectible receivables. We base our estimates on a detailed analysis of specific customer situations and a percentage of our accounts receivable by aging category. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current economic conditions.

Additional allowances may be required if either the financial condition of our customers were to deteriorate, or a strengthening U.S. dollar impacts the ability of foreign customers to make payments to us on their U.S. dollar-denominated purchases. We monitor our ongoing credit exposure through active review of counterparty balances against contract terms and due dates. Our activities include timely account reconciliations, dispute resolution and payment confirmations. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

Account balances are charged off against the allowance when we believe it is probable the receivable will not be recovered. We may require collateralized asset support or a prepayment to mitigate credit risk. We do not have any off-balance sheet credit exposure related to our customers.

Accounts Receivable

The allowance for credit losses associated with accounts receivable was $6.4 million and $6.8 million at June 30, 2021 and December 31, 2020, respectively. Accounts receivable reflected on the balance sheet is net of this reserve. Based on an aging analysis, at June 30, 2021, approximately 92% of our accounts receivable had not yet reached the invoice due date and approximately 8% was considered past due, of which approximately 1% was greater than 60 days past due. At December 31, 2020, approximately 88% of our accounts receivable had not yet reached the invoice due date and approximately 12% was considered past due, of which approximately 1.5% was greater than 60 days past due.

Contract assets and lease receivables

The allowance for credit losses associated with the contract assets and lease receivables was $4.0 million and $3.7 million at June 30, 2021 and December 31, 2020, respectively. The assets reflected on the balance sheet are net of these reserves. Historically, we have experienced low credit loss rates on our customer commitment programs and lease receivables. We apply judgment in determining the customer’s ability and intention to pay, which is based on a variety of factors including the customer’s historical payment experience or, in the case of a new customer, published credit and financial information pertaining to the customer.

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Inventories

6 Months Ended

Jun. 30, 2021

Inventory, Net [Abstract]

Inventories

INVENTORIES

Inventories are stated at the lower of cost (first-in, first-out) or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The components of inventories were as follows:

(in thousands)	June 30, 2021		December 31, 2020
Raw materials	$	59,115	$	45,986
Work-in-process	25,103		20,374
Finished goods	157,174		143,513
Inventories	$	241,392	$	209,873

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Leases

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Leases

LEASES

Maturities of operating lease liabilities were as follows:

(in thousands, except lease term and discount rate)	June 30, 2021
2021 (remainder of year)	$	9,945
2022	23,213
2023	18,917
2024	13,962
2025	10,697
Thereafter	47,114
Total lease payments	123,848
Less imputed interest	(16,283)
Total	$	107,565

Total minimum future lease payments for leases that have not commenced as of June 30, 2021, are immaterial.

Supplemental cash flow information for leases was as follows:

(in thousands)	For the Six Months Ended June 30, 2021		For the Six Months Ended June 30, 2020
Cash paid for amounts included in the measurement of operating leases liabilities	$	11,914	$	9,346
Right-of-use assets obtained in exchange for operating lease obligations, net of early lease terminations (a)	$	24,427	$	10,738

(a) Additions for the six months ended June 30, 2021, include $7.9 million of right-of-use assets obtained with the acquisition of ezyVet.

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Other Current and Long-Term Assets

6 Months Ended

Jun. 30, 2021

Other Assets, Noncurrent [Abstract]

Other Current and Long-Term Assets

OTHER CURRENT AND LONG-TERM ASSETS

Other current assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	46,982	$	43,751
Prepaid expenses	33,227		34,556
Contract assets, net	27,695		23,837
Taxes receivable	17,383		19,476
Deferred sales commissions	6,113		5,738
Other assets	13,992		10,150
Other current assets	$	145,392	$	137,508

Other long-term assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	108,317	$	104,369
Contract assets, net	106,962		91,681
Deferred income taxes	26,770		31,549
Deferred sales commissions	12,291		11,719
Investment in long-term product supply arrangements	10,489		12,065
Taxes receivable	2,450		6,329
Other assets	38,067		31,883
Other long-term assets	$	305,346	$	289,595

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Accrued Liabilities

6 Months Ended

Jun. 30, 2021

Accrued Liabilities, Current [Abstract]

Accrued Liabilities

ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued employee compensation and related expenses	136,331		167,649
Accrued expenses	$	112,388	$	112,526
Accrued customer incentives and refund obligations	85,299		75,064
Accrued taxes	39,428		42,676
Current lease liabilities	19,235		17,733
Accrued liabilities	$	392,681	$	415,648

Other long-term liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued taxes	$	58,129	$	60,313
Other accrued long-term expenses	26,914		25,291
Other long-term liabilities	$	85,043	$	85,604

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Repurchases Of Common Stock

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Repurchases Of Common Stock

REPURCHASES OF COMMON STOCK

We primarily acquire shares by repurchases in the open market. However, we also acquire shares that are surrendered by employees in payment for the minimum required statutory withholding taxes due on the vesting of restricted stock units and the settlement of deferred stock units, otherwise referred to herein as employee surrenders. We issue shares of treasury stock upon the vesting of certain restricted stock units and upon the exercise of certain stock options. The number of shares of treasury stock issued during the three and six months ended June 30, 2021 and 2020 was not material.

The following is a summary of our open market common stock repurchases, reported on a trade date basis, and shares acquired through employee surrender:

(in thousands, except per share amounts)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Shares repurchased in the open market	341		—		618		721
Shares acquired through employee surrender for statutory tax withholding (1)	—		—		28		30
Total shares repurchased	341		—		646		751
Cost of shares repurchased in the open market	$	188,409	$	—	$	327,622	$	179,623
Cost of shares for employee surrenders	3		65		14,986		8,669
Total cost of shares	$	188,412	$	65	$	342,608	$	188,292
Average cost per share - open market repurchases	$	552.08	$	—	$	529.45	$	249.20
Average cost per share - employee surrenders	$	550.59	$	312.19	$	544.08	$	288.94
Average cost per share - total	$	552.08	$	312.19	$	530.07	$	250.79

(1) For the quarters ended June 30, 2021 and 2020, the number of shares acquired though employee surrender for statutory tax withholding were below rounding thresholds.

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Income Taxes

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES 

Our effective income tax rate was 19.5% for the three months ended June 30, 2021, as compared to 18.9% for the three months ended June 30, 2020, and 17.3% for the six months ended June 30, 2021, as compared to 18.6% for the six months ended June 30, 2020.The increase in our effective tax rate for the three months ended June 30, 2021, as compared to the same period in the prior year, was primarily due to changes in the regional earnings mix. The decrease in our effective tax rate for the six months ended June 30, 2021, as compared to the same period in the prior year, was primarily driven by an overall increase in tax benefits from share-based compensation.

The effective tax rate for the three and six months ended June 30, 2021, differed from the U.S. statutory tax rate of 21% primarily due to tax benefits from share-based compensation.

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Accumulated Other Comprehensive Income

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Accumulated Other Comprehensive Income

ACCUMULATED OTHER COMPREHENSIVE INCOME

The changes in AOCI, net of tax, consisted of the following:

	For the Six Months Ended June 30, 2021
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized Gain (Loss) on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2020	$	(272)	$	(9,934)	$	(5,982)	$	(2,159)	$	(35,268)	$	(53,615)
Other comprehensive income (loss) before reclassifications	154		3,191		2,654		2,202		(7,246)		955
Loss reclassified from accumulated other comprehensive income	—		4,269		—		—		—		4,269
Balance as of June 30, 2021	$	(118)	$	(2,474)	$	(3,328)	$	43	$	(42,514)	$	(48,391)

	For the Six Months Ended June 30, 2020
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized Gain (Loss) on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized (Loss) Gain on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2019	$	110	$	(736)	$	1,396	$	3,467	$	(50,419)	$	(46,182)
Other comprehensive (loss) income before reclassifications	(574)		5,538		(642)		2,602		(15,200)		(8,276)
Gain reclassified from accumulated other comprehensive income	—		(2,574)		—		—		—		(2,574)
Balance as of June 30, 2020	$	(464)	$	2,228	$	754	$	6,069	$	(65,619)	$	(57,032)

The following tables present components and amounts reclassified out of AOCI to net income:

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Three Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(2,715)	$	1,812
	Tax expense (benefit)	(340)		339
	Gain (loss), net of tax	$	(2,375)	$	1,473

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Six Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(5,145)	$	3,153
	Tax expense (benefit)	(876)		579
	Gain (loss), net of tax	$	(4,269)	$	2,574

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Earnings Per Share

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

Basic earnings per share is computed by dividing net income attributable to our stockholders by the weighted average number of shares of common stock and vested deferred stock units outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested restricted stock units and unvested deferred stock units using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options and the total unrecognized compensation expense for unvested share-based compensation awards, would be used to purchase our common stock at the average market price during the period. Vested deferred stock units outstanding are included in shares outstanding for basic and diluted earnings per share because the associated shares of our common stock are issuable for no cash consideration, the number of shares of our common stock to be issued is fixed, and issuance is not contingent. See Note 5 to the consolidated financial statements in our 2020 Annual Report for additional information regarding deferred stock units.

The following is a reconciliation of weighted average shares outstanding for basic and diluted earnings per share:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Dilutive effect of share-based payment awards	1,329	1,268	1,367	1,286
	86,654	86,402	86,794	86,568

Certain awards and options to acquire shares have been excluded from the calculation of shares outstanding for diluted earnings per share because they were anti-dilutive. The following table presents information concerning those anti-dilutive awards and options:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Weighted average number of shares underlying anti-dilutive awards	—	—	1	1
Weighted average number of shares underlying anti-dilutive options	135	270	102	218

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Commitments, Contingencies and Guarantees

6 Months Ended

Jun. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments, Contingencies and Guarantees

COMMITMENTS, CONTINGENCIES AND GUARANTEES

Commitments

See “Note 8. Leases”, for more information regarding our lease commitments.

Contingencies and Guarantees

We are subject to claims that may arise in the ordinary course of business, including with respect to actual and threatened litigation and other matters. We accrue for loss contingencies when it is probable that future expenditures will be made, and such expenditures can be reasonably estimated. However, the results of legal actions cannot be predicted with certainty, and therefore our actual losses with respect to these contingencies could be higher and lower than our accruals. Except for the litigation matter described below, at June 30, 2021, our accruals with respect to actual and threatened litigation were not material.

We are a defendant in an ongoing litigation matter involving an alleged breach of contract for underpayment of royalty payments made from 2004 through 2017 under an expired patent license agreement. The plaintiff has asserted a claim of approximately $50 million, inclusive of interest, alleging that the incorrect royalty provision was applied to certain licensed products and services throughout the agreement term and that royalties were also due on non-licensed diagnostic services that were provided concurrently with licensed services. The trial court has ruled in favor of the plaintiff in this matter and we are appealing the judgment and continue to vigorously defend ourselves against the plaintiff’s allegations. While we believe the claim is without merit, litigation is inherently unpredictable and there can be no assurance that we will prevail in this matter. During the third quarter of 2020, we established an accrual of $27.5 million related to this ongoing matter, which represents the amount of a possible loss that we have determined to be probable and estimable. We have not made any adjustments to this accrual since it was established. The actual cost of resolving this matter may be higher or lower than the amount we have accrued.

From time to time, we have received notices alleging that our products infringe third-party proprietary rights, although we are not aware of any pending litigation with respect to such claims. Patent litigation frequently is complex and expensive, and the outcome of patent litigation can be difficult to predict. There can be no assurance that we will prevail in any infringement proceedings that may be commenced against us. If we lose any such litigation, we may be stopped from selling certain products and/or we may be required to pay damages as a result of the litigation.

We have had no significant changes to our contingencies and guarantees discussed in Note 16 to the consolidated financial statements in our 2020 Annual Report.

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Segment Reporting

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Segment Reporting

SEGMENT REPORTING

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision-maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. Our CODM is our Chief Executive Officer. Our reportable segments include diagnostic and information technology-based products and services for the veterinary market, which we refer to as the Companion Animal Group (“CAG”), water quality products (“Water”) and diagnostic products and services for livestock and poultry health and to ensure the quality and safety of milk and improve dairy efficiency, which we refer to as Livestock, Poultry and Dairy (“LPD”). Although our LPD segment does not meet the quantitative thresholds to be reported as a separate segment, we believe it is important to disaggregate these revenues as a major product and service category within our Other reportable segment given its distinct markets, and therefore we have elected to report LPD as a reportable segment. Our Other operating segment combines and presents products and services for the human medical diagnostics (“OPTI Medical”) market with our out-licensing arrangements. Assets are not allocated to segments for internal reporting purposes.

The following is a summary of segment performance:

(in thousands)	For the Three Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	745,595	$	37,191	$	33,524	$	9,832	$	826,142
Income from operations	$	234,735	$	17,228	$	6,868	$	422	$	259,253
Interest expense, net									(7,522)
Income before provision for income taxes									251,731
Provision for income taxes									49,125
Net income									202,606
Less: Net income attributable to noncontrolling interest									24
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	202,582
2020
Revenue	$	566,100	$	28,116	$	32,244	$	11,132	$	637,592
Income from operations	$	167,969	$	12,258	$	8,249	$	4,772	$	193,248
Interest expense, net									(9,426)
Income before provision for income taxes									183,822
Provision for income taxes									34,826
Net income									148,996
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	148,940

(in thousands)	For the Six Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	1,438,362	$	71,231	$	72,794	$	21,462	$	1,603,849
Income from operations	$	447,945	$	32,000	$	20,676	$	6,254	$	506,875
Interest expense, net									(15,054)
Income before provision for income taxes									491,821
Provision for income taxes									84,926
Net income									406,895
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	406,839
2020
Revenue	$	1,118,096	$	62,265	$	66,398	$	17,169	$	1,263,928
Income from operations	$	286,628	$	28,140	$	17,912	$	4,893	$	337,573
Interest expense, net									(16,978)
Income before provision for income taxes									320,595
Provision for income taxes									59,743
Net income									260,852
Less: Net income attributable to noncontrolling interest									85
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	260,767

See “Note 3. Revenue Recognition” for a summary of disaggregated revenue by reportable segment and by major product and service category for the three and six months ended June 30, 2021 and 2020.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS 

U.S. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. U.S. GAAP requires an entity to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value.  

We have certain financial assets and liabilities that are measured at fair value on a recurring basis, certain nonfinancial assets and liabilities that may be measured at fair value on a non-recurring basis and certain financial assets and liabilities that are not measured at fair value in our unaudited condensed consolidated balance sheets but for which we disclose the fair value. The fair value disclosures of these assets and liabilities are based on a three-level hierarchy, which is defined as follows: 

Level 1	Quoted prices in active markets for identical assets or liabilities that the entity can access at the measurement date.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. We did not have any transfers in or out of Level 3 of the fair value hierarchy during the three and six months ended June 30, 2021.

Our cross currency swap contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our cross currency swap contracts classified as derivative instruments using prevailing market conditions as of the close of business on each balance sheet date. The product of this calculation is then adjusted for counterparty risk.

Our foreign currency exchange contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our foreign currency exchange contracts classified as derivative instruments using an income approach, based on prevailing market forward rates less the contract rate multiplied by the notional amount. The product of this calculation is then adjusted for counterparty risk.

The amounts outstanding under our unsecured revolving credit facility (“Credit Facility” or “line of credit”) and senior notes (“long-term debt”) are measured at carrying value in our unaudited condensed consolidated balance sheets though we disclose the fair value of these financial instruments. We determine the fair value of the amount outstanding under our Credit Facility and long-term debt using an income approach, utilizing a discounted cash flow analysis based on current market interest rates for debt issues with similar remaining years to maturity, adjusted for applicable credit risk. Our Credit Facility and long-term debt are valued using Level 2 inputs. The estimated fair value of our Credit Facility approximates its carrying value. The estimated fair value and carrying value of our long-term debt were $987.8 million and $905.6 million, respectively, as of June 30, 2021, and $1.0 billion and $909.1 million, respectively, as of December 31, 2020.

The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy:

(in thousands)
As of June 30, 2021	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2021
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,007	$	—	$	—	$	1,007
Cross currency swaps (3)	$	—	$	54	$	—	$	54
Foreign currency exchange contracts (3)	$	—	$	2,400	$	—	$	2,400
Liabilities
Foreign currency exchange contracts (3)	$	—	$	5,487	$	—	$	5,487
Deferred compensation(4)	$	1,007	$	—	$	—	$	1,007
Contingent payment- acquisitions	$	—	$	—	$	5,000	$	5,000

(in thousands)
As of December 31, 2020	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2020
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,145	$	—	$	—	$	1,145
Foreign currency exchange contracts (3)	$	—	$	125	$	—	$	125
Liabilities
Cross currency swaps (3)	$	—	$	2,841	$	—	$	2,841
Foreign currency exchange contracts (3)	$	—	$	12,373	$	—	$	12,373
Deferred compensation(4)	$	1,145	$	—	$	—	$	1,145

(1)Money market funds with an original maturity of less than ninety days are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of June 30, 2021 and December 31, 2020, consisted of demand deposits.

(2)Equity mutual funds relate to a deferred compensation plan that was assumed as part of a previous business combination. This amount is included within other long-term assets. See footnote (4) below for a discussion of the related deferred compensation liability. 

(3)Cross currency swaps and foreign currency exchange contracts are included within other current assets, other long-term assets, accrued liabilities, or other long-term liabilities depending on the gain (loss) position and anticipated settlement date.  

(4)A deferred compensation plan assumed as part of a previous business combination is included within accrued liabilities and other long-term liabilities. The fair value of our deferred compensation plan is indexed to the performance of the underlying equity mutual funds discussed in footnote (2) above.  

We have classified our liability for contingent consideration related to acquisitions within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs, which includes the achievements of future revenues. The contingent consideration is included within other long-term liabilities.

The estimated fair value of certain financial instruments, including cash and cash equivalents, accounts receivable and accounts payable, approximate carrying value due to their short maturity.

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Hedging Instruments

6 Months Ended

Jun. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Hedging Instruments

HEDGING INSTRUMENTS

Disclosure within this note is presented to provide transparency about how and why we use derivative and non-derivative instruments (collectively “hedging instruments”), how the instruments and related hedged items are accounted for, and how the instruments and related hedged items affect our financial position, results of operations and cash flows.

We are exposed to certain risks related to our ongoing business operations. The primary risk that we currently manage by using hedging instruments is foreign currency exchange risk. We may also enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with borrowings under our variable-rate Credit Facility.

Our subsidiaries enter into foreign currency exchange contracts to manage the exchange risk associated with their forecasted intercompany inventory purchases and sales for the next year. From time to time, we may also enter into other foreign currency exchange contracts, cross currency swaps or foreign-denominated debt issuances to minimize the impact of foreign currency fluctuations associated with specific balance sheet exposures, including net investments in certain foreign subsidiaries.  

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions, including transactions denominated in the euro, British pound, Japanese yen, Canadian dollar, and Australian dollar. We also utilize natural hedges to mitigate our transaction and commitment exposures. Our corporate policy prescribes the range of allowable hedging activity. We enter into foreign currency exchange contracts with well-capitalized multinational financial institutions, and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management. Our accounting policies for these contracts are based on the designation of such instruments as hedging transactions.

We recognize all hedging instruments on the balance sheet at fair value at the balance sheet date. Instruments that do not qualify for hedge accounting treatment must be recorded at fair value through earnings. To qualify for hedge accounting treatment, cash flow and net investment hedges must be highly effective in offsetting changes to expected future cash flows or fair value on hedged transactions. If the instrument qualifies for hedge accounting, changes in the fair value of the hedging instrument from the effective portion of the hedge are deferred in AOCI, net of tax, and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. We immediately record in earnings the extent to which a hedging instrument is not effective in achieving offsetting changes in fair value. We de-designate hedging instruments from hedge accounting when the likelihood of the hedged transaction occurring becomes less than probable. For de-designated instruments, the gain or loss from the time of de-designation through maturity of the instrument is recognized in earnings. Any gain or loss in AOCI at the time of de-designation is reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. See “Note 13. Accumulated Other Comprehensive Income” for further information regarding the effect of hedging instruments on our unaudited condensed consolidated statements of income for the three and six months ended June 30, 2021 and 2020.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit certain outstanding receivables and payables to be offset in the event of default. Our derivative contracts do not require either party to post cash collateral. We elect to present our derivative assets and liabilities in the unaudited condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts are classified as operating cash flows, which is consistent with the cash flow treatment of the underlying items being hedged. 

Cash Flow Hedges 

We have designated our foreign currency exchange contracts as cash flow hedges as these derivative instruments mitigate the exposure to variability in the cash flows of forecasted transactions attributable to foreign currency exchange. Unless noted otherwise, we have also designated our derivative instruments as qualifying for hedge accounting treatment.  

We did not de-designate any instruments from hedge accounting treatment during either the three and six months ended June 30, 2021 or 2020. At June 30, 2021, the estimated amount of net losses, net of tax, which are expected to be reclassified out of AOCI and into earnings within the next 12 months, is $2.9 million if exchange rates do not fluctuate from the levels at June 30, 2021. 

We target to hedge approximately 85% of the estimated exposure from intercompany product purchases and sales denominated in the euro, British pound, Canadian dollar, Japanese yen, and Australian dollar. We have additional unhedged foreign currency exposures related to foreign services and emerging markets where it is not practical to hedge. We primarily utilize foreign currency exchange contracts with durations of less than 24 months. Quarterly, we enter into contracts to hedge

incremental portions of anticipated foreign currency transactions for the current and following year. As a result, our risk with respect to foreign currency exchange rate fluctuations and the notional value of foreign currency exchange contracts may vary throughout the year. The U.S. dollar is the currency purchased or sold in all of our foreign currency exchange contracts. The notional amount of foreign currency exchange contracts to hedge forecasted intercompany inventory purchases and sales totaled $210.2 million and $202.7 million at June 30, 2021 and December 31, 2020, respectively.

The following tables present the effect of cash flow hedge accounting on our unaudited condensed consolidated statements of income and comprehensive income, and provide information regarding the location and amounts of pretax gains or losses of derivatives: 

(in thousands)		Three Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	336,834	$	258,250
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(2,715)	$	1,812

(in thousands)		Six Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	643,759	$	524,996
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(5,145)	$	3,153

Net Investment Hedges, Euro-Denominated Notes

In June 2015, we issued and sold through a private placement an aggregate principal amount of €88.9 million in euro-denominated 1.785% Series C Senior Notes due June 18, 2025. We have designated these euro-denominated notes as a hedge of our euro net investment in certain foreign subsidiaries to reduce the volatility in stockholders’ equity caused by changes in foreign currency exchange rates in the euro relative to the U.S. dollar. As a result of this designation, gains and losses from the change in translated U.S. dollar value of these euro-denominated notes are recorded in AOCI rather than to earnings. We recorded losses of $1.0 million and gains of $2.7 million, net of tax, within AOCI as a result of this net investment hedge for the three and six months ended June 30, 2021, respectively, and losses of $1.7 million and $0.6 million for the three and six months ended June 30, 2020, respectively. The related cumulative unrealized loss recorded at June 30, 2021, will not be reclassified in earnings until the complete or substantially complete liquidation of the net investment in the hedged foreign operations or a portion of the hedge no longer qualifies for hedge accounting treatment. See Note 13 to the consolidated financial statements included in our 2020 Annual Report for further information regarding the issuance of these euro-denominated notes.

Net Investment Hedges, Cross Currency Swaps

We have entered into several cross currency swap contracts as a hedge of our net investment in foreign operations to offset foreign currency translation gains and losses on the net investment. These cross currency swaps have maturity dates beginning on June 30, 2023, through June 18, 2025. At maturity of the cross currency swap contracts, we will deliver the notional amount of €90.0 million and will receive approximately $104.5 million from the counterparties on June 30, 2023, and we will deliver the notional amount of €15 million and will receive approximately $17.5 million from the counterparties on June 18, 2025. The change in fair value of the cross currency swap contracts are recorded in AOCI and will be reclassified to earnings when the foreign subsidiaries are sold or substantially liquidated. During the three and six months ended June 30, 2021, we recorded losses of $1.1 million and gains of $2.2 million, respectively, net of tax, within AOCI as a result of these net investment hedges, and losses of $1.4 million and gains of $2.6 million during the three and six months ended June 30, 2020, respectively. We will receive quarterly interest payments from the counterparties based on a fixed interest rate until maturity of the cross currency swaps. This interest rate component is excluded from the assessment of hedge effectiveness and, thus is recognized as a reduction to interest expense over the life of the hedge instrument. We recognized approximately $0.7 million and $1.4 million related to the excluded component as a reduction of interest expense for the three and six months ended June 30, 2021, respectively, and $0.7 million and $1.3 million for the three and six months ended June 30, 2020, respectively.

Fair Values of Hedging Instruments Designated as Hedges in Consolidated Balance Sheets

The fair values of hedging instruments and their respective classification on our unaudited condensed consolidated balance sheets and amounts subject to offset under master netting arrangements consisted of the following derivative instruments, unless otherwise noted: 

(in thousands)		Hedging Assets
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	1,676	$	125
Cross currency swaps	Other long-term assets	54		—
Foreign currency exchange contracts	Other long-term assets	724		—
Total derivative instruments presented as hedge instruments on the balance sheet		2,454		125
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	444	$	—

(in thousands)		Hedging Liabilities
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	5,349	$	12,373
Cross currency swaps	Other long-term liabilities	—		2,841
Foreign currency exchange contracts	Other long-term liabilities	138		—
Total derivative instruments presented as cash flow hedges on the balance sheet		5,487		15,214
Non-derivative foreign currency denominated debt designated as net investment hedge on the balance sheet(1)	Long-term debt	105,634		109,125
Total hedging instruments presented on the balance sheet		111,121		124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	109,111	$	124,214

(1) Amounts represent reported carrying amounts of our foreign currency denominated debt. See “Note 17. Fair Value Measurements” for information regarding the fair value of our long-term debt.

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Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

New Accounting Pronouncements Adopted and Not Yet Adopted

New Accounting Pronouncements Adopted

Effective January 1, 2021, we adopted ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” The new guidance is intended to simplify the accounting for income taxes by removing certain exceptions and by updating accounting requirements around goodwill recognized for tax purposes and the allocation of current and deferred tax expense among legal entities, among other minor changes. The adoption of ASU 2019-12 did not have a material impact on our consolidated financial statements.

New Accounting Pronouncements Not Yet Adopted

In July 2021, the FASB issued ASU 2021-05, “Leases (Topic 842); Lessors - Certain Leases with Variable Lease Payments.” ASU 2021-05 requires a lessor to classify a lease with variable payments that do not depend on an index or rate as an operating lease if another lease classification (i.e., sales-type or direct financing) would result in recognition of a day-one loss. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, and earlier adoption is permitted. We have elected to adopt this

standard as of July 1, 2021, on a prospective basis. We do not expect the adoption of ASU 2021-05 to have a material impact on our consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU 2020-04 is intended to provide optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The relief offered by this guidance, if adopted, is available to companies for the period March 12, 2020 through December 31, 2022. We do not expect the discontinuation of LIBOR to have a material impact on our consolidated financial statements.

Revenue

Our revenue is recognized when, or as, performance obligations under the terms of a contract are satisfied, which occurs when control of the promised products or services is transferred to a customer. We exclude sales, use, value-added, and other taxes we collect on behalf of third parties from revenue. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products or services to a customer. To accurately present the consideration received in exchange for promised products or services, we apply the five-step model outlined below:

1.Identification of a contract or agreement with a customer

2.Identification of our performance obligations in the contract or agreement

3.Determination of the transaction price

4.Allocation of the transaction price to the performance obligations

5.Recognition of revenue when, or as, we satisfy a performance obligation

Share-based Compensation

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the expected stock price volatility, expected term, or risk-free interest rate may necessitate distinct valuation assumptions at each grant date. As such, we may use different assumptions for options granted throughout the year. Option awards are granted with an exercise price equal to or greater than the closing market price of our common stock at the date of grant. We have never paid any cash dividends on our common stock, and we have no intention to pay such a dividend at this time; therefore, we assume that no dividends will be paid over the expected terms of option awards.

Credit Losses

We are exposed to credit losses primarily through our sales of products and services to our customers. We maintain allowances for credit losses for potentially uncollectible receivables. We base our estimates on a detailed analysis of specific customer situations and a percentage of our accounts receivable by aging category. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current economic conditions.

Additional allowances may be required if either the financial condition of our customers were to deteriorate, or a strengthening U.S. dollar impacts the ability of foreign customers to make payments to us on their U.S. dollar-denominated purchases. We monitor our ongoing credit exposure through active review of counterparty balances against contract terms and due dates. Our activities include timely account reconciliations, dispute resolution and payment confirmations. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

Account balances are charged off against the allowance when we believe it is probable the receivable will not be recovered. We may require collateralized asset support or a prepayment to mitigate credit risk. We do not have any off-balance sheet credit exposure related to our customers.

Inventories

Inventories are stated at the lower of cost (first-in, first-out) or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation.

Earnings Per Share

Basic earnings per share is computed by dividing net income attributable to our stockholders by the weighted average number of shares of common stock and vested deferred stock units outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested restricted stock units and unvested deferred stock units using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options and the total unrecognized compensation expense for unvested share-based compensation awards, would be used to purchase our common stock at the average market price during the period. Vested deferred stock units outstanding are included in shares outstanding for basic and diluted earnings per share because the associated shares of our common stock are issuable for no cash consideration, the number of shares of our common stock to be issued is fixed, and issuance is not contingent.

Fair Value Measurements

U.S. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. U.S. GAAP requires an entity to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value.  

We have certain financial assets and liabilities that are measured at fair value on a recurring basis, certain nonfinancial assets and liabilities that may be measured at fair value on a non-recurring basis and certain financial assets and liabilities that are not measured at fair value in our unaudited condensed consolidated balance sheets but for which we disclose the fair value. The fair value disclosures of these assets and liabilities are based on a three-level hierarchy, which is defined as follows: 

Level 1	Quoted prices in active markets for identical assets or liabilities that the entity can access at the measurement date.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. We did not have any transfers in or out of Level 3 of the fair value hierarchy during the three and six months ended June 30, 2021.

Our cross currency swap contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our cross currency swap contracts classified as derivative instruments using prevailing market conditions as of the close of business on each balance sheet date. The product of this calculation is then adjusted for counterparty risk.

Our foreign currency exchange contracts are measured at fair value on a recurring basis in our accompanying unaudited condensed consolidated balance sheets. We measure the fair value of our foreign currency exchange contracts classified as derivative instruments using an income approach, based on prevailing market forward rates less the contract rate multiplied by the notional amount. The product of this calculation is then adjusted for counterparty risk.

The amounts outstanding under our unsecured revolving credit facility (“Credit Facility” or “line of credit”) and senior notes (“long-term debt”) are measured at carrying value in our unaudited condensed consolidated balance sheets though we disclose the fair value of these financial instruments. We determine the fair value of the amount outstanding under our Credit Facility and long-term debt using an income approach, utilizing a discounted cash flow analysis based on current market interest rates for debt issues with similar remaining years to maturity, adjusted for applicable credit risk. Our Credit Facility and long-term debt are valued using Level 2 inputs. The estimated fair value of our Credit Facility approximates its carrying value.

Derivatives

We are exposed to certain risks related to our ongoing business operations. The primary risk that we currently manage by using hedging instruments is foreign currency exchange risk. We may also enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with borrowings under our variable-rate Credit Facility.

Our subsidiaries enter into foreign currency exchange contracts to manage the exchange risk associated with their forecasted intercompany inventory purchases and sales for the next year. From time to time, we may also enter into other foreign currency exchange contracts, cross currency swaps or foreign-denominated debt issuances to minimize the impact of foreign currency fluctuations associated with specific balance sheet exposures, including net investments in certain foreign subsidiaries.  

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions, including transactions denominated in the euro, British pound, Japanese yen, Canadian dollar, and Australian dollar. We also utilize natural hedges to mitigate our transaction and commitment exposures. Our corporate policy prescribes the range of allowable hedging activity. We enter into foreign currency exchange contracts with well-capitalized multinational financial institutions, and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management. Our accounting policies for these contracts are based on the designation of such instruments as hedging transactions.

We recognize all hedging instruments on the balance sheet at fair value at the balance sheet date. Instruments that do not qualify for hedge accounting treatment must be recorded at fair value through earnings. To qualify for hedge accounting treatment, cash flow and net investment hedges must be highly effective in offsetting changes to expected future cash flows or fair value on hedged transactions. If the instrument qualifies for hedge accounting, changes in the fair value of the hedging instrument from the effective portion of the hedge are deferred in AOCI, net of tax, and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. We immediately record in earnings the extent to which a hedging instrument is not effective in achieving offsetting changes in fair value. We de-designate hedging instruments from hedge accounting when the likelihood of the hedged transaction occurring becomes less than probable. For de-designated instruments, the gain or loss from the time of de-designation through maturity of the instrument is recognized in earnings. Any gain or loss in AOCI at the time of de-designation is reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. See “Note 13. Accumulated Other Comprehensive Income” for further information regarding the effect of hedging instruments on our unaudited condensed consolidated statements of income for the three and six months ended June 30, 2021 and 2020.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit certain outstanding receivables and payables to be offset in the event of default. Our derivative contracts do not require either party to post cash collateral. We elect to present our derivative assets and liabilities in the unaudited condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts are classified as operating cash flows, which is consistent with the cash flow treatment of the underlying items being hedged. 

Cash Flow Hedges 

We have designated our foreign currency exchange contracts as cash flow hedges as these derivative instruments mitigate the exposure to variability in the cash flows of forecasted transactions attributable to foreign currency exchange. Unless noted otherwise, we have also designated our derivative instruments as qualifying for hedge accounting treatment.

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Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

The following table presents disaggregated revenue by major product and service categories:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
CAG segment revenue:
CAG Diagnostics recurring revenue:	$	661,300	$	510,254	$	1,278,580	$	998,179
IDEXX VetLab consumables	256,352		196,061		502,444		384,774
Rapid assay products	83,887		64,658		153,498		122,088
Reference laboratory diagnostic and consulting services	293,675		228,816		569,456		449,077
CAG Diagnostics services and accessories	27,386		20,719		53,182		42,240
CAG Diagnostics capital - instruments	35,054		18,871		66,244		42,704
Veterinary software, services and diagnostic imaging systems	49,241		36,975		93,538		77,213
CAG segment revenue	745,595		566,100		1,438,362		1,118,096
Water segment revenue	37,191		28,116		71,231		62,265
LPD segment revenue	33,524		32,244		72,794		66,398
Other segment revenue	9,832		11,132		21,462		17,169
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

Revenue by principal geographic area, based on customers’ domiciles, was as follows:

(in thousands)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
United States	$	515,238	$	405,998	$	987,876	$	802,781
Europe, the Middle East and Africa	171,553		123,969		342,803		253,735
Asia Pacific Region	83,624		71,750		168,406		135,262
Canada	39,337		25,357		72,795		49,604
Latin America	16,390		10,518		31,969		22,546
Total revenue	$	826,142	$	637,592	$	1,603,849	$	1,263,928

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Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of weighted averages of the assumptions used in estimating the fair value of stock option awards

The weighted averages of the valuation assumptions used to determine the fair value of each option award on the date of grant and the weighted average estimated fair values were as follows:

	For the Six Months Ended June 30,
	2021			2020
Share price at grant	$	542.57		$	288.49
Share price at exercise	$	546.43		$	288.49
Expected stock price volatility	31		%	27		%
Expected term, in years	6.2			6.0
Risk-free interest rate	0.7		%	1.4		%
Weighted average fair value of options granted	$	167.94		$	84.09

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Inventories (Tables)

6 Months Ended

Jun. 30, 2021

Inventory, Net [Abstract]

Schedule of components of inventories

The components of inventories were as follows:

(in thousands)	June 30, 2021		December 31, 2020
Raw materials	$	59,115	$	45,986
Work-in-process	25,103		20,374
Finished goods	157,174		143,513
Inventories	$	241,392	$	209,873

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Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Maturities of operating lease liabilities

Maturities of operating lease liabilities were as follows:

(in thousands, except lease term and discount rate)	June 30, 2021
2021 (remainder of year)	$	9,945
2022	23,213
2023	18,917
2024	13,962
2025	10,697
Thereafter	47,114
Total lease payments	123,848
Less imputed interest	(16,283)
Total	$	107,565

Lease and supplemental cash flow information

Supplemental cash flow information for leases was as follows:

(in thousands)	For the Six Months Ended June 30, 2021		For the Six Months Ended June 30, 2020
Cash paid for amounts included in the measurement of operating leases liabilities	$	11,914	$	9,346
Right-of-use assets obtained in exchange for operating lease obligations, net of early lease terminations (a)	$	24,427	$	10,738

(a) Additions for the six months ended June 30, 2021, include $7.9 million of right-of-use assets obtained with the acquisition of ezyVet.

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Other Current and Long-Term Assets (Tables)

6 Months Ended

Jun. 30, 2021

Other Assets, Noncurrent [Abstract]

Schedule of other current assets

Other current assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	46,982	$	43,751
Prepaid expenses	33,227		34,556
Contract assets, net	27,695		23,837
Taxes receivable	17,383		19,476
Deferred sales commissions	6,113		5,738
Other assets	13,992		10,150
Other current assets	$	145,392	$	137,508

Schedule of other long-term assets

Other long-term assets consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Customer acquisition costs	$	108,317	$	104,369
Contract assets, net	106,962		91,681
Deferred income taxes	26,770		31,549
Deferred sales commissions	12,291		11,719
Investment in long-term product supply arrangements	10,489		12,065
Taxes receivable	2,450		6,329
Other assets	38,067		31,883
Other long-term assets	$	305,346	$	289,595

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Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2021

Accrued Liabilities, Current [Abstract]

Schedule of accrued liabilities

Accrued liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued employee compensation and related expenses	136,331		167,649
Accrued expenses	$	112,388	$	112,526
Accrued customer incentives and refund obligations	85,299		75,064
Accrued taxes	39,428		42,676
Current lease liabilities	19,235		17,733
Accrued liabilities	$	392,681	$	415,648

Schedule of other long-term liabilities

Other long-term liabilities consisted of the following:

(in thousands)	June 30, 2021		December 31, 2020
Accrued taxes	$	58,129	$	60,313
Other accrued long-term expenses	26,914		25,291
Other long-term liabilities	$	85,043	$	85,604

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Repurchases of Common Stock (Tables)

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Schedule of common stock repurchases

The following is a summary of our open market common stock repurchases, reported on a trade date basis, and shares acquired through employee surrender:

(in thousands, except per share amounts)	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Shares repurchased in the open market	341		—		618		721
Shares acquired through employee surrender for statutory tax withholding (1)	—		—		28		30
Total shares repurchased	341		—		646		751
Cost of shares repurchased in the open market	$	188,409	$	—	$	327,622	$	179,623
Cost of shares for employee surrenders	3		65		14,986		8,669
Total cost of shares	$	188,412	$	65	$	342,608	$	188,292
Average cost per share - open market repurchases	$	552.08	$	—	$	529.45	$	249.20
Average cost per share - employee surrenders	$	550.59	$	312.19	$	544.08	$	288.94
Average cost per share - total	$	552.08	$	312.19	$	530.07	$	250.79

(1) For the quarters ended June 30, 2021 and 2020, the number of shares acquired though employee surrender for statutory tax withholding were below rounding thresholds.

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Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Schedule of accumulated other comprehensive income

The changes in AOCI, net of tax, consisted of the following:

	For the Six Months Ended June 30, 2021
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized Gain (Loss) on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2020	$	(272)	$	(9,934)	$	(5,982)	$	(2,159)	$	(35,268)	$	(53,615)
Other comprehensive income (loss) before reclassifications	154		3,191		2,654		2,202		(7,246)		955
Loss reclassified from accumulated other comprehensive income	—		4,269		—		—		—		4,269
Balance as of June 30, 2021	$	(118)	$	(2,474)	$	(3,328)	$	43	$	(42,514)	$	(48,391)

	For the Six Months Ended June 30, 2020
			Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax		Unrealized Gain (Loss) on Net Investment Hedges, Net of Tax
(in thousands)	Unrealized (Loss) Gain on Investments, Net of Tax		Foreign Currency Exchange Contracts		Euro-Denominated Notes		Cross Currency Swaps		Cumulative Translation Adjustment		Total
Balance as of December 31, 2019	$	110	$	(736)	$	1,396	$	3,467	$	(50,419)	$	(46,182)
Other comprehensive (loss) income before reclassifications	(574)		5,538		(642)		2,602		(15,200)		(8,276)
Gain reclassified from accumulated other comprehensive income	—		(2,574)		—		—		—		(2,574)
Balance as of June 30, 2020	$	(464)	$	2,228	$	754	$	6,069	$	(65,619)	$	(57,032)

Summary of reclassifications out of other comprehensive income

The following tables present components and amounts reclassified out of AOCI to net income:

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Three Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(2,715)	$	1,812
	Tax expense (benefit)	(340)		339
	Gain (loss), net of tax	$	(2,375)	$	1,473

(in thousands)	Affected Line Item in the Statements of Income	Amounts Reclassified from AOCI For the Six Months Ended June 30,
		2021		2020
Gain (loss) on derivative instruments classified as cash flow hedges included in net income:
Foreign currency exchange contracts	Cost of revenue	$	(5,145)	$	3,153
	Tax expense (benefit)	(876)		579
	Gain (loss), net of tax	$	(4,269)	$	2,574

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of reconciliation of shares outstanding for basic and diluted earnings per share

The following is a reconciliation of weighted average shares outstanding for basic and diluted earnings per share:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	85,325	85,134	85,427	85,282
Dilutive effect of share-based payment awards	1,329	1,268	1,367	1,286
	86,654	86,402	86,794	86,568

Schedule of number of anti-dilutive stock options

The following table presents information concerning those anti-dilutive awards and options:

(in thousands)	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2021	2020	2021	2020
Weighted average number of shares underlying anti-dilutive awards	—	—	1	1
Weighted average number of shares underlying anti-dilutive options	135	270	102	218

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Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Summary of segment performance

The following is a summary of segment performance:

(in thousands)	For the Three Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	745,595	$	37,191	$	33,524	$	9,832	$	826,142
Income from operations	$	234,735	$	17,228	$	6,868	$	422	$	259,253
Interest expense, net									(7,522)
Income before provision for income taxes									251,731
Provision for income taxes									49,125
Net income									202,606
Less: Net income attributable to noncontrolling interest									24
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	202,582
2020
Revenue	$	566,100	$	28,116	$	32,244	$	11,132	$	637,592
Income from operations	$	167,969	$	12,258	$	8,249	$	4,772	$	193,248
Interest expense, net									(9,426)
Income before provision for income taxes									183,822
Provision for income taxes									34,826
Net income									148,996
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	148,940

(in thousands)	For the Six Months Ended June 30,
	CAG		Water		LPD		Other		Consolidated Total
2021
Revenue	$	1,438,362	$	71,231	$	72,794	$	21,462	$	1,603,849
Income from operations	$	447,945	$	32,000	$	20,676	$	6,254	$	506,875
Interest expense, net									(15,054)
Income before provision for income taxes									491,821
Provision for income taxes									84,926
Net income									406,895
Less: Net income attributable to noncontrolling interest									56
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	406,839
2020
Revenue	$	1,118,096	$	62,265	$	66,398	$	17,169	$	1,263,928
Income from operations	$	286,628	$	28,140	$	17,912	$	4,893	$	337,573
Interest expense, net									(16,978)
Income before provision for income taxes									320,595
Provision for income taxes									59,743
Net income									260,852
Less: Net income attributable to noncontrolling interest									85
Net income attributable to IDEXX Laboratories, Inc. stockholders									$	260,767

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of fair value of assets and liabilities measured on recurring basis

The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis by level within the fair value hierarchy:

(in thousands)
As of June 30, 2021	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2021
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,007	$	—	$	—	$	1,007
Cross currency swaps (3)	$	—	$	54	$	—	$	54
Foreign currency exchange contracts (3)	$	—	$	2,400	$	—	$	2,400
Liabilities
Foreign currency exchange contracts (3)	$	—	$	5,487	$	—	$	5,487
Deferred compensation(4)	$	1,007	$	—	$	—	$	1,007
Contingent payment- acquisitions	$	—	$	—	$	5,000	$	5,000

(in thousands)
As of December 31, 2020	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2020
Assets
Money market funds (1)	$	76	$	—	$	—	$	76
Equity mutual funds (2)	$	1,145	$	—	$	—	$	1,145
Foreign currency exchange contracts (3)	$	—	$	125	$	—	$	125
Liabilities
Cross currency swaps (3)	$	—	$	2,841	$	—	$	2,841
Foreign currency exchange contracts (3)	$	—	$	12,373	$	—	$	12,373
Deferred compensation(4)	$	1,145	$	—	$	—	$	1,145

(1)Money market funds with an original maturity of less than ninety days are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of June 30, 2021 and December 31, 2020, consisted of demand deposits.

(2)Equity mutual funds relate to a deferred compensation plan that was assumed as part of a previous business combination. This amount is included within other long-term assets. See footnote (4) below for a discussion of the related deferred compensation liability. 

(3)Cross currency swaps and foreign currency exchange contracts are included within other current assets, other long-term assets, accrued liabilities, or other long-term liabilities depending on the gain (loss) position and anticipated settlement date.  

(4)A deferred compensation plan assumed as part of a previous business combination is included within accrued liabilities and other long-term liabilities. The fair value of our deferred compensation plan is indexed to the performance of the underlying equity mutual funds discussed in footnote (2) above.

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Hedging Instruments (Tables)

6 Months Ended

Jun. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Details of net investment hedges and Income Statement impact of hedging instruments

The following tables present the effect of cash flow hedge accounting on our unaudited condensed consolidated statements of income and comprehensive income, and provide information regarding the location and amounts of pretax gains or losses of derivatives: 

(in thousands)		Three Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	336,834	$	258,250
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(2,715)	$	1,812

(in thousands)		Six Months Ended June 30,
		2021		2020
Financial statement line items in which effects of cash flow hedges are recorded	Cost of revenue	$	643,759	$	524,996
Foreign exchange contracts
Amount of (loss) gain reclassified from accumulated other comprehensive income into income		$	(5,145)	$	3,153

Schedule of hedging instruments

The fair values of hedging instruments and their respective classification on our unaudited condensed consolidated balance sheets and amounts subject to offset under master netting arrangements consisted of the following derivative instruments, unless otherwise noted: 

(in thousands)		Hedging Assets
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	1,676	$	125
Cross currency swaps	Other long-term assets	54		—
Foreign currency exchange contracts	Other long-term assets	724		—
Total derivative instruments presented as hedge instruments on the balance sheet		2,454		125
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	444	$	—

(in thousands)		Hedging Liabilities
		June 30, 2021		December 31, 2020
Derivatives and non-derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	5,349	$	12,373
Cross currency swaps	Other long-term liabilities	—		2,841
Foreign currency exchange contracts	Other long-term liabilities	138		—
Total derivative instruments presented as cash flow hedges on the balance sheet		5,487		15,214
Non-derivative foreign currency denominated debt designated as net investment hedge on the balance sheet(1)	Long-term debt	105,634		109,125
Total hedging instruments presented on the balance sheet		111,121		124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet		(2,010)		(125)
Net amount		$	109,111	$	124,214

(1) Amounts represent reported carrying amounts of our foreign currency denominated debt. See “Note 17. Fair Value Measurements” for information regarding the fair value of our long-term debt.

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Revenue Recognition (General Narrative) (Details)	6 Months Ended
	Jun. 30, 2021
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Payment term	30 days
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Payment term	60 days

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Revenue Recognition (Lease Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Lease revenue	$ 4.7	$ 3.5	$ 9.5	$ 7.7

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Revenue Recognition (Extended Warranties and Post-Contract Support) (Details) - Extended warranties and post contract support - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Post-contract support contract, term		12 months
Deferred revenue	$ 32.2	$ 32.2	$ 35.1
Deferred revenue recognized	3.1	18.0
Estimation of future revenues	$ 18.5	$ 18.5
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Extended product warranty, term		1 year
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Extended product warranty, term		5 years

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Revenue Recognition (Remaining Performance Obligation) (Details)	Jun. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | Extended warranties and post contract support
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	27.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | Up front customer loyalty programs and volume commitment programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	13.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | Instrument rebate programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	21.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	18.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Extended warranties and post contract support
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	38.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Up front customer loyalty programs and volume commitment programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	25.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Instrument rebate programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	31.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	30.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Extended warranties and post contract support
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	21.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Up front customer loyalty programs and volume commitment programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	23.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Instrument rebate programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	21.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	23.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Extended warranties and post contract support
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	9.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Up front customer loyalty programs and volume commitment programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	18.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Instrument rebate programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	13.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	16.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Extended warranties and post contract support
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	5.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Up front customer loyalty programs and volume commitment programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	21.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Instrument rebate programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	14.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	13.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period

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Revenue Recognition (SaaS Subscriptions) (Details)	6 Months Ended
	Jun. 30, 2021
Maximum
Disaggregation of Revenue [Line Items]
SaaS Subscription, term of contract	2 years

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Revenue Recognition (Up-Front Customer Loyalty Programs) (Details) - Up front customer loyalty programs - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Capitalized customer acquisition costs	$ 155.3	$ 155.3	$ 148.1
Recognized as a reduction of revenue	$ 11.1	$ 22.6

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Revenue Recognition (Volume Commitment Programs) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Volume commitment programs
Disaggregation of Revenue [Line Items]
Commitment contract assets	$ 134.7	$ 134.7	$ 115.5
Commitment contract assets reclassified to accounts receivable	6.7	13.6
Up front customer loyalty programs and volume commitment programs
Disaggregation of Revenue [Line Items]
Estimation of future revenues	$ 2,500.0	$ 2,500.0

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Revenue Recognition (Instrument Rebate Programs) (Details) - Instrument rebate programs - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 35.4	$ 35.4	$ 39.3
Deferred revenue recognized	$ 3.6	$ 7.5

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Revenue Recognition (Reagent Rental Programs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Lease receivable asset	$ 13,000		$ 13,000		$ 11,100
Lease receivable asset reclassified to accounts receivable	600		1,100
Impairment charge			3,795	$ 0
Operating-type reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Instruments transferred to property and equipment	3,300	$ 1,700	5,800	$ 4,100
Impairment charge	3,800		3,800
Reagent rental programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimation of future revenues	$ 38,400		$ 38,400

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Revenue Recognition (Disaggregation of Revenue by Major Product and Service Categories) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 826,142	$ 637,592	$ 1,603,849	$ 1,263,928
CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	745,595	566,100	1,438,362	1,118,096
Water segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	37,191	28,116	71,231	62,265
LPD segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	33,524	32,244	72,794	66,398
Other segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	9,832	11,132	21,462	17,169
Cag Diagnostics recurring revenue | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	661,300	510,254	1,278,580	998,179
IDEXX VetLab consumables | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	256,352	196,061	502,444	384,774
Rapid assay products | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	83,887	64,658	153,498	122,088
Reference laboratory diagnostic and consulting services | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	293,675	228,816	569,456	449,077
CAG Diagnostics services and accessories | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	27,386	20,719	53,182	42,240
CAG Diagnostics capital - instruments | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	35,054	18,871	66,244	42,704
Veterinary software, services and diagnostic imaging systems | CAG segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 49,241	$ 36,975	$ 93,538	$ 77,213

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Revenue Recognition (Disaggregation of Revenue by Principal Geographic Area, Based on Customers' Domiciles) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 826,142	$ 637,592	$ 1,603,849	$ 1,263,928
United States
Disaggregation of Revenue [Line Items]
Total revenue	515,238	405,998	987,876	802,781
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	171,553	123,969	342,803	253,735
Asia Pacific Region
Disaggregation of Revenue [Line Items]
Total revenue	83,624	71,750	168,406	135,262
Canada
Disaggregation of Revenue [Line Items]
Total revenue	39,337	25,357	72,795	49,604
Latin America
Disaggregation of Revenue [Line Items]
Total revenue	$ 16,390	$ 10,518	$ 31,969	$ 22,546

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Revenue Recognition (Costs to Obtain a Contract) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Deferred commission costs	$ 18.4	$ 18.4	$ 17.5
Commissions expense recognized	$ 1.5	$ 3.0
Minimum
Disaggregation of Revenue [Line Items]
Amortization period	3 years	3 years
Maximum
Disaggregation of Revenue [Line Items]
Amortization period	7 years	7 years

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Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 353,842		$ 243,347
ezyVet
Business Acquisition [Line Items]
Consideration transferred	157,200
Contingent payment	5,000
Net tangible assets	3,200
Goodwill	109,400
Acquisition expenses	1,800
ezyVet | Customer-related intangibles
Business Acquisition [Line Items]
Net tangible assets	$ 32,000
Weighted average useful life of finite-lived intangible assets	10 years
ezyVet | Technology-related intangibles
Business Acquisition [Line Items]
Net tangible assets	$ 8,400
Weighted average useful life of finite-lived intangible assets	6 years
ezyVet | Trademarks
Business Acquisition [Line Items]
Net tangible assets	$ 2,400
Weighted average useful life of finite-lived intangible assets	14 years
ezyVet | Non-compete agreements
Business Acquisition [Line Items]
Net tangible assets	$ 1,800
Weighted average useful life of finite-lived intangible assets	5 years
Reference Laboratory | Switzerland
Business Acquisition [Line Items]
Consideration transferred		$ 5,500
Goodwill		1,800
Contingent payment and holdback		1,100
Liabilities		$ 600
Reference Laboratory | Customer relationships | Switzerland
Business Acquisition [Line Items]
Weighted average useful life of finite-lived intangible assets		9 years
Intangible assets acquired		$ 4,300

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Share-Based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Payment Arrangement [Abstract]
Fair value of share-based compensation awards, granted	$ 4.0	$ 2.3	$ 48.3	$ 38.6
Unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding	80.9		$ 80.9
Weighted average recognition period for unrecognized compensation expense, in years			1 year 9 months 18 days
Share-based compensation expense	$ 9.6	$ 7.8	$ 18.5	$ 15.1

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Share-Based Compensation (Assumptions Used) (Details) - $ / shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Share-based Payment Arrangement [Abstract]
Share price at grant (in USD per share)	$ 542.57	$ 288.49
Share price at exercise (in USD per share)	$ 546.43	$ 288.49
Expected stock price volatility	31.00%	27.00%
Expected term, in years	6 years 2 months 12 days	6 years
Risk-free interest rate	0.70%	1.40%
Weighted average fair value of options granted (in USD per share)	$ 167.94	$ 84.09

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Credit Losses (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts receivable allowance for credit losses	$ 6.4	$ 6.8
Percent of accounts receivable not past due	92.00%	88.00%
Percent of accounts receivable past due	8.00%	12.00%
Accounts receivable, noncurrent, threshold period past due	60 days	60 days
Reserve for contract assets and sales-type leases	$ 4.0	$ 3.7
Greater than 60 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Percent of accounts receivable past due	1.00%	1.50%

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Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventory, Net [Abstract]
Raw materials	$ 59,115	$ 45,986
Work-in-process	25,103	20,374
Finished goods	157,174	143,513
Inventories	$ 241,392	$ 209,873

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Leases (Maturities of Operating Lease Liabilities) (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Leases [Abstract]
2021 (remainder of year)	$ 9,945
2022	23,213
2023	18,917
2024	13,962
2025	10,697
Thereafter	47,114
Total lease payments	123,848
Less imputed interest	(16,283)
Total	$ 107,565

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Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of operating leases liabilities	$ 11,914	$ 9,346
Right-of-use assets obtained in exchange for operating lease obligations, net of early lease terminations	24,427	$ 10,738
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	104,723		$ 91,171
Total	107,565
ezyVet
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	7,900
Total	$ 7,900

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Other Current and Long-Term Assets (Schedule Of Other Current Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Assets, Noncurrent [Abstract]
Customer acquisition costs	$ 46,982	$ 43,751
Prepaid expenses	33,227	34,556
Contract assets, net	27,695	23,837
Taxes receivable	17,383	19,476
Deferred sales commissions	6,113	5,738
Other assets	13,992	10,150
Other current assets	$ 145,392	$ 137,508

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Other Current and Long-Term Assets (Schedule Of Other Long-term Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Assets, Noncurrent [Abstract]
Customer acquisition costs	$ 108,317	$ 104,369
Contract assets, net	106,962	91,681
Deferred income taxes	26,770	31,549
Deferred sales commissions	12,291	11,719
Investment in long-term product supply arrangements	10,489	12,065
Taxes receivable	2,450	6,329
Other assets	38,067	31,883
Other long-term assets	$ 305,346	$ 289,595

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Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Accrued employee compensation and related expenses	$ 136,331	$ 167,649
Accrued expenses	112,388	112,526
Accrued customer incentives and refund obligations	85,299	75,064
Accrued taxes	39,428	42,676
Current lease liabilities	$ 19,235	$ 17,733
Operating lease, liability, current, statement of financial position [extensible list]	Accrued liabilities	Accrued liabilities
Accrued liabilities	$ 392,681	$ 415,648

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Accrued Liabilities (Schedule Of Other Long-term Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Accrued taxes	$ 58,129	$ 60,313
Other accrued long-term expenses	26,914	25,291
Other long-term liabilities	$ 85,043	$ 85,604

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Repurchases of Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Equity [Abstract]
Shares repurchased in the open market (in shares)	341	0	618	721
Shares acquired through employee surrender for statutory tax withholding (in shares)	0	0	28	30
Total shares repurchased (in shares)	341	0	646	751
Cost of shares repurchased in the open market	$ 188,409	$ 0	$ 327,622	$ 179,623
Cost of shares for employee surrenders	3	65	14,986	8,669
Total cost of shares	$ 188,412	$ 65	$ 342,608	$ 188,292
Average cost per share - open market repurchases (in USD per share)	$ 552.08	$ 0	$ 529.45	$ 249.20
Average cost per share - employee surrenders (in USD per share)	550.59	312.19	544.08	288.94
Average cost per share - total (in USD per share)	$ 552.08	$ 312.19	$ 530.07	$ 250.79

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Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate	19.50%	18.90%	17.30%	18.60%

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Accumulated Other Comprehensive Income (Schedule Of AOCI) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	$ 632,795	$ 177,825
Other comprehensive income (loss) before reclassifications	955	(8,276)
Gain (loss) reclassified from accumulated other comprehensive income	4,269	(2,574)
Balance end of period	748,223	273,400
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(53,615)	(46,182)
Balance end of period	(48,391)	(57,032)
Unrealized Gain (Loss) on Investments, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(272)	110
Other comprehensive income (loss) before reclassifications	154	(574)
Gain (loss) reclassified from accumulated other comprehensive income	0	0
Balance end of period	(118)	(464)
Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax, Foreign Currency Exchange Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(9,934)	(736)
Other comprehensive income (loss) before reclassifications	3,191	5,538
Gain (loss) reclassified from accumulated other comprehensive income	4,269	(2,574)
Balance end of period	(2,474)	2,228
Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax, Euro-Denominated Notes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(5,982)	1,396
Other comprehensive income (loss) before reclassifications	2,654	(642)
Gain (loss) reclassified from accumulated other comprehensive income	0	0
Balance end of period	(3,328)	754
Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax, Cross Currency Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(2,159)	3,467
Other comprehensive income (loss) before reclassifications	2,202	2,602
Gain (loss) reclassified from accumulated other comprehensive income	0	0
Balance end of period	43	6,069
Cumulative Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(35,268)	(50,419)
Other comprehensive income (loss) before reclassifications	(7,246)	(15,200)
Gain (loss) reclassified from accumulated other comprehensive income	0	0
Balance end of period	$ (42,514)	$ (65,619)

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Accumulated Other Comprehensive Income (Schedule of Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	$ 336,834		$ 258,250		$ 643,759	$ 524,996
Tax expense (benefit)	49,125		34,826		84,926	59,743
Gain (loss), net of tax	202,606	$ 204,289	148,996	$ 111,856	406,895	260,852
Gain (loss) on derivative instruments classified as cash flow hedges included in net income, Foreign currency exchange contracts | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(2,715)		1,812		(5,145)	3,153
Tax expense (benefit)	(340)		339		(876)	579
Gain (loss), net of tax	$ (2,375)		$ 1,473		$ (4,269)	$ 2,574

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Earnings Per Share (Schedule Of Reconciliation Of Shares Outstanding For Basic And Diluted Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Shares outstanding for basic earnings per share:
Shares outstanding for basic earnings per share (in shares)	85,325	85,134	85,427	85,282
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share (in shares)	85,325	85,134	85,427	85,282
Dilutive effect of share-based payment awards (in shares)	1,329	1,268	1,367	1,286
Shares outstanding for diluted earnings per share (in shares)	86,654	86,402	86,794	86,568

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Earnings Per Share (Schedule Of Number Of Anti-Dilutive Stock Options) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of shares underlying anti-dilutive shares (in shares)	0	0	1	1
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of shares underlying anti-dilutive shares (in shares)	135	270	102	218

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Commitments, Contingencies and Guarantees (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Damages sought	$ 50.0
Loss contingency accrual		$ 27.5

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Segment Reporting (Summary of Segment Performance) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 826,142		$ 637,592		$ 1,603,849	$ 1,263,928
Income from operations	259,253		193,248		506,875	337,573
Interest expense, net	(7,522)		(9,426)		(15,054)	(16,978)
Income before provision for income taxes	251,731		183,822		491,821	320,595
Provision for income taxes	49,125		34,826		84,926	59,743
Net income	202,606	$ 204,289	148,996	$ 111,856	406,895	260,852
Less: Net income attributable to noncontrolling interest	24		56		56	85
Net income attributable to IDEXX Laboratories, Inc. stockholders	202,582		148,940		406,839	260,767
CAG
Segment Reporting Information [Line Items]
Revenue	745,595		566,100		1,438,362	1,118,096
Income from operations	234,735		167,969		447,945	286,628
Water
Segment Reporting Information [Line Items]
Revenue	37,191		28,116		71,231	62,265
Income from operations	17,228		12,258		32,000	28,140
LPD
Segment Reporting Information [Line Items]
Revenue	33,524		32,244		72,794	66,398
Income from operations	6,868		8,249		20,676	17,912
Other
Segment Reporting Information [Line Items]
Revenue	9,832		11,132		21,462	17,169
Income from operations	$ 422		$ 4,772		$ 6,254	$ 4,893

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Estimated fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value disclosure	$ 987.8	$ 1,000.0
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value disclosure	$ 905.6	$ 909.1

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Fair Value Measurements (Schedule of Assets and Liabilities) (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 76	$ 76
Equity mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity mutual fund	1,007	1,145
Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	54
Derivative liability		2,841
Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	2,400	125
Derivative liability	5,487	12,373
Deferred compensation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation	1,007	1,145
Contingent Payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payment- acquisitions	5,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	76	76
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity mutual fund	1,007	1,145
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0
Derivative liability		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Deferred compensation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation	1,007	1,145
Quoted Prices in Active Markets for Identical Assets (Level 1) | Contingent Payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payment- acquisitions	0
Significant Other Observable Inputs (Level 2) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Significant Other Observable Inputs (Level 2) | Equity mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity mutual fund	0	0
Significant Other Observable Inputs (Level 2) | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	54
Derivative liability		2,841
Significant Other Observable Inputs (Level 2) | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	2,400	125
Derivative liability	5,487	12,373
Significant Other Observable Inputs (Level 2) | Deferred compensation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation	0	0
Significant Other Observable Inputs (Level 2) | Contingent Payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payment- acquisitions	0
Significant Unobservable Inputs (Level 3) | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Significant Unobservable Inputs (Level 3) | Equity mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity mutual fund	0	0
Significant Unobservable Inputs (Level 3) | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0
Derivative liability		0
Significant Unobservable Inputs (Level 3) | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Significant Unobservable Inputs (Level 3) | Deferred compensation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation	0	$ 0
Significant Unobservable Inputs (Level 3) | Contingent Payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payment- acquisitions	$ 5,000

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Hedging Instruments (Narrative) (Details) $ in Thousands			3 Months Ended		6 Months Ended
	Jun. 18, 2025 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 EUR (€)	Dec. 31, 2020 USD ($)	Jun. 30, 2015 EUR (€)
Derivative [Line Items]
Estimated net amount of losses expected to be reclassified out of accumulated other comprehensive income and into earnings within next 12 months					$ 2,900
Cash flow hedge, hedge percentage of estimated exposure from intercompany products purchases and sales					85.00%
General duration of foreign currency exchange contracts					24 months
Derivative, notional amount			$ 210,200		$ 210,200			$ 202,700
Unrealized gain (loss) on Euro-denominated notes, net of tax			(994)	$ (1,689)	2,654	$ (642)
Unrealized gain (loss) on cross currency swaps, net of tax			(1,106)	(1,447)	2,202	2,602
Excluded component recognized as reduction of interest			$ 700	$ 700	$ 1,400	$ 1,300
Series C Senior Note
Derivative [Line Items]
Debt instrument, face amount | €									€ 88,900,000
Stated interest rate									1.785%
Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps
Derivative [Line Items]
Derivative, notional amount | €							€ 90,000,000.0
Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps
Derivative [Line Items]
Derivative, notional amount | €							€ 15,000,000
Scenario, Forecast | Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps
Derivative [Line Items]
Proceeds from hedge		$ 104,500
Scenario, Forecast | Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps
Derivative [Line Items]
Proceeds from hedge	$ 17,500

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Hedging Instruments (Derivatives Designated In Cash Flow Hedging Relationships) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Foreign Currency Fair Value Hedge Derivative [Line Items]
Cost of revenue	$ 336,834	$ 258,250	$ 643,759	$ 524,996
Foreign currency exchange contracts | Costs of revenue
Foreign Currency Fair Value Hedge Derivative [Line Items]
Amount of (loss) gain reclassified from accumulated other comprehensive income into income	$ (2,715)	$ 1,812	$ (5,145)	$ 3,153

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Hedging Instruments (Schedule Of Fair Values And Balance Sheet Classifications Of Derivatives Designated As Hedging Instruments) (Details) - Derivatives and non-derivatives designated as hedging instruments - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	$ 2,454	$ 125
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,010)	(125)
Net amount	444	0
Total hedging instruments presented on the balance sheet	111,121	124,339
Gross amounts subject to master netting arrangements not offset on the balance sheet	(2,010)	(125)
Net amount	109,111	124,214
Non-derivative foreign currency denominated debt designated as net investment hedge on the balance sheet | Long-term debt
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	105,634	109,125
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	5,487	15,214
Cash Flow Hedging | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	1,676	125
Cash Flow Hedging | Foreign currency exchange contracts | Other long-term assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	724	0
Cash Flow Hedging | Foreign currency exchange contracts | Accrued liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	5,349	12,373
Cash Flow Hedging | Foreign currency exchange contracts | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	138	0
Cash Flow Hedging | Cross currency swaps | Other long-term assets
Derivatives, Fair Value [Line Items]
Total derivative instruments presented as hedge instruments on the balance sheet	54	0
Cash Flow Hedging | Cross currency swaps | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Total hedging instruments presented on the balance sheet	$ 0	$ 2,841