10-Q

UNITED STATES 

SECURITIES AND EXCHANGE COMMISSION 

WASHINGTON, D.C. 20549 

FORM 10-Q 

(Mark One)

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

For the quarterly period ended March 31, 2013 

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)

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 x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, 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 and post such files). Yes x No o

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

Large accelerated filer	x		Accelerated filer	o
Non-accelerated filer	o	(Do not check if a smaller reporting company)	Smaller reporting company	o

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

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, was 54,102,977 on April 12, 2013.

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 March 31, 2013 andDecember 31, 2012	3
	Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2013 and 2012	4
	Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2013 and 2012	5
	Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2013 and 2012	6
	Notes to Condensed Consolidated Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 4.	Controls and Procedures	28
	PART II—OTHER INFORMATION
Item 1.	Legal Proceedings	28
Item 1A.	Risk Factors	28
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	35
Item 5.	Other Information	36
Item 6.	Exhibits	37
Signatures		38
Exhibit Index

PART I— FINANCIAL INFORMATION

Item 1. Financial Statements. 

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except per share amounts)

(Unaudited)

	March 31,		December 31,
	2013		2012
ASSETS
Current Assets:
Cash and cash equivalents	$	228,364	$	223,986
Accounts receivable, net of reserves of $3,053 in 2013 and $2,632 in 2012		158,988		138,324
Inventories		148,242		140,946
Deferred income tax assets		25,719		27,714
Other current assets		33,082		38,567
Total current assets		594,395		569,537
Long-Term Assets:
Property and equipment, net		253,742		245,177
Goodwill		172,459		174,994
Intangible assets, net		61,036		62,833
Other long-term assets, net		51,006		51,061
Total long-term assets		538,243		534,065
TOTAL ASSETS	$	1,132,638	$	1,103,602
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Accounts payable	$	38,716	$	35,288
Accrued liabilities		118,470		137,746
Line of credit		260,000		212,000
Current portion of long-term debt		1,122		1,107
Current portion of deferred revenue		21,269		20,192
Total current liabilities		439,577		406,333
Long-Term Liabilities:
Deferred income tax liabilities		22,955		23,028
Long-term debt, net of current portion		1,141		1,394
Long-term deferred revenue, net of current portion		12,851		12,692
Other long-term liabilities		24,819		23,898
Total long-term liabilities		61,766		61,012
Total liabilities		501,343		467,345
Commitments and Contingencies (Note 13)
Stockholders’ Equity:
Common stock, $0.10 par value: Authorized: 120,000 shares;  Issued: 100,608 and 100,160 shares in 2013 and 2012, respectively		10,061		10,016
Additional paid-in capital		779,261		757,214
Deferred stock units: Outstanding: 119 units in 2013 and 2012		4,815		4,630
Retained earnings		1,350,453		1,305,593
Accumulated other comprehensive income		11,687		15,954
Treasury stock, at cost: 46,381 and 45,652 shares in 2013 and 2012, respectively		(1,525,023)		(1,457,184)
Total IDEXX Laboratories, Inc. stockholders’ equity		631,254		636,223
Noncontrolling interest		41		34
Total stockholders’ equity		631,295		636,257
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,132,638	$	1,103,602
The accompanying notes are an integral part of these condensed consolidated financial statements.

3

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)

(Unaudited)

	For the Three Months Ended March 31,
		2013		2012
Revenue:
Product revenue	$	205,768	$	204,167
Service revenue		126,338		118,509
Total revenue		332,106		322,676
Cost of Revenue:
Cost of product revenue		74,150		75,212
Cost of service revenue		73,982		72,690
Total cost of revenue		148,132		147,902
Gross profit		183,974		174,774
Expenses:
Sales and marketing		59,397		57,632
General and administrative		41,631		36,178
Research and development		21,758		20,557
Income from operations		61,188		60,407
Interest expense		(835)		(1,193)
Interest income		444		436
Income before provision for income taxes		60,797		59,650
Provision for income taxes		15,930		18,916
Net income		44,867		40,734
Less: Net income (loss) attributable to noncontrolling interest		7		(9)
Net income attributable to IDEXX Laboratories, Inc. stockholders	$	44,860	$	40,743
Earnings per Share:
Basic	$	0.82	$	0.74
Diluted	$	0.81	$	0.72
Weighted Average Shares Outstanding:
Basic		54,588		55,208
Diluted		55,490		56,439
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, except per share amounts)

(Unaudited)

	For the Three Months Ended March 31,
		2013		2012
Net income	$	44,867	$	40,734
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		(8,447)		5,628
Unrealized gain on investments, net of tax expense of $42 in 2013 and $65 in 2012		72		111
Unrealized gain (loss) on derivative instruments:
Unrealized gain (loss), net of tax expense (benefit) of $1,699 in 2013 and ($434) in 2012		4,118		(906)
Less: reclassification adjustment for gains included in net income, net of tax benefit (expense) of $8 in 2013 and ($341) in 2012		(10)		(795)
Unrealized gain (loss) on derivative instruments		4,108		(1,701)
Other comprehensive (loss) income, net of tax		(4,267)		4,038
Comprehensive income		40,600		44,772
Less: comprehensive income (loss) attributable to noncontrolling interest		7		(9)
Comprehensive income attributable to IDEXX Laboratories, Inc.	$	40,593	$	44,781
The accompanying notes are an integral part of these condensed consolidated financial statements.

5

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(Unaudited)

	For the Three Months Ended March 31,
		2013		2012
Cash Flows from Operating Activities:
Net income	$	44,867	$	40,734
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		13,513		12,705
Loss on disposal of property and equipment		27		83
Increase in deferred compensation liability		114		176
Provision for uncollectible accounts		644		412
Provision for deferred income taxes		1,169		462
Share-based compensation expense		3,949		3,809
Tax benefit from share-based compensation arrangements		(5,310)		(4,518)
Changes in assets and liabilities:
Accounts receivable		(23,722)		(17,818)
Inventories		(8,472)		(8,687)
Other assets		6,301		(3,165)
Accounts payable		3,654		3,990
Accrued liabilities		(16,919)		(14,698)
Deferred revenue		869		1,699
Net cash provided by operating activities		20,684		15,184
Cash Flows from Investing Activities:
Purchases of property and equipment		(19,761)		(9,446)
Proceeds from disposition of pharmaceutical product lines		3,500		3,000
Proceeds from sale of property and equipment		-		2
Acquisitions of intangible assets		(659)		(900)
Net cash used by investing activities		(16,920)		(7,344)
Cash Flows from Financing Activities:
Borrowings on revolving credit facilities, net		48,000		11,000
Payment of notes payable		(238)		(224)
Repurchases of common stock		(63,778)		(27,630)
Proceeds from exercises of stock options and employee stock purchase plans		12,958		5,772
Tax benefit from share-based compensation arrangements		5,310		4,518
Net cash provided (used) by financing activities		2,252		(6,564)
Net effect of changes in exchange rates on cash		(1,638)		320
Net increase in cash and cash equivalents		4,378		1,596
Cash and cash equivalents at beginning of period		223,986		183,895
Cash and cash equivalents at end of period	$	228,364	$	185,491
The accompanying notes are an integral part of these condensed consolidated financial statements.

2

6

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE 1.      BASIS OF PRESENTATION AND PRINCIPLES OF CONSOLIDATION 

The accompanying condensed consolidated financial statements of IDEXX Laboratories, Inc. (“IDEXX,” the “Company,” “we” or “our”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“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 Form 10-Q. 

The accompanying condensed consolidated financial statements include the accounts of IDEXX Laboratories, Inc. and our wholly-owned and majority-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. 

The accompanying 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, 2012 was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. The results of operations for the three months ended March 31, 2013 are not necessarily indicative of the results to be expected for the full year or any future period. These condensed consolidated financial statements should be read in conjunction with this Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 and our Annual Report on Form 10-K for the year ended December 31, 2012 filed with the Securities and Exchange Commission.

Certain reclassifications have been made to the prior year condensed consolidated financial statements to conform to the current year presentation. Reclassifications had no material impact on previously reported results of operations, financial position or cash flows.

Note 2.      ACCOUNTING POLICIES  

Significant Accounting Policies 

The significant accounting policies used in preparation of these condensed consolidated financial statements for the three months ended March 31, 2013 are consistent with those discussed in Note 2 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012. 

New Accounting Pronouncements Adopted 

 In December 2011, the Financial Accounting Standards Board (“FASB”) issued an amendment to the accounting guidance for disclosure of offsetting assets and liabilities and related arrangements. The amendment expands the disclosure requirements so that entities are now required to disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. The amendment is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013, and shall be applied retrospectively. The adoption of this accounting pronouncement did not have a material impact on our financial statement disclosures. See Note 16 for additional information regarding derivative instruments subject to master netting arrangements.

In February 2013, the FASB issued an amendment to the accounting guidance for the reporting of amounts reclassified out of accumulated other comprehensive income (“AOCI”). The amendment expands the existing disclosure by requiring entities to present information about significant items reclassified out of AOCI by component. In addition, an entity is required to provide information about the effects on net income of significant amounts reclassified out of each component of AOCI to net income either on the face of the statement where net income is presented or as a separate disclosure in the notes of the financial statements. The amendment is effective prospectively for annual or interim reporting periods beginning after December 15, 2012. The adoption of this accounting pronouncement did not have a material impact on our financial statement disclosures. See Note 11 for additional information regarding accumulated other comprehensive income.

7

NOTE 3.      SHARE-BASED COMPENSATION

The fair value of options, restricted stock units, deferred stock units and employee stock purchase rights awarded during the three months ended March 31, 2013 and 2012 totaled$16.6 million and $15.7 million, respectively. The total unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding at March 31, 2013 was $42.4 million, which will be recognized over a weighted average period of approximately 2.3 years.

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the 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 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 present intention to pay a dividend; 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 Three Months Ended March 31,
		2013			2012
Expected stock price volatility		33	%		34	%
Expected term, in years		4.6			4.6
Risk-free interest rate		0.9	%		0.8	%
Weighted average fair value of options granted	$	26.58		$	26.36

Note 4.      Inventories

Inventories include material, labor and overhead, and are stated at the lower of cost (first-in, first-out) or market. The components of inventories were as follows (in thousands):

	March 31,		December 31,
		2013		2012
Raw materials	$	26,653	$	26,986
Work-in-process		15,247		16,031
Finished goods		106,342		97,929
	$	148,242	$	140,946

Note 5.       Goodwill and Intangible Assets, NET 

The decrease in goodwill during the three months ended March 31, 2013 resulted from changes in foreign currency exchange rates. The decrease in intangible assets other than goodwill during the three months ended March 31, 2013 resulted from the continued amortization of our intangible assets and changes in foreign currency exchange rates, partly offset by the impact of the acquisition of intangible assets.

We acquired a customer list in February 2013 for a purchase price of $1.0 million, which was allocated entirely to intangible assets other than goodwill. All assets acquired in connection with the acquisition were assigned to our Companion Animal Group (“CAG”) segment.

8

NOTE 6.      Other NONCURRENT ASSETS

Other noncurrent assets consisted of the following (in thousands):  

	March 31,		December 31,
		2013		2012
Investment in long-term product supply arrangements	$	10,079	$	10,324
Customer acquisition costs, net		21,187		21,795
Other assets		19,740		18,942
	$	51,006	$	51,061

Note 7.      Accrued liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31,		December 31,
	2013		2012
Accrued expenses	$	44,144	$	43,026
Accrued employee compensation and related expenses		39,078		53,408
Accrued taxes		10,173		14,945
Accrued customer programs		25,075		26,367
	$	118,470	$	137,746

NOTE 8.      WARRANTY RESERVES

We provide a standard twelve month warranty on all instruments sold. We recognize the cost of instrument warranties in cost of product revenue at the time revenue is recognized based on the estimated cost to repair the instrument over its warranty period. Cost of product revenue reflects not only estimated warranty expense for instruments sold in the current period, but also any changes in estimated warranty expense for the portion of the aggregate installed base that is under warranty. Estimated warranty expense is based on a variety of inputs, including historical instrument performance in the customers’ environment, historical costs incurred in servicing instruments and projected instrument reliability. Should actual service rates or costs differ from our estimates, revisions to the estimated warranty liability would be required. The liability for warranties is included in accrued liabilities in the accompanying condensed consolidated balance sheets.

The following is a summary of changes in accrued warranty reserves for the three months endedMarch 31, 2013 and 2012(in thousands):  

	For the Three Months Ended March 31,
		2013		2012
Balance, beginning of period	$	1,583	$	1,693
Provision for warranty expense		321		561
Change in estimate, balance beginning of period		(132)		(60)
Settlement of warranty liability		(428)		(621)
Balance, end of period	$	1,344	$	1,573

Note 9.      Repurchases of common STOCK

The following is a summary of our open market common stock repurchases for the three months ended March 31, 2013 and 2012(in thousands, except per share amounts):

	For the Three Months Ended March 31,
	2013		2012
Shares repurchased		687		333
Total cost of shares repurchased	$	63,778	$	27,630
Average cost per share	$	92.82	$	82.85

9

We primarily acquire shares by means of repurchases in the open market. However, we also acquire shares that are surrendered by employees in payment for the minimum required withholding taxes due on the vesting of restricted stock units and the settlement of deferred stock units. We acquired 45,181 shares having a total cost of $4.1 million in connection with such employee surrenders during the three months ended March 31, 2013 compared to 48,574 shares having a total cost of $4.2 million during the three months ended March 31, 2012.

Weissue 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 both the three months ended March 31, 2013 and 2012 was not material.

Note 10.      Income Taxes 

Our effective income tax rate was  26.2% and 31.7% for the three months ended March 31, 2013 and 2012, respectively. During the quarter ended March 31, 2013, federal legislation was enacted within the U.S. that retroactively allowed a research and development (R&D) tax credit for all of 2012 and extended the R&D credit through the twelve months ending December 31, 2013.  Because this legislation was enacted in 2013, the full benefit of the credit related to the prior year’s activities was recognized during the three months ended March 31, 2013.  In the absence of the 2012 R&D credit, our effective tax rate for the three months ended March 31, 2013 would have been 30.6%, or 4.4% higher. The remaining decrease in our effective income tax rate was due to the impact of the U.S. R&D tax benefit related to research activities occurring during the three months ended March 31, 2013. 

Note 11.    ACCUMULATED OTHER Comprehensive Income

The changes in accumulated other comprehensive income, net of tax, for the three months ended March 31, 2013 consisted of the following (in thousands): 

For the Three Months Ended March 31, 2013		Unrealized Loss on Investments, Net of Tax		Unrealized Gain (Loss) on Derivative Instruments, Net of Tax		Cumulative Translation Adjustment		Total
Balance as of December 31, 2012	$	(171)	$	(2,070)	$	18,195	$	15,954
Other comprehensive income (loss) before reclassifications		72		4,118		(8,447)		(4,257)
Gains reclassified from accumulated other comprehensive income		-		(10)		-		(10)
Balance as of March 31, 2013	$	(99)	$	2,038	$	9,748	$	11,687

The following is a summary of reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2013 and 2012 (in thousands):

Details about Accumulated Other Comprehensive Income Components	Affected Line Item in the Statement Where Net Income is Presented	Amounts Reclassified from Accumulated Other Comprehensive Income For the Three Months Ended March 31,
		2013	2012
Gains (losses) on derivative instruments included in net income:
Foreign currency exchange contracts	Cost of revenue	109	1,486
Interest rate swaps	Interest expense	(107)	(350)
	Total gains before tax	2	1,136
	Tax (benefit) expense	(8)	341
	Gains, net of tax	10	795

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Note 12.    Earnings per Share

Basic earnings per share is computed by dividing net income attributable to IDEXX Laboratories, Inc. 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, the total unrecognized compensation expense for unvested share-based compensation awards and the excess tax benefits resulting from share-based compensation tax deductions in excess of the related expense recognized for financial reporting purposes, 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 4 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012 for additional information regarding deferred stock units.

The following is a reconciliation of shares outstanding for basic and diluted earnings per share for the three months ended March 31, 2013 and 2012 (in thousands):

	For the Three Months Ended March 31,
	2013	2012
Shares outstanding for basic earnings per share:	54,588	55,208
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	54,588	55,208
Dilutive effect of share-based payment awards	902	1,231
	55,490	56,439

Certain options to acquire shares and restricted stock units 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 options and restricted stock unitsfor the three months ended March 31, 2013 and 2012 (in thousands):

	For the Three Months Ended March 31,
	2013	2012
Weighted average number of shares underlying anti-dilutive options	441	618
Weighted average number of shares underlying anti-dilutive restricted stock units	0	50

Note 13.    Commitments, Contingencies and Guarantees

Significant commitments, contingencies and guarantees at March 31, 2013 are consistent with those discussed in Note 14 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012.

Note 14.     Segment Reporting

Prior to January 1, 2013, we operated primarily through three business segments: diagnostic and information technology-based products and services for the veterinary market, which we continue to refer to as CAG, water quality products (“Water”) and diagnostic products for livestock and poultry health, which we referred to as Livestock and Poultry Diagnostics. We also operated two smaller operating segments that comprised products for milk quality and safety (“Dairy”) and products for the human point-of-care medical diagnostics market (“OPTI Medical”). Financial information about our Dairy and OPTI Medical operating segments was combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they did not meet the quantitative or qualitative thresholds for reportable segments.

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We have combined the management of our Livestock and Poultry Diagnostics, and Dairy lines of business to more effectively realize the market synergies between the product lines and to achieve operational efficiencies. We refer to this newly created segment as Livestock, Poultry and Dairy (“LPD”). Our OPTI Medical operating segment remains combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they do not meet the quantitative or qualitative thresholds for reportable segments.  The segment income (loss) from operations discussed within this report for the three months ended March 31, 2012 has been retrospectively revised to reflect this change in the composition of our reportable segments.

The following is a summary of segment performance for the three months ended March 31, 2013 and 2012(in thousands):

	For the Three Months Ended March 31,
	CAG		Water		LPD		Other		Unallocated Amounts		Consolidated Total
2013
Revenue	$	276,941	$	20,666	$	28,039	$	6,460	$	-	$	332,106
Income (loss) from operations	$	51,309	$	8,355	$	4,836	$	435	$	(3,747)	$	61,188
Interest expense, net												(391)
Income before provision for income taxes												60,797
Provision for income taxes												15,930
Net income												44,867
Less: Net income attributable to noncontrolling interest												7
Net income attributable to IDEXX Laboratories, Inc. stockholders											$	44,860
2012
Revenue	$	268,073	$	19,582	$	29,116	$	5,905	$	-	$	322,676
Income (loss) from operations	$	46,918	$	8,295	$	6,017	$	(213)	$	(610)	$	60,407
Interest expense, net												(757)
Income before provision for income taxes												59,650
Provision for income taxes												18,916
Net income												40,734
Less: Net loss attributable to noncontrolling interest												(9)
Net income attributable to IDEXX Laboratories, Inc. stockholders											$	40,743

The following is a summary of revenue by product and service category for the three months ended March 31, 2013 and 2012  (in thousands):

	For the Three Months Ended March 31,
		2013		2012
CAG segment revenue:
VetLab® instruments and consumables	$	103,671	$	101,997
Rapid assay products		44,083		43,664
Reference laboratory diagnostic and consulting services		107,649		101,862
Practice management and digital imaging systems and services		21,538		20,550
CAG segment revenue		276,941		268,073
Water segment revenue		20,666		19,582
LPD segment revenue		28,039		29,116
Other segment revenue		6,460		5,905
Total revenue	$	332,106	$	322,676

Note 15.     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.

12

The Company has 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 nonrecurring basis and certain financial assets and liabilities that are not measured at fair value in our 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 significant nonfinancial assets or nonfinancial liabilities which required remeasurement during the three months ended March 31, 2013. We did not have any transfers between Level 1 and Level 2 or transfers in or out of Level 3 of the fair value hierarchy during the three months ended March 31, 2013.

Our foreign currency exchange contracts and interest rate swap agreements are measured at fair value on a recurring basis in our accompanying 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. We measure the fair value of our interest rate swaps classified as derivative instruments using an income approach, utilizing a discounted cash flow analysis based on the terms of the contract and the interest rate curve adjusted for counterparty risk.

The amount outstanding under our unsecured revolving credit facility (“Credit Facility”), notes receivable and long-term debt are measured at carrying value in our accompanying 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, notes receivable 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, while our notes receivable, representing a strategic investment in a privately held company with a carrying value of $4.7 million as of March 31, 2013,  are valued using level 3 inputs. The results of these calculations yield fair values that approximate carrying values.

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The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis at March 31, 2013 and at December 31, 2012 by level within the fair value hierarchy (in thousands):

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of March 31, 2013	(Level 1)		(Level 2)		(Level 3)		March 31, 2013
Assets
Money market funds(1)	$	136,587	$	-	$	-	$	136,587
Equity mutual funds(2)		2,438		-		-		2,438
Foreign currency exchange contracts(3)		-		5,341		-		5,341
Liabilities
Foreign currency exchange contracts(3)		-		778		-		778
Deferred compensation(4)		2,438		-		-		2,438
Interest rate swaps(5)		-		2,606		-		2,606

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of December 31, 2012	(Level 1)		(Level 2)		(Level 3)		December 31, 2012
Assets
Money market funds(1)	$	127,576	$	-	$	-	$	127,576
Equity mutual funds(2)		2,320		-		-		2,320
Foreign currency exchange contracts(3)		-		2,128		-		2,128
Liabilities
Foreign currency exchange contracts(3)		-		2,193		-		2,193
Deferred compensation(4)		2,320		-		-		2,320
Interest rate swaps(5)		-		2,682		-		2,682

_____________

(1) Money market funds are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of March 31, 2013 and December 31, 2012 was 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, net. See number (4) below for a discussion of the related deferred compensation liability.

(3) Foreign currency exchange contracts are included within other current assets; other long-term assets, net; 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 combinationis included within 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 number (2) above.

(5) Interest rate swaps are included within accrued 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.

Note 16.    Derivative Instruments and Hedging

Disclosure within this footnote is presented to provide transparency about how and why we use derivative 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.

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We are exposed to certain risks related to our ongoing business operations. The primary risks that we manage by using derivative instruments are foreign currency exchange risk and interest rate risk. 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 foreign currency exchange contracts to minimize the impact of foreign currency fluctuations associated with specific, significant transactions. We enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with our variable-rate debt.

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions. 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 large multinational financial institutions and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management.

We recognize all derivative instruments, including our foreign currency exchange contracts and interest rate swap agreements, on the balance sheet at fair value at the balance sheet date. Derivative 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 hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions.  If a derivative instrument qualifies for hedge accounting, changes in the fair value of the derivative instrument from the effective portion of the hedge are deferred in other comprehensive income (“OCI”), 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 hedge instrument is not effective in achieving offsetting changes in fair value. We de-designate derivative 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 OCI 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 11 for further information regarding the effect of derivative instruments designated as cash flow hedges on the condensed consolidated statement of operations for the three months ended March 31, 2013 and 2012.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit 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 accompanying condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts and interest rate swaps 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 and variable-to-fixed interest rate swaps 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 and interest rates. 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 the three months ended March 31, 2013 or 2012. Gains or losses related to hedge ineffectiveness recognized in earnings during the three months ended March 31, 2013 and 2012were not material.  At March 31, 2013, the estimated amount of net gains that are expected to be reclassified out of accumulated OCI and into earnings within the next 12 months is $1.6 million if exchange and interest rates do not fluctuate from the levels at March 31, 2013.

We enter into foreign currency exchange contracts for amounts that are less than the full value of forecasted intercompany inventory purchases and sales. Our hedging strategy related to intercompany inventory purchases and sales is to employ the full amount of our hedges for the succeeding year at the conclusion of our budgeting process for that year, which is complete by the end of the preceding year. 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.

15

We have entered into forward fixed interest rate swap agreements to manage the economic effect of variable interest obligations on amounts borrowed under the terms of our Credit Facility. Beginning on March 30, 2012, the variable interest rate associated with $40 million of borrowings outstanding under the Credit Facility became effectively fixed at 1.36% plus the range of applicable interest rates (“Credit Spread”) through June 30, 2016. Beginning on March 28, 2013, the variable interest rate associated with an additional $40 million of borrowings outstanding under the Credit Facility became effectively fixed at 1.64% plus the Credit Spread through June 30, 2016. Two of our forward fixed interest rate swap agreements expired on March 31, 2012. Under these agreements, the variable interest rate associated with $80 million of borrowings outstanding under the Credit Facility had been effectively fixed at 2% plus the Credit Spread above the London interbank offered rate.

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 consisted of the following (in thousands):

Currency Sold	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Euro	$	54,660	$	57,720
British pound		26,570		28,520
Japanese yen		19,800		22,450
Canadian dollar		21,200		22,440
Australian dollar		12,500		13,050
	$	134,730	$	144,180

Currency Purchased	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Swiss franc	$	9,750	$	12,820

The notional amount of forward fixed interest rate swap agreements to manage variable interest obligations consisted of the following (in thousands):

	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Interest rate swap commencing March 30, 2012 and expiring June 30, 2016	$	40,000	$	40,000
Interest rate swap commencing March 28, 2013 and expiring June 30, 2016	$	40,000	$	40,000

The fair values of derivative instruments and their respective classification on the condensed consolidated balance sheets consisted of the following (in thousands):

		Asset Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	4,721	$	2,128
Foreign currency exchange contracts	Other long-term assets, net		620		-
Total derivative instruments		$	5,341	$	2,128

		Liability Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	765	$	2,193
Foreign currency exchange contracts	Other long-term liabilities		13		-
Interest rate swaps	Accrued liabilities		2,606		2,682
Total derivative instruments		$	3,384	$	4,875

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The effect of derivative instruments designated as cash flow hedges on the condensed consolidated balance sheets consisted of the following (in thousands):

	Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)
	For the Three Months Ended March 31,
Derivative instruments		2013		2012
Foreign currency exchange contracts, net of tax	$	4,061	$	(1,811)
Interest rate swaps, net of tax		47		110
Total derivative instruments, net of tax	$	4,108	$	(1,701)

Recognized derivative instruments on the condensed consolidated balance sheets that are subject to master netting arrangements consisted of the following (in thousands):

As of March 31, 2013
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	5,341	$	-	$	5,341	$	778	$	4,563
Total derivative assets	$	5,341	$	-	$	5,341	$	778	$	4,563
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	778	$	-	$	778	$	778	$	-
Interest rate swaps		2,606		-		2,606		-		2,606
Total derivative liabilities	$	3,384	$	-	$	3,384	$	778	$	2,606

As of December 31, 2012
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,128	$	-	$	2,128	$	1,918	$	210
Total derivative assets	$	2,128	$	-	$	2,128	$	1,918	$	210
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,193	$	-	$	2,193	$	1,918	$	275
Interest rate swaps		2,682		-		2,682		-		2,682
Total derivative liabilities	$	4,875	$	-	$	4,875	$	1,918	$	2,957

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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, include statements relating to future revenue growth rates, earnings and other measures of financial performance, the effect of economic conditions on our business performance; 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; interest expense; warranty expense; share-based compensation expense; 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,” 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 as more fully described under the heading “Part II, Item 1A. Risk Factors” in this Quarterly Report on Form 10-Q. The risks and uncertainties discussed herein do not reflect the potential impact of any mergers, acquisitions or dispositions. In addition, any forward-looking statements represent our estimates only as of the day this Quarterly Report was first filed with the Securities and Exchange Commission (“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.

§ Business Overview and Trends 

Operating segments. Prior to January 1, 2013, we operated primarily through three business segments: diagnostic and information technology-based products and services for the veterinary market, which we continue to refer to as the Companion Animal Group (“CAG”), water quality products (“Water”) and diagnostic products for livestock and poultry health, which we referred to as Livestock and Poultry Diagnostics. We also operated two smaller operating segments that comprise products for milk quality and safety (“Dairy”) and products for the human point-of-care medical diagnostics market (“OPTI Medical”). Financial information about our Dairy and OPTI Medical operating segments was combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they did not meet the quantitative or qualitative thresholds for reportable segments.

We have combined the management of our Livestock and Poultry Diagnostics, and Dairy lines of business to more effectively realize the market synergies between the product lines and to achieve operational efficiencies. We refer to this newly created segment as Livestock, Poultry and Dairy (“LPD”). Our OPTI Medical operating segment remains combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they do not meet the quantitative or qualitative thresholds for reportable segments. The segment income (loss) from operations discussed within this report for the three months ended March 31, 2012 has been retrospectively revised to reflect this change in the composition of our reportable segments. See Note 14 to the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q for financial information about our segments and the section entitled “Description of Business by Segment” under the heading “Item 1. Business” in our Annual Report on Form 10-K for the year ended December 31, 2012 for additional description pertaining to our product and services. 

CAG develops, designs, manufactures, and distributes products and performs services for veterinarians and the bioresearch 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 instrumentation that are used to detect a wide range of diseases, to monitor health status in livestock and poultry and to detect contaminants in milk. OPTI Medical develops, designs, manufactures, and distributes point-of-care electrolyte and blood gas analyzers and related consumable products for the human medical diagnostics market. Further, OPTI Medical manufactures the dry slide electrolyte consumables that are a subset of the consumables used with our Catalyst Dx^® analyzer and our VetStat^® Electrolyte and Blood Gas Analyzer and associated cassettes, that are the consumable used with this instrument.

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Effects of Certain Factors on Results of Operations

Distributor Purchasing and Inventories. The instrument consumables and rapid assay products in our CAG segment are sold in the U.S. and certain other geographies by third party distributors, who purchase products from us and sell them to veterinary practices, which are the end users. As a result, distributor purchasing dynamics have an impact on our reported sales of these products. Distributor purchasing dynamics may be affected by many factors and in a given period may not be directly related to underlying end-user demand for our products. Consequently, reported results may reflect fluctuations in inventory levels held at distributors and not necessarily reflect changes in underlying end-user demand. Therefore, we believe it is important to track distributor sales to end users and to distinguish between the impact of end-user demand and the impact of distributor purchasing dynamics on reported revenue.  

Where growth rates are affected by changes in end-user demand, we refer to this as the impact of practice-level sales on growth. Where growth rates are affected by distributor purchasing dynamics, we refer to this as the impact of changes in distributors’ inventories on growth. If during the current year, distributors’ inventories grew by less than those inventories grew in the comparable period of the prior year, then changes in distributors’ inventories have an unfavorable impact on our reported sales growth in the current period. Conversely, if during the current year, distributors’ inventories grew by more than those inventories grew in the comparable period of the prior year, then changes in distributors’ inventories have a favorable impact on our reported sales growth in the current period. 

At the end of a quarter, we believe that our U.S. CAG distributors typically hold inventory equivalent to approximately four weeks of the anticipated end-user demand for instrument consumables and rapid assay products.  

Currency Impact. For the three months ended March 31, 2013 and 2012, approximately 26% of our consolidated revenue was derived from products manufactured in the U.S. and sold internationally in local currencies. Strengthening of the rate of exchange for the U.S. dollar 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 operating expenses and foreign currency denominated supply contracts partly offset this exposure.  

The impact on revenue resulting from changes in foreign currency exchange rates is not a measure defined by generally accepted accounting principles in the United States of America (“U.S. GAAP”), otherwise referred to herein as a non-U.S. GAAP measure. 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 previous year period to foreign currency denominated revenues for the current year period. 

During the three months ended March 31, 2013, as compared to the three months ended March 31, 2012, changes in foreign currency exchange rates decreased total company revenue by approximately $1.9 million, due primarily to the strengthening of the U.S. dollar against the Japanese yen.  

Effects of Economic Conditions. Demand for many of our products and services has been negatively affected by economic conditions since mid-2008. In our CAG segment, we believe that low economic growth and relatively high unemployment have led to negative or cautious consumer sentiment, which has affected the number of patient visits to veterinary clinics. With regard to the U.S., based on data provided by a subset of our customers that use our practice management systems, we observed patient visits were flat to slightly down beginning in 2009. Beginning in the fourth quarter of 2011, we observed a slight improvement in the growth of patient visits, followed by further improvement during 2012 over the previous year periods.This improvement slowed in the first quarter of 2013. We believe that this data, though limited, provides a fair and meaningful representation of the trend in patient visit activity in the U.S. Economic conditions in certain European countries remain challenging, which we believe has a negative impact on our CAG segment in particular.

We believe that the overall trend in patient visits since the beginning of the economic downturn has had a slightly negative impact on the growth rate of sales of rapid assay tests, instrument consumables and reference laboratory diagnostic and consulting services. In addition, we believe the rate of growth of sales of our instruments and digital radiography systems, which are larger capital purchases for veterinarians, has also been affected by continued caution among veterinarians regarding economic conditions. Weaker economic conditions since mid-2008 have also caused our customers to remain sensitive to the pricing of our products and services resulting in lower revenue growth due to limited price increases for certain products.  

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We also believe that current economic conditions have affected purchasing decisions of our Water and LPD business customers. Lower water testing volumes have resulted from a decline in discretionary testing and a decline in mandated testing as a result of lower home and commercial construction. Fiscal difficulties in certain European countries have also reduced government funding for some water and livestock testing programs.  

We believe that the diversity of our products and services and the geographic diversity of our markets have partially mitigated the effects of the economic environment and negative consumer sentiment on our revenue growth rates. Looking forward, we are cautiously optimistic that the improvements we began to see in the U.S. commencing in the fourth quarter of 2011 and continuing in 2012 and 2013 are reflective of a gradual improvement in the macroeconomic environment that over time will further reduce these effects.

§ Critical Accounting Policies and Estimates 

The discussion and analysis of our financial condition and results of operations is based upon our 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. On an ongoing basis, we evaluate our estimates. 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 significant accounting policies used in preparation of these condensed consolidated financial statements for the three months ended March 31, 2013 are consistent with those discussed in Note 2 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012. The critical accounting policies and the significant judgments and estimates used in the preparation of our condensed consolidated financial statements for the three months ended March 31, 2013 are consistent with those discussed in our Annual Report on Form 10-K for the year ended December 31, 2012 in the section under the heading “Part 2, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates.”  

§ Results of Operations 

The following revenue analysis and discussion reports on organic revenue growth. Organic revenue growth should be considered in addition to, and not as a replacement for or as a superior measure to, revenues 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 our peers. We exclude 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 exclude the effect of acquisitions because the nature, size and number of acquisitions can vary dramatically from period to period and therefore can also obscure underlying business trends. 

Organic revenue growth and the percentage changes in revenue from currency and acquisitions are non-U.S. GAAP measures. See the subsection above titled “Effects of Certain Factors on Results of Operations” for a description of the calculation of the percentage change in revenue resulting from changes in foreign currency exchange rates. The percentage change in revenue resulting from acquisitions represents incremental revenues attributable to acquisitions that have occurred since the beginning of the prior year period.

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Three Months Ended March 31, 2013 Compared to Three Months Ended March 31, 2012 

Revenue 

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

Net Revenue  (dollars in thousands)	For the Three Months Ended March 31, 2013		For the Three Months Ended March 31, 2012		Dollar Change			Percentage Change		Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth
CAG	$	276,941	$	268,073	$	8,868		3.3	%	(0.6	%)	0.3	%	3.6	%
Water		20,666		19,582		1,084		5.5	%	(0.5	%)	-		6.0	%
LPD		28,039		29,116		(1,077	)	(3.7	%)	(0.4	%)	-		(3.3	%)
Other		6,460		5,905		555		9.4	%	(0.2	%)	-		9.6	%
Total Company	$	332,106	$	322,676	$	9,430		2.9	%	(0.6	%)	0.2	%	3.3	%

Companion Animal Group. The following table presents revenue by product and service category for CAG, with the exception of the VetLab^® instruments and consumables product and service category, which is presented by revenue for each of its three VetLab^® components: 

Net Revenue  (dollars in thousands)	For the Three Months Ended March 31, 2013		For the Three Months Ended March 31, 2012		Dollar Change			Percentage Change			Percentage Change from Currency		Percentage Change from Acquisitions		Organic Revenue Growth
VetLab® instruments	$	15,812	$	20,550	$	(4,738	)		(23.1	%)	(0.9	%)	-		(22.2	%)
VetLab® consumables		75,528		69,832		5,696			8.2	%	(0.5	%)	-		8.7	%
VetLab® service and accessories		12,331		11,615		716			6.2	%	(2.7	%)	-		8.9	%
Rapid assay products		44,083		43,664		419			1.0	%	(0.7	%)	-		1.7	%
Reference laboratory diagnostic and consulting services		107,649		101,862		5,787			5.7	%	(0.5	%)	0.3	%	5.9	%
Practice management  and digital imaging systems and services		21,538		20,550		988			4.8	%	(0.1	%)	3.0	%	1.9	%
Net CAG revenue	$	276,941	$	268,073	$	8,868			3.3	%	(0.6	%)	0.3	%	3.6	%

  The decrease in VetLab^® instruments revenue was due primarily to the impact of customer programs, including a reagent rental program that was launched in the fourth quarter of 2012, where instrument revenue is recognized over the term of the rental agreement. There was also a decrease in both hematology and chemistry placements. VetLab^®  service and accessories revenue growth was primarily a result of the increase in our active installed base of instruments. 

VetLab^® consumables revenue growth was due to both higher unit volumes and higher realized prices. The increase in unit volumes resulted primarily from growth of our install base for our Catalyst Dx^® and ProCyte Dx^®  instruments as a result of customer acquisitions, as well as an increase in testing from existing customers who upgraded to these instruments, partially offset by lower sales of consumables used with our VetTest chemistry instrument. Higher realized prices include the impact of higher practice-level prices, as well as higher prices charged as a result of changes in certain distributor arrangements. The impact of changes in distributors’ inventory levels reduced reported consumables revenue growth by 2%. 

 The increase in rapid assay revenue was due primarily to higher average unit sales prices, partly offset by lower canine and feline practice level sales volumes and the unfavorable impact of changes in distributors’ inventory levels, which reduced revenue growth by less than 1%. The decline in practice level sales volumes was due primarily to the impact of changes to marketing programs.

The increase in reference laboratory diagnostic and consulting services revenue resulted primarily from the impact of price increases and, to a lesser extent, higher testing volumes. Higher testing volumes were driven by the acquisition of new customers.

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 The increase in practice management and digital imaging systems and services revenue resulted primarily from an increase in support revenue resulting from an increase in our active installed base of digital radiography and practice management systems and revenue from Pet Health Network^® Pro, which launched commercially in the first quarter of 2013. These favorable impacts were partly offset by a decrease in placements of our digital radiography systems.

Water. The increase in Water revenue resulted primarily from higher Colilert^® product sales volumes in Europe and Latin America.

Livestock, Poultry and Dairy. The decrease in LPD revenue resulted primarily from lower sales volumes of our Dairy SNAP^® tests used for the detection of the contaminant Aflatoxin M1 and antibiotic residues in milk, partly offset by higher sales volumes of certain bovine tests.  Dairy SNAP^®  sales volumes were favorably impacted by testing as  a result of an Aflatoxin M1 outbreak in China in early 2012, from which testing volumes subsided over the remainder of 2012.

Other. The increase in Other revenue was attributable primarily to higher sales volumes of consumables used with our OPTI Medical instruments and higher milestone and royalty revenue from our pharmaceutical out-licensing arrangements. These favorable factors were partly offset by lower sales volumes associated with our pharmaceutical product line.

Gross Profit

Total Company. The following table presents gross profit and gross profit percentages by operating segment:

Gross Profit (dollars in thousands)	For the Three Months Ended March 31, 2013		Percent of Revenue		For the Three Months Ended March 31, 2012		Percent of Revenue		Dollar Change			Percentage Change
CAG	$	150,239	54.2	%	$	139,401	52.0	%	$	10,838		7.8	%
Water		13,494	65.3	%		12,967	66.2	%		527		4.1	%
LPD		15,876	56.6	%		17,923	61.6	%		(2,047	)	(11.4	%)
Other		3,188	49.4	%		2,576	43.6	%		612		23.8	%
Unallocated Amounts		1,177	N/A			1,907	N/A			(730	)	(38.3	%)
Total Company	$	183,974	55.4	%	$	174,774	54.2	%	$	9,200		5.3	%

Companion Animal Group. Gross profit for CAG increased due to an increase in the gross profit percentage to 54% from 52% and higher sales.  The increase in gross profit percentage was due primarily to higher average unit sales prices resulting from price increases for our reference laboratory diagnostic services, VetLab^® consumables and rapid assay test products, higher relative sales of VetLab^® consumables that yield higher margins and efficiences realized throughout our reference laboratories operations.

Water. Gross profit for Water increased due to higher sales, partly offset by a decrease in the gross profit percentage to 65% from 66%. The decrease in the gross profit percentage was due primarily to lower average unit sales prices resulting from higher relative sales of our Colilert^®  and Quanti-Tray^® products in geographies where products are sold at lower average unit sales prices. 

Livestock, Poultry and Dairy. Gross profit for LPD decreased due to a decrease in the gross profit percentage to 57% from 62% and lower sales. The decrease in the gross profit percentage was due primarily to the unfavorable impact of currency, higher overall manufacturing costs driven by lower Dairy SNAP^®production volumes and lower average unit sales prices for certain bovine tests. These unfavorable factors were partly offset by lower relative sales of low margin products and reduced freight and distribution costs, both of which were the result of lower Dairy SNAP^®  sales volumes in China. The unfavorable impact of currency was due primarily to hedging losses during the three months ended March 31, 2013 compared to hedging gains during the same period of the prior year. 

Other. Gross profit for Other increased due to an  increase in the gross profit percentage to 49% from 44% and higher sales. The increase in the gross profit percentage was due to higher relative milestone and royalty revenue from our remaining pharmaceutical out-licensing arrangements for which there is no associated cost of revenue. 

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Unallocated Amounts. Gross profit for Unallocated Amounts decreased due primarily to an increase in certain manufacturing costs and higher personnel-related costs.  The manufacturing costs reported in our operating segments include our standard cost for products sold and any variances from standard cost for products purchased or manufactured within the period. We capitalize these variances for inventory on hand at the end of the period to record inventory in accordance with U.S. GAAP. We then record these variances as cost of product revenue as that inventory is sold. The impact to cost of product revenue resulting from this variance capitalization and subsequent recognition is reported within the caption “Unallocated Amounts.”The net impact to gross profit as a result of manufacturing costs was unfavorable during the three months ended March 31, 2013 as compared to the same period of the prior year, which benefited from amortization of significant favorable variances capitalized in 2011. With respect to personnel-related costs, we estimate certain personnel-related costs and allocate the estimated expenses to the operating segments. This allocation differs from actual expense and consequently yields a difference that is reported under the caption “Unallocated Amounts.” The increase in personnel-related costs is due primarily to higher self-insured health care costs during the three months ended March 31, 2013 as compared to the same period of the prior year.

Operating Expenses and Operating Income

Total Company. The following tables present operating expenses and operating income by operating segment:

Operating Expenses (dollars in thousands)	For the Three Months Ended March 31, 2013		Percent of Revenue		For the Three Months Ended March 31, 2012		Percent of Revenue		Dollar Change			Percentage Change
CAG	$	98,930	35.7	%	$	92,483	34.5	%	$	6,447		7.0	%
Water		5,139	24.9	%		4,672	23.9	%		467		10.0	%
LPD		11,040	39.4	%		11,906	40.9	%		(866	)	(7.3	%)
Other		2,753	42.6	%		2,789	47.2	%		(36	)	(1.3	%)
Unallocated Amounts		4,924	N/A			2,517	N/A			2,407		95.6	%
Total Company	$	122,786	37.0	%	$	114,367	35.4	%	$	8,419		7.4	%

Operating Income (dollars in thousands)	For the Three Months Ended March 31, 2013			Percent of Revenue		For the Three Months Ended March 31, 2012			Percent of Revenue		Dollar Change			Percentage Change
CAG	$	51,309		18.5	%	$	46,918		17.5	%	$	4,391		9.4	%
Water		8,355		40.4	%		8,295		42.4	%		60		0.7	%
LPD		4,836		17.2	%		6,017		20.7	%		(1,181	)	(19.6	%)
Other		435		6.7	%		(213	)	(3.6	%)		648		304.2	%
Unallocated Amounts		(3,747	)	N/A			(610	)	N/A			(3,137	)	(514.3	%)
Total Company	$	61,188		18.4	%	$	60,407		18.7	%	$	781		1.3	%

Companion Animal Group. The following table presents CAG operating expenses by functional area:

Operating Expenses (dollars in thousands)	For the Three Months Ended March 31, 2013		Percent of Revenue		For the Three Months Ended March 31, 2012		Percent of Revenue		Dollar Change		Percentage Change
Sales and marketing	$	50,995	18.4	%	$	49,462	18.5	%	$	1,533	3.1	%
General and administrative		32,223	11.6	%		28,924	10.8	%		3,299	11.4	%
Research and development		15,712	5.7	%		14,097	5.3	%		1,615	11.5	%
Total operating expenses	$	98,930	35.7	%	$	92,483	34.5	%	$	6,447	7.0	%

The increase in sales and marketing expense resulted primarily from higher personnel-related costs, partly offset by reduced spending on internal sales meetings and the favorable impact from changes in foreign currency exchange rates. The increase in general and administrative expense resulted primarily from higher external consulting costs and increased personnel-related costs. The increase in research and development expense resulted primarily from increased personnel-related costs and higher external consulting and development costs. 

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Water. The following table presents Water operating expenses by functional area:

Operating Expenses (dollars in thousands)	For the Three Months Ended March 31, 2013		Percent of Revenue		For the Three Months Ended March 31, 2012		Percent of Revenue		Dollar Change		Percentage Change
Sales and marketing	$	2,417	11.7	%	$	2,434	12.4	%	$	(17)	(0.7	%)
General and administrative		2,081	10.1	%		1,601	8.2	%		480	30.0	%
Research and development		641	3.1	%		637	3.3	%		4	0.6	%
Total operating expenses	$	5,139	24.9	%	$	4,672	23.9	%	$	467	10.0	%

Sales and marketing expense and research and development expense for the three months ended March 31, 2013 were generally consistent with the same period of the prior year. The increase in general and administrative expense resulted primarily from higher personnel-related costs.

Livestock, Poultry and Dairy. The following table presents LPD operating expenses by functional area:

Operating Expenses (dollars in thousands)	For the Three Months Ended March 31, 2013		Percent of Revenue		For the Three Months Ended March 31, 2012		Percent of Revenue		Dollar Change			Percentage Change
Sales and marketing	$	4,666	16.6	%	$	4,962	17.0	%	$	(296	)	(6.0	%)
General and administrative		3,433	12.2	%		3,851	13.2	%		(418	)	(10.9	%)
Research and development		2,941	10.5	%		3,093	10.6	%		(152	)	(4.9	%)
Total operating expenses	$	11,040	39.4	%	$	11,906	40.9	%	$	(866	)	(7.3	%)

The decrease in sales and marketing expense resulted primarily from lower personnel-related costs. The decrease in general and administrative expense resulted primarily from lower personnel-related costs and a decrease in intangible asset amortization. The decrease in research and development expense was due primarily to lower personnel-related costs.

Other. Operating expenses for Other, which totaled $2.8 million for the three months ended March 31, 2013, were generally consistent with the same period of the prior year.

Unallocated Amounts.Operating expenses that are not allocated to our operating segments increased $2.4 million to $4.9 million for the three months ended March 31, 2013 due primarily to losses incurred resulting from the bankruptcy of a freight payment and audit service provider (“freight service company”), partly offset by proceeds received during the three months ended March 31, 2013 as a result of the demutualization of an insurance provider and lower legal and other professional fees incurred in connection with the U.S. Federal Trade Commission (“FTC”) investigation as this investigation concluded in February 2013. On March 25, 2013, the freight service company provided notice to the Company that all freight payment services would cease immediately and that certain amounts paid by us to the freight service company were not subsequently remitted to our freight carriers due to an employee fraud and a breakdown in internal controls, both at the freight service company, concluding in significant losses and the resulting bankruptcy. In response, we recorded a $4.1 million loss related to these unremitted amounts in general and administrative expense during the three months ended March 31, 2013. We plan to pursue the freight service company in an attempt to recover this loss but we cannot be certain of any recovery at this time. 

Interest Income and Interest Expense

Interest income was $0.4 million for both the three months ended March 31, 2013 and 2012.   

Interest expense decreased $0.4 million to $0.8 million for the three months ended March 31, 2013 due primarily to lower effective interest rates on our unsecured revolving credit facility (“Credit Facility”).

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Provision for Income Taxes 

Our effective income tax rate was 26.2% and 31.7% for the three months ended March 31, 2013 and 2012, respectively. During the quarter ended March 31, 2013, federal legislation was enacted within the U.S. that retroactively allowed a research and development (R&D) tax credit for all of 2012 and extended the R&D credit through the twelve months ending December 31, 2013.  Because this legislation was enacted in 2013, the full benefit of the credit related to the prior year’s activities was recognized during the three months ended March 31, 2013. In the absence of the 2012 R&D credit, our effective tax rate for the three months ended March 31, 2013 would have been 30.6%, or 4.4% higher. The remaining decrease in our effective income tax rate was due to the impact of the U.S. R&D tax benefit related to research activities occurring during the three months ended March 31, 2013. 

§ Recent Accounting Pronouncements

A discussion of recent accounting pronouncements is included in Note 2 to the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q.

§ Liquidity and Capital Resources  

Liquidity 

We fund the capital needs of our business through cash on hand, funds generated from operations, and amounts available under our Credit Facility. At March 31, 2013 and December 31, 2012, we had $228.4 million and $224.0 million, respectively, of cash and cash equivalents, and working capital of $154.8 million and $163.2 million, respectively. Additionally, at March 31, 2013, we had remaining borrowing availability of $39.0 million under our $300 million Credit Facility. We believe that, if necessary, we could obtain additional borrowings at prevailing market interest rates to fund our growth objectives. We further believe that current cash and cash equivalents, funds generated from operations, and available borrowings will be sufficient to fund our operations, capital purchase requirements, and strategic growth needs for the next twelve months, and that these resources will be sufficient in the long term to fund our business as currently conducted.  

We consider the majority of the operating earnings of certain non-U.S. subsidiaries to be indefinitely invested outside the U.S. Changes to this position could have adverse tax consequences. We manage our worldwide cash requirements considering available funds among all of our subsidiaries. Our foreign cash balances are generally available without restrictions to fund ordinary business operations outside the U.S. Of our total cash and cash equivalents at March 31, 2013, approximately $222.7 million was held by our foreign subsidiaries and was subject to material repatriation tax effects. The amount of cash and cash equivalents held by foreign subsidiaries subject to other restrictions on the free flow of funds (primarily securing various obligations) was approximately $1.3 million. As of March 31, 2013, 36% of the cash and cash equivalents held by our foreign subsidiaries was invested in money market funds restricted to U.S. government and agency securities, 39% was held as bank deposits, and 25% was invested in money market funds having investments in highly liquid investment-grade fixed-income securities. As of March 31, 2013, approximately 64% of the cash and cash equivalents held by our foreign subsidiaries was held in U.S. dollars. 

Should we require more capital in the U.S. than is generated by our operations domestically, for example to fund significant discretionary activities, we could elect to repatriate future earnings from foreign jurisdictions or raise capital in the U.S. through debt or equity issuances. These alternatives could result in higher effective tax rates, increased interest expense, or other dilution of our earnings. We have borrowed funds domestically and continue to have the ability to borrow funds domestically at reasonable interest rates.  

The following table presents additional key information concerning working capital: 

	For the Three Months Ended
	March 31, 2013		December 31, 2012		September 30, 2012		June 30, 2012		March 31, 2012
Days sales outstanding(1)		40.8		39.9		41.7		41.9		42.7
Inventory turns(2)		1.7		1.8		1.7		1.8		1.8
(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 represents inventory-related cost of product revenue for the 12 months preceding each quarter-end divided by the inventory balance at the end of the quarter.

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Sources and Uses of Cash 

The following table presents cash provided (used): 

	For the Three Months Ended March 31,
(dollars in thousands)	2013			2012			Dollar Change
Net cash provided by operating activities	$	20,684		$	15,184		$	5,500
Net cash used by investing activities		(16,920	)		(7,344	)		(9,576	)
Net cash provided(used by) financing activities		2,252			(6,564	)		8,816
Net effect of changes in exchange rates on cash		(1,638	)		320			(1,958	)
Net increase in cash and cash equivalents	$	4,378		$	1,596		$	2,782

Operating Activities. Cash provided by operating activities was $20.7 million for the three months ended March 31, 2013 as compared to $15.2 million for the same period of the prior year. The total of net income and net non-cash charges, excluding the impact of reclassifying the tax benefit from share based compensation arrangements to a financing activity, was $64.3 million for the three months ended March 31, 2013 compared to $58.4 million for the same period in 2012, resulting in incremental operating cash flows of $5.9 million driven primarily by the increase in net income. The total of changes in operating assets and liabilities and the tax benefit from share-based compensation arrangements decreased cash by $43.6 million and $43.2 million for the three months ended March 31, 2013 and 2012, respectively, resulting in an incremental decrease in cash of $0.4 million. 

The following table presents cash flows from changes in operating assets and liabilities and the tax benefit from share-based compensation arrangements: 

	For the Three Months Ended March 31,
(dollars in thousands)	2013			2012			Dollar Change
Accounts receivable	$	(23,722	)	$	(17,818	)	$	(5,904	)
Inventories		(8,472	)		(8,687	)		215
Other assets		6,301			(3,165	)		9,466
Accounts payable		3,654			3,990			(336	)
Accrued liabilities		(16,919	)		(14,698	)		(2,221	)
Deferred revenue		869			1,699			(830	)
Tax benefit from share-based compensation arrangements		(5,310	)		(4,518	)		(792	)
Total change in cash due to changes in operating assets and liabilities and the tax benefit from share-based compensation arrangements	$	(43,599	)	$	(43,197	)	$	(402	)

The incremental cash provided by other assets was due primarily to a $6.3 million royalty prepayment to a licensor during the three months ended March 31, 2012. The increase in accounts receivable during the three months ended March 31, 2013 was greater than the increase during the same period of the prior year due primarily to higher revenues in the last month of the quarter ended March 31, 2013 as compared to the same period of the prior year.

We historically have 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 and for the annual period driven primarily by the payment of annual bonuses in connection with employee incentive programs in the first quarter following the year for which the bonuses were earned and the seasonality of vector-borne disease testing, which has historically resulted in significant increases in accounts receivable balances during the first quarter of the year.

Investing Activities. Cash used by investing activities was $16.9 million for the three months ended March 31, 2013 as compared to $7.3 million for the same period of the prior year. The increase in cash used by investing activities was due primarily to incremental investments to expand our headquarters facility in Westbrook, Maine and, to a lesser extent, our investments in information technologyduring the three months ended March 31, 2013 as compared to the same period of the prior year. 

Our total capital expenditure plan for 2013 is estimated to be approximately $80 million, which includes the expansion of our headquarters facility in Westbrook, Maine, investments in software for internal use, information technology infrastructure, capital investments in manufacturing equipment and investments in our reference laboratory equipment and facilities.

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Financing Activities. Cash provided by financing activities was $2.3 million for the three months ended March 31, 2013 as compared to cash used of $6.6 million for the same period in 2012. The incremental cash provided by financing activities was due primarily to an increase in net borrowings under the Credit Facility and an increase in cash received from the exercise of stock options and share purchases under employee stock purchase plans and related tax benefits, partly offset by an increase in cash used to repurchase common stock.

Cash used to repurchase shares of our common stock increased by $36.1 million during the three months ended March 31, 2013 as compared to the same period of the prior year. From the inception of our share repurchase program in August 1999 to March 31, 2013, we have repurchased 45.8 million shares. During the three months ended March 31, 2013, we purchased 0.7 million shares for an aggregate cost of $63.8 million compared to purchases of 0.3 million shares for an aggregate cost of $27.6 million during the three months ended March 31, 2012. We believe that the repurchase of our common stock is a favorable investment and we also repurchase 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 9 to the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q for additional information about our share repurchases.  

Cash proceeds from the exercise of stock options and share purchases under employee stock purchase plans and the related tax benefits increased by $8.0 million during the three months ended March 31, 2013 as compared to the same period of the prior year due primarily to an increase in the average exercise price and number of stock options exercised.

Net borrowing and repayment activity under our Credit Facility resulted in incremental cash provided of $37.0 million during the three months ended March 31, 2013 as compared to the same period of the prior year. At March 31, 2013, we had $260.0 million outstanding under the Credit Facility. The general availability of funds under the Credit Facility was further reduced by $1.0 million for a letter of credit issued related to our worker’s compensation policy covering claims for the years ending 2009 through 2013. The obligations under the Credit Facility may be accelerated upon the occurrence of an event of default under the Credit Facility, which includes customary events of default including, without limitation, payment defaults, defaults in the performance of affirmative and negative 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, the failure to pay specified indebtedness, and a change of control default. The Credit Facility 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 and certain restrictive agreements. The financial covenant is a consolidated leverage ratio test that requires our ratio of debt to earnings before interest, taxes, depreciation and amortization not to exceed 3-to-1. At March 31, 2013, we were in compliance with the covenants of the Credit Facility.

Other Commitments, Contingencies and Guarantees 

Significant commitments, contingencies and guarantees at March 31, 2013 are consistent with those discussedin the section under the heading “Part 2, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources,” and in Note 14 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012. 

Item 3.  Quantitative and Qualitative Disclosures About Market Risk 

For quantitative and qualitative disclosures about market risk affecting IDEXX, see the section under the heading “Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk” of our Annual Report on Form 10-K for the year ended December 31, 2012. As of the date of this report, there have been no material changes to the market risks described in our Annual Report on Form 10-K for the year ended December 31, 2012. 

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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 Securities and Exchange Commission (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 is 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 March 31, 2013, our chief executive officer and 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 March 31, 2013 that materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting. 

PART II — OTHER INFORMATION 

Item 1. Legal Proceedings

In January 2010, we received a letter from the U.S. Federal Trade Commission (“FTC”), stating that it was conducting an investigation to determine whether IDEXX or others had engaged in unfair methods of competition in violation of Section 5 of the Federal Trade Commission Act (“FTC Act”), through pricing or marketing policies for companion animal veterinary products and services, including but not limited to exclusive dealing or tying arrangements with distributors or end-users of those products or services (the “Investigation”).

On December 5, 2012, we entered into an Agreement Containing Consent Order to Cease and Desist (“Consent Agreement”) with the FTC staff to resolve the Investigation. The Consent Agreement, which is ten years in duration, specifies that IDEXX may have exclusive distribution agreements with two of the following three distributors: MWI Veterinary Supply, Inc. (“MWI”), Butler Schein Animal Health, and Webster Veterinary.The FTC Commissioners granted final approval of the Consent Agreement on February 11, 2013 resulting in the final resolution of the Investigation.

We continue to believe that our marketing and sales practices for companion animal veterinary products and services do not violate applicable antitrust laws. We have chosen to enter into the Consent Agreement because we believe this course will help us avoid long and costly litigation and that our business will not be materially adversely affected. 

From time to time, we are subject to other legal proceedings and claims, which arise in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on our results of operations, financial condition or cash flows.

Item 1A. Risk Factors 

Our future operating results involve a number of risks and uncertainties. Actual events or results may differ materially from those discussed in this report. Factors that could cause or contribute to such differences include, but are not limited to, the factors discussed below, as well as those discussed elsewhere in this report.  

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The following discussion includes five revised risk factors (“Our Failure to Successfully Execute Certain Strategies Could Have a Negative Impact on Our Growth and Profitability,” “Our Dependence on a Limited Number of Suppliers Could Limit Our Ability to Sell Certain Products or Reduce Our Profitability,”  “The Impact of One of Our Distributors Becoming Non-exclusive on Our Results of Operations is Uncertain,” “Increase in Corporate Hospital Ownership and Prevalence of Buying Consortiums Could Negatively Affect Our Business” and “Our Operations are Vulnerable to Interruption as a Result of Natural and Man-Made Disasters or System Failures”) that reflect developments subsequent to the discussion of those risk factors included in our Annual Report on Form 10-K for the year ended December 31, 2012.

Our Failure to Successfully Execute Certain Strategies Could Have a Negative Impact on Our Growth and Profitability 

The companion animal healthcare industry is highly competitive and we anticipate increasing levels of competition from both existing competitors and new market entrants. Our ability to maintain or enhance our growth rates and our profitability depends on our successful execution of many elements of our strategy, which include: 

· Developing, manufacturing and marketing innovative new or improved and cost competitive in-clinic laboratory analyzers that drive sales of IDEXX VetLab^® instruments, grow our installed base of instruments, and increase demand for related consumable products, services and accessories;

· Developing and introducing new proprietary diagnostic tests and services that provide valuable medical information to our customers and effectively differentiate our products and services from those of our competitors;

· Increasing the value to our customers of our companion animal products and services by enhancing the integration of these products and the management of diagnostic information derived from our products;

· Providing our veterinary customers with the medical and business tools, information and resources that enable them to grow their practices through increased pet visits and enhanced practice of real-time care;

· Achieving cost improvements in our worldwide network of laboratories by implementing global best practices including lean processing techniques, incorporating technological enhancements including laboratory automation and a global laboratory information management system, employing purchasing strategies to maximize leverage of our global scale, increasing the leverage of existing infrastructure and consolidating testing in high volume laboratory hubs;

· Achieving cost improvements in the manufacture and service of our in-clinic laboratory analyzers by employing the benefits of economies of scale in both negotiating supply contracts and leveraging manufacturing overhead, and by improving reliability of our instruments;

· Achieving productivity improvements in our companion animal diagnostic sales organization in North America by transitioning our specialty sales force that represent either in-house or reference laboratory diagnostics to account representatives who represent the full line of IDEXX diagnostics. We believe we have mitigated our risk of sales force turnover and productivity losses during this transition by adding headcount to our sales force while reducing the size of the geographic territories, providing extensive individualized training and empowering our sales representatives with intuitive sales technologies. We further believe this transition better aligns our sales force with the needs of the veterinary practices resulting in deeper relationships with our customers, improved sales force retention and alignment with our overall diagnostic strategy;  

· Expanding our served market and growing our market share by strengthening our sales and marketing activities both within the U.S. and in geographies outside of the U.S.;  

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· Identifying, completing and integrating acquisitions that enhance our existing businesses or create new business or geographic areas for us; and

· Developing and implementing new technology and licensing strategies.

If we are unsuccessful in implementing and executing on some or all of these strategies, our rate of growth or profitability may be negatively impacted. 

Our Dependence on a Limited Number of Suppliers Could Limit Our Ability to Sell Certain Products or Reduce Our Profitability  

We currently purchase many products and materials from sole or single sources. Some of the products that we purchase from these sources are proprietary and, therefore, cannot be readily or easily replaced by alternative sources. These products include our Catalyst Dx^® consumables; ProCyte Dx^® hematology, IDEXX VetAutoread^™ hematology, VetLyte^®  electrolyte, IDEXX VetLab^® UA^™ urinalysis, VetTest^® chemistry, and Coag Dx^™ blood coagulation analyzers and related consumables and accessories; image capture plates used in our digital radiography systems; and certain components and raw materials used in our SNAP^®rapid assay devices, livestock and poultry diagnostic tests, dairy testing products and LaserCyte^®and LaserCyte^® Dx hematology analyzers. To mitigate risks associated with sole and single source suppliers, we seek when possible to enter into long-term contracts that ensure an uninterrupted supply of products at predictable prices. However, some suppliers decline to enter into long-term contracts and we are required to purchase products on a purchase order basis. There can be no assurance that suppliers with which we do not have contracts will continue to supply our requirements for products, that suppliers with which we do have contracts will always fulfill their obligations under these contracts, or that any of our suppliers will not experience disruptions in their ability to supply our requirements for products. In cases where we purchase sole and single source products or components under purchase orders, we are more susceptible to unanticipated cost increases or changes in other terms of supply. In addition, under some contracts with suppliers we have minimum purchase obligations and our failure to satisfy those obligations may result in loss of some or all of our rights under these contracts or require us to compensate the supplier. If we are unable to obtain adequate quantities of products in the future from sole and single source suppliers, we may be unable to supply the market, which could have a material adverse effect on our results of operations.

Our Biologic Products Are Complex and Difficult to Manufacture, Which Could Negatively Affect Our Ability to Supply the Market

Many of our rapid assay, livestock and poultry diagnostic, water and dairy products are biologic products, which are products that include materials from living organisms, such as antibodies, cells and sera. Manufacturing biologic products is highly complex due to the inherent variability of biological input materials and to the difficulty of controlling the interactions of these materials with other components of the products, with samples and with the environment. There can be no assurance that we will be able to maintain adequate sources of biological materials or that we will be able to consistently manufacture biologic products that satisfy applicable product release criteria. Further, products that meet release criteria at the time of manufacture may fall out of specification while in customer inventory, which could necessitate field actions that would require us to incur expenses associated with recalling products and providing customers with new products, and could damage customer relations. Our inability to produce or obtain necessary biological materials or to successfully manufacture biologic products that incorporate such materials could result in our inability to supply the market with these products, which could have a material adverse effect on our results of operations.

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A Weak Economy Could Result in Reduced Demand for Our Products and Services or Increased Customer Credit Risk 

A substantial percentage of our sales are made worldwide to the companion animal veterinary market. Demand for our companion animal diagnostic products and services is driven in part by the number of patient visits with their respective owners to veterinary hospitals and the practices of veterinarians with respect to the recommendations for diagnostic testing, as well as the pet owner compliance with these recommendations. Economic weakness in our significant markets in recent years has caused and could continue to cause pet owners to skip or defer visits to veterinary hospitals or could affect their willingness to approve certain diagnostic tests, comply with a treatment plan or, even more fundamentally, continue to own a pet. In addition, concerns about the financial resources of pet owners could cause veterinarians to be less likely to recommend certain diagnostic tests and concerns about the economy may cause veterinarians to defer purchasing capital items such as our instruments and systems. A decline in patient visits to the hospital, in the willingness of pet owners to treat certain health conditions or approve certain tests, in pet ownership in general, or in the inclination of veterinarians to recommend certain tests or make capital purchases could result in a decrease in sales of diagnostic products and services, which could have a material adverse effect on our results of operations.  

Demand for our water products is driven in part by the availability of funds at the government laboratories, water utilities and private certified laboratories that utilize our products. Availability of funds also affects demand by the government laboratories and cattle, swine and poultry producers that utilize our livestock and poultry diagnostic products, and by users of our human point-of-care diagnostic instruments. Economic weakness in our markets has caused and could continue to cause our customers to reduce their investment in such testing, which could have a material adverse effect on our results of operations. 

In all of our markets, a weak economy may also cause deterioration in the financial condition of our distributors and customers, which could inhibit their ability to pay us amounts owed for products delivered or services provided in a timely fashion or at all. 

Strengthening of the Rate of Exchange for the U.S. Dollar Has a Negative Effect on Our Business

Any strengthening of the rate of exchange for the U.S. dollar against non-U.S. currencies, and in particular the Euro, British pound, Canadian dollar, Japanese yen and Australian dollar, adversely affects our results, as it reduces the dollar value of sales that are made in those currencies and reduces the profits on products manufactured or sourced in U.S. dollars and exported to international markets.  For the three months ended March 31, 2013 and 2012, approximately 26%of our consolidated revenue was derived from products manufactured in the U.S. and sold internationally in local currencies. To mitigate such foreign currency exposure, we utilize non-speculative forward currency exchange contracts. A strengthening U.S. dollar could also negatively impact the ability of customers outside the U.S. to pay for purchases denominated in U.S. dollars. 

Various Government Regulations Could Limit or Delay Our Ability to Market and Sell Our Products 

In the U.S., the manufacture and sale of our products are regulated by agencies such as the United States Department of Agriculture (“USDA”), the U.S. Food and Drug Administration (“FDA”) and the U.S. Environmental Protection Agency (“EPA”). Our infectious disease diagnostic tests for animal health applications, including most rapid assay canine and feline SNAP^® tests and livestock and poultry diagnostic tests, must be approved by the USDA prior to sale in the U.S. Our dairy testing products require approval by the FDA prior to sale in the U.S. Our water testing products must be approved by the EPA before they can be used by customers in the U.S. as a part of a water quality monitoring program required by the EPA. The manufacture and sale of our OPTI^® line of human point-of-care electrolytes and blood gas analyzers are regulated by the FDA and these products require approval by the FDA before they may be sold commercially in the U.S. The manufacture and sale of our products are subject to similar and sometimes more stringent laws in many foreign countries. Any failure to comply with legal and regulatory requirements relating to the manufacture and sale of our products in the U.S. or in other countries could result in fines and sanctions against us or suspensions or discontinuations of our ability to manufacture or sell our products, which could have a material adverse effect on our results of operations. In addition, delays in obtaining regulatory approvals for new products or product upgrades could have a negative impact on our growth and profitability.

The Impact of One of Our Distributors Becoming Non-exclusive on Our Results of Operations is Uncertain 

On February 11, 2013, the Commissioners of the U.S. Federal Trade Commission (“FTC”) granted final approval of the Agreement Containing Consent Order to Cease and Desist (“Consent Agreement”) previously reached with the FTC staff to resolve the investigation into whether IDEXX had engaged in unfair methods of competition in violation of Section 5 of the Federal Trade Commission Act. Details about the FTC investigation and the resulting Consent Agreement are described in “Part II, Item 1. Legal Proceedings.”

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On September 28, 2012, we entered into a modified agreement with MWI Veterinary Supply, Inc. (“MWI”) that became effective January 1, 2013. Under this modified agreement, MWI is permitted to carry any competitive products without restriction or potential negative consequence. This agreement satisfies the requirements of the Consent Agreement, that we may have exclusive distribution agreements with only two of the three largest U.S. distributors of companion animal veterinary products.  The modification of our agreement with MWI has resulted inseveral of our competitors selling products through MWI, which we expect will add field sales resources of MWI to those of our competitors to sell their products. Under the modified agreement with MWI, we will provide lower compensation to MWI on sales of our products since we will no longer receive the benefits of MWI’s exclusive focus on our products. We have reinvested savings from this lower rate of compensation in other direct sales and marketing resources. We believe that the reallocation of these sales resources will help mitigate the potential effects of the loss of exclusive focus of MWI and the additional field sales resources used by our competitors. However, there can be no assurances that we will be able to fully mitigate the competitive effects of the changes in the nature of our agreement with MWI. Any reduction in the relative effectiveness of our overall selling efforts could have an adverse effect on our results of operations, which we do not believe would be material. 

Our Success Is Heavily Dependent Upon Our Proprietary Technologies  

We rely on a combination of patent, trade secret, trademark and copyright laws to protect our proprietary rights. If we do not have adequate protection of our proprietary rights, our business may be affected by competitors who utilize substantially equivalent technologies that compete with us. 

We cannot ensure that we will obtain issued patents, that any patents issued or licensed to us will remain valid, or that any patents owned or licensed by us will provide protection against competitors with similar technologies. Even if our patents cover products sold by our competitors, the time and expense of litigating to enforce our patent rights could be substantial, and could have a material adverse effect on our results of operations. In addition, expiration of patent rights could result in substantial new competition in the markets for products previously covered by those patent rights. 

In the past, we have received notices claiming that our products infringe third-party patents and we may receive such notices in the future. Patent litigation is complex and expensive, and the outcome of patent litigation can be difficult to predict. We cannot ensure that we will win a patent litigation case or negotiate an acceptable resolution of such a case. If we lose, we may be stopped from selling certain products and/or we may be required to pay damages and/or ongoing royalties as a result of the lawsuit. Any such result could have a material adverse effect on our results of operations. 

Distributor Purchasing Patterns Could Negatively Affect Our Operating Results 

We sell many of our products, including substantially all of the rapid assays and instrument consumables sold in the U.S., through distributors. Distributor purchasing patterns can be unpredictable and may be influenced by factors unrelated to the end-user demand for our products. In addition, our agreements with U.S. distributors may generally be terminated by the distributors for any reason on 60 days prior written notice. Because significant product sales are made to a limited number of distributors, the unanticipated loss of a distributor or unanticipated changes in the frequency, timing or size of distributor purchases, could have a negative effect on our results of operations.  

Distributors of veterinary products have entered into business combinations resulting in fewer distribution companies. Consolidation within distribution channels increases our customer concentration level, which could increase the risks described in the preceding paragraph.

Increased Competition and Technological Advances by Our Competitors Could Negatively Affect Our Operating Results 

We face intense competition within the markets in which we sell our products and services and we expect that future competition may become even more intense. Competition could negatively affect our sales and profitability in a number of ways. New competitors may enter our markets and new or existing competitors may introduce new and competitive products and services, which could be superior to our products and services. Some of our competitors and potential competitors may choose to differentiate themselves by offering similar products and services to ours at lower sales prices, which could have a material adverse effect on our results of operations through loss of market share or a decision to lower our own sales prices to remain competitive. In addition, multiple competitors could bundle product and service offerings through co-marketing or other arrangements, which could enhance their ability to compete with our broad product and service offering. Some of our competitors and potential competitors, including large diagnostic and pharmaceutical companies, have substantially greater financial resources than us, and greater experience in manufacturing, marketing, research and development and obtaining regulatory approvals than we do. 

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Changes in Testing Patterns Could Negatively Affect Our Operating Results

The market for our companion animal, livestock and poultry diagnostic tests and our dairy and water testing products could be negatively impacted by a number of factors impacting testing practices. The introduction or broad market acceptance of vaccines or preventatives for the diseases and conditions for which we sell diagnostic tests and services could result in a decline in testing. Changes in accepted medical protocols regarding the diagnosis of certain diseases and conditions could have a similar effect. Eradication or substantial declines in the prevalence of certain diseases also could lead to a decline in diagnostic testing for such diseases. Our livestock and poultry products business in particular is subject to fluctuations resulting from changes in disease prevalence. In addition, changes in government regulations or in the availability of government funds available for monitoring programs could negatively affect sales of our products that are driven by compliance testing, such as our livestock and poultry, dairy and water products. Declines in testing for any of the reasons described, along with lost opportunities associated with a reduction in veterinary visits, could have a material adverse effect on our results of operations. 

Effective January 1, 2009, the age at which healthy cattle to be slaughtered are required to be tested for bovine spongiform encephalopathy (“BSE” or “mad cow disease”) in the European Union was increased from 30 months to 48 months, which reduced the population of cattle tested by approximately 30%. In February 2011, the European Union’s Standing Committee on the Food Chain and Animal Health (“SCFCAH”) agreed to allow its member states to further raise the recommended testing age to 72 months, effective July 1, 2011, which further reduced the population of cattle tested. In December 2012, the SCFCAH agreed to allow European Union member states the option to eliminate BSE testing of healthy cattle at slaughter effective March 2013. The demand for our BSE testing products has been negatively impacted as a result of these regulatory changes and could be further impacted by further changes that could be made in the future. Revenue from BSE testing products was less than $10 million during the twelve months ended December 31, 2012.

Increase in Corporate Hospital Ownership and Prevalence of Buying Consortiums Could Negatively Affect Our Business

An increasing percentage of veterinary hospitals in the U.S. is owned by corporations that are in the business of acquiring veterinary hospitals and/or opening new veterinary hospitals nationally or regionally. Major corporate hospital owners in the U.S. include Banfield Pet Hospital, VCA Antech, Inc., and National Veterinary Associates, each of which is currently a customer of IDEXX. A similar trend exists in the U.K. and the Nordic countries and may in the future also develop in other countries. Furthermore, an increasing percentage of individually owned veterinary hospitals in the U.S. are participating in buying consortiums. Corporate owners of veterinary hospitals and buying consortiums often seek to improve profitability by leveraging the buying power they derive from their scale to obtain favorable pricing from suppliers, which could have a negative impact on our results of operations. While we have strong supplier relationships with several corporate hospital groups and buying consortiums that we believe are positive for our business, decisions by larger corporate owners and buying consortiums, in particular Banfield Pet Hospital, to shift their purchasing of products and services away from us and to a competitor would have a negative impact on our results of operations, which could be material. In addition, certain corporate owners, most notably VCA Antech Inc., our primary competitor in the U.S. and Canadian markets for veterinary reference laboratory diagnostic services, also operate reference laboratories that serve both their hospitals and unaffiliated hospitals. Any hospitals acquired by these companies generally use their reference laboratory services almost exclusively and shift a large portion of their testing from in-clinic testing to their reference laboratories. Furthermore, because these companies compete with us in the reference laboratory services marketplace, hospitals acquired by these companies may cease to be customers or potential customers of our other companion animal products and services, which would cause our sales of these products and services to decline.  

Our Limited Experience and Small Scale in the Human Point-of-Care Market Could Inhibit Our Success in this Market 

We have limited experience in the human point-of-care medical diagnostics market and we operate at a small scale in this market. This market differs in many respects from the veterinary diagnostic market. Significant differences include the impact of third party reimbursement on diagnostic testing, more extensive regulation, greater product liability risks, larger competitors, a more segmented customer base and more rapid technological innovation. Our limited experience and small scale in the human point-of-care medical diagnostics market could negatively affect our ability to successfully manage the risks and features of this market that differ from the veterinary diagnostic market. There can be no assurance that we will be successful in achieving growth and profitability in the human point-of-care medical diagnostics market comparable to the results we have achieved in the veterinary diagnostic market. 

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Risks Associated with Doing Business Internationally Could Negatively Affect Our Operating Results

For the three months ended March 31, 2013 and 2012, approximately 41% of our revenue was attributable to sales of products and services to customers outside the U.S. Various possible risks associated with foreign operations may impact our international sales, including disruptions in transportation of our products, the differing product and service needs of foreign customers, difficulties in building and managing foreign operations, import/export duties and licensing requirements, natural disasters and unexpected regulatory and economic or political changes in foreign markets. Further, prices that we charge to foreign customers may be different than the prices we charge for the same products in the U.S. due to competitive, market or other factors. Our results of operations are also susceptible to changes in foreign currency exchange rates. As a result, the mix of domestic and international sales in a particular period could have a material impact on our results of operations for that period.  

Our Operations are Vulnerable to Interruption as a Result of Natural and Man-Made Disasters or System Failures  

The operation of all of our facilities may be vulnerable to interruption as a result of natural and man-made disasters, interruptions in power supply or other system failures. While we maintain plans to continue business under such circumstances, there can be no assurance that such plans will be successful in fully or partially mitigating the effects of such events. 

We manufacture many of our significant companion animal products, including our rapid assay devices and certain instruments, many of our water testing products and certain of our livestock, poultry and dairy testing products, at a single facility in Westbrook, Maine. Certain of our companion animal products, as well as our human point-of-care products, are manufactured in Roswell, Georgia. We also manufacture certain of our livestock and poultry testing products in Bern, Switzerland and Montpellier, France. In addition, we maintain major distribution facilities in North America and in the Netherlands and major reference laboratories in Memphis, Tennessee; Leipzig, Germany; Ludwigsburg, Germany; Sacramento, California; Elmhurst, Illinois; North Grafton, Massachusetts; East Brisbane, Australia; Markham, Ontario; and Wetherby, the United Kingdom. Therefore, interruption of operations at any of these facilities could have a material adverse effect on our results of operations given our customers expect rapid turnaround times. 

We rely on several information systems throughout our company to keep financial records, process customer orders, manage inventory, process shipments to customers and operate other critical functions. If we were to experience a system disruption that impacts any of our critical functions, it could result in the loss of sales and customers, financial misstatement and significant incremental costs, which could adversely affect our business. 

We maintain property and business interruption insurance to insure against the financial impact of certain events of this nature. However, this insurance may be insufficient to compensate us for the full amount of any losses that we may incur. In addition, such insurance will not compensate us for the long-term competitive effects of being out of the market for the period of any interruption in operations. 

We Could Be Subject to Class Action Litigation Due to Stock Price Volatility, which, if it Occurs, Could Result in Substantial Costs or Large Judgments Against Us 

The market for our common stock may experience extreme price and volume fluctuations, which may be unrelated or disproportionate to our operating performance or prospects. Securities class action litigation has often been brought against companies following periods of volatility in the market prices of their securities. We may be the target of similar litigation in the future. Securities litigation could result in substantial costs and divert our management’s attention and resources, which could have a negative effect on our business, operating results and financial condition. 

If Our Quarterly or Annual Results of Operations Fluctuate, This Fluctuation May Cause Our Stock Price to Decline, Resulting in Losses to You 

Our prior operating results have fluctuated due to a number of factors, including seasonality of certain product lines; changes in our accounting estimates; the impact of acquisitions; timing of distributor purchases, product launches, operating expenditures, marketing programs, changes in foreign currency exchange rates, and litigation and claim-related expenditures; changes in competitors’ product offerings; changes in the economy affecting consumer spending; and other matters. Similarly, our future operating results may vary significantly from quarter to quarter or year to year due to these and other factors, many of which are beyond our control. If our operating results or projections of future operating results do not meet the expectations of market analysts or investors in future periods, our stock price may fall. 

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Future Operating Results Could Be Negatively Affected by the Resolution of Various Uncertain Tax Positions and by Potential Changes to Tax Incentives

In the ordinary course of our business, there are many transactions and calculations where the ultimate tax determination is uncertain. Significant judgment is required in determining our worldwide provision for income taxes. We periodically assess our exposures related to our worldwide provision for income taxes and believe that we have appropriately accrued taxes for contingencies. Any reduction of these contingent liabilities or additional assessments would increase or decrease income, respectively, in the period such determination was made. Our income tax filings are regularly under audit by tax authorities and the final determination of tax audits could be materially different than that which is reflected in historical income tax provisions and accruals. Additionally, we benefit from certain tax incentives offered by various jurisdictions. If we are unable to meet the requirements of such incentives, or if they expire or are renewed at less favorable terms, our inability to realize these benefits could have a material negative effect on future earnings.  

Restrictions in Our Credit Facility or Our Inability to Obtain Financing on Favorable Terms May Limit Our Activities

Our ability to satisfy our obligations under our unsecured revolving credit facility (“Credit Facility”) depends on our future operating performance and on economic, financial, competitive and other factors beyond our control. Our business may not generate sufficient cash flows to meet these obligations or generate sufficient levels of earnings to satisfy the applicable affirmative, negative and financial covenants. Our failure to comply with these covenants and the other terms of the Credit Facility could result in an event of default and acceleration of our obligations under the Credit Facility, which may require us to seek additional financing or restructure existing debt and possibly on terms not deemed favorable. 

We fund our operations, capital purchase requirements and strategic growth needs through cash on hand, funds generated from operations and amounts available under our Credit Facility. If we were unable to obtain financing on favorable terms, we could face restrictions that would limit our ability to execute certain strategies, which could have an adverse effect on our revenue growth and profitability.

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

During the three months ended March 31, 2013, 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 (c)	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (d)
January 1 to January 31, 2013	117,900	$	95.11	117,900	2,795,620
February 1 to February 28, 2013	250,266		92.86	205,200	2,590,420
March 1 to March 31, 2013	364,115		91.92	364,000	2,226,420
Total	732,281	$	92.75	687,100	2,226,420

Our board of directors has approved the repurchase of up to 48 million shares of our common stock in the open market or in negotiated transactions. The plan was approved and announced on August 13, 1999, and subsequently amended on October 4, 1999, November 16, 1999, July 21, 2000, October 20, 2003, October 12, 2004, October 12, 2005, February 14, 2007, February 13, 2008, February 10, 2010 and October 12, 2011 and does not have a specified expiration date. There were no other repurchase plans outstanding during the three months ended March 31, 2013, and no repurchase plans expired during the period. Repurchases of 687,100 shares were made during the three months ended March 31, 2013 in transactions made pursuant to our repurchase plan. 

During the three months ended March 31, 2013, we received 45,181 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 be purchased under the repurchase plan.

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Item 5.   Other Information

On February 28, 2013, our Chairman and Chief Executive Officer, Jonathan W. Ayers, established a plan pursuant to Rule 10b5-1 of the Securities Exchange Act of 1934 with respect to stock options that are scheduled to expire on various dates in February 2014. Under the plan, Mr. Ayers may exercise, under pre-arranged terms, options to purchase 363,688 shares of IDEXX common stock and sell a portion of the shares received on exercise.

Of the shares acquired on exercise, Mr. Ayers will retain shares having a value equal to approximately 50% of the spread between the market price of the stock and the option exercise price, after taxes and transaction expenses. He intends to sell the remaining shares to cover the exercise price, transaction expenses and taxes, and to diversify his assets. 

The transactions under the 10b5-1 plan are expected to occur between October 2013 and February 2014, and will be disclosed publically as they occur through Form 144 and Form 4 filings with the Securities and Exchange Commission.

Rule 10b5-1 plans permit individuals who are not in possession of material nonpublic information to establish pre-arranged plans to buy and sell company stock. These plans allow individuals to complete a plan of stock option exercises and associated stock sales gradually over a period of time with advance notification to the market, while avoiding concerns about whether they were aware of material nonpublic information at the time transactions under the plan are executed. 

Except as may otherwise be required, the Company does not undertake any obligation to update or report any modification, termination or other activity under Mr. Ayers’s Rule 10b5-1 plan.

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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.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

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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/ Merilee Raines
Date: April 23, 2013	Merilee Raines
	Executive Vice President, Chief Financial Officer and Treasurer
	(Principal Financial Officer)

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Exhibit Index

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.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

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EX-31.(A)

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 W. Ayers, certify that:

1) I have reviewed this report on Form 10-Q for the quarter endedMarch 31, 2013 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: April 23, 2013	/s/ Jonathan W. Ayers
	Jonathan W. Ayers, Chairman,
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.(B)

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, Merilee Raines, certify that:

1) I have reviewed this report on Form 10-Q for the quarter ended March 31, 2013of 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: April 23, 2013	/s/ Merilee Raines
	Merilee Raines
	Executive Vice President, Chief Financial Officer
	and Treasurer
	(Principal Financial Officer)

EX-32.(A)

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 March 31, 2013 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.

Date:  April 23, 2013	/s/ Jonathan W. Ayers
	Jonathan W. Ayers, Chairman,
	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.(B)

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 March 31, 2013 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.

Date:  April 23, 2013	/s/ Merilee Raines
	Merilee Raines
	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.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

Schedule Of Fair Value Of Assets And Liabilities Measured On Recurring Basis

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of March 31, 2013	(Level 1)		(Level 2)		(Level 3)		March 31, 2013
Assets
Money market funds(1)	$	136,587	$	-	$	-	$	136,587
Equity mutual funds(2)		2,438		-		-		2,438
Foreign currency exchange contracts(3)		-		5,341		-		5,341
Liabilities
Foreign currency exchange contracts(3)		-		778		-		778
Deferred compensation(4)		2,438		-		-		2,438
Interest rate swaps(5)		-		2,606		-		2,606

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of December 31, 2012	(Level 1)		(Level 2)		(Level 3)		December 31, 2012
Assets
Money market funds(1)	$	127,576	$	-	$	-	$	127,576
Equity mutual funds(2)		2,320		-		-		2,320
Foreign currency exchange contracts(3)		-		2,128		-		2,128
Liabilities
Foreign currency exchange contracts(3)		-		2,193		-		2,193
Deferred compensation(4)		2,320		-		-		2,320
Interest rate swaps(5)		-		2,682		-		2,682

_____________

(1) Money market funds are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of March 31, 2013 and December 31, 2012 was 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, net. See number (4) below for a discussion of the related deferred compensation liability.

(3) Foreign currency exchange contracts are included within other current assets; other long-term assets, net; 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 combinationis included within 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 number (2) above.

(5) Interest rate swaps are included within accrued liabilities.

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Segment Reporting (Summary Of Segment Performance) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 332,106	$ 322,676
Income (loss) from operations	61,188	60,407
Interest expense, net	(391)	(757)
Income before provision for income taxes	60,797	59,650
Provision for income taxes	15,930	18,916
Net income	44,867	40,734
Less: Net income (loss) attributable to noncontrolling interest	7	(9)
Net income attributable to IDEXX Laboratories, Inc. stockholders	44,860	40,743
CAG Segment [Member]
Segment Reporting Information [Line Items]
Revenue	276,941	268,073
Income (loss) from operations	51,309	46,918
Water Segment [Member]
Segment Reporting Information [Line Items]
Revenue	20,666	19,582
Income (loss) from operations	8,355	8,295
LPD Segment [Member]
Segment Reporting Information [Line Items]
Revenue	28,039	29,116
Income (loss) from operations	4,836	6,017
Other Segment [Member]
Segment Reporting Information [Line Items]
Revenue	6,460	5,905
Income (loss) from operations	435	(213)
Unallocated Amounts [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (3,747)	$ (610)

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Repurchases Of Common Stock (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Repurchases Of Common Stock [Abstract]
Shares repurchased	687,000	333,000
Total cost of shares repurchased	$ 63,778,000	$ 27,630,000
Average cost per share	$ 92.82	$ 82.85
Shares acquired through employee surrenders	45,181	48,574
Cost of shares acquired through employee surrenders	$ 4,100,000	$ 4,200,000

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Segment Reporting (Summary Of Revenue By Product And Service Category) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 332,106	$ 322,676
VetLab Instruments and Consumables [Member]
Segment Reporting Information [Line Items]
Revenue	103,671	101,997
Rapid Assay Products [Member]
Segment Reporting Information [Line Items]
Revenue	44,083	43,664
Reference Laboratory Diagnostic And Consulting Services [Member]
Segment Reporting Information [Line Items]
Revenue	107,649	101,862
Practice Management and Digital Imaging Systems and Services [Member]
Segment Reporting Information [Line Items]
Revenue	21,538	20,550
CAG Segment [Member]
Segment Reporting Information [Line Items]
Revenue	276,941	268,073
Water Segment [Member]
Segment Reporting Information [Line Items]
Revenue	20,666	19,582
LPD Segment [Member]
Segment Reporting Information [Line Items]
Revenue	28,039	29,116
Other Segment [Member]
Segment Reporting Information [Line Items]
Revenue	$ 6,460	$ 5,905

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Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accrued Liabilities [Abstract]
Accrued expenses	$ 44,144	$ 43,026
Accrued employee compensation and related expenses	39,078	53,408
Accrued taxes	10,173	14,945
Accrued customer programs	25,075	26,367
Accrued liabilities	$ 118,470	$ 137,746

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Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Accrued Liabilities [Abstract]

Schedule Of Accrued Liabilities

	March 31,		December 31,
	2013		2012
Accrued expenses	$	44,144	$	43,026
Accrued employee compensation and related expenses		39,078		53,408
Accrued taxes		10,173		14,945
Accrued customer programs		25,075		26,367
	$	118,470	$	137,746

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Derivative Instruments And Hedging (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Derivative [Line Items]
Estimated net amount of gains that are expected to be reclassified out of accumulated other comprehensive income and into earnings within the next 12 months	$ 1.6
General duration of foreign currency exchange contracts	less than 24 months
Interest Rate Swap Effective On March 30, 2012 [Member]
Derivative [Line Items]
Fixed portion of interest rate associated with interest rate swap	1.36%
Credit Facility borrowings hedged	40
Interest Rate Swap Effective On March 30, 2010 [Member]
Derivative [Line Items]
Fixed portion of interest rate associated with interest rate swap	2.00%
Credit Facility borrowings hedged	80
Interest Rate Swap Effective On March 28, 2013 [Member]
Derivative [Line Items]
Fixed portion of interest rate associated with interest rate swap	1.64%
Credit Facility borrowings hedged	$ 40

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Inventories (Policy)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Inventories Policy

Inventories include material, labor and overhead, and are stated at the lower of cost (first-in, first-out) or market.

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Accumulated Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Accumulated Other Comprehensive Income [Abstract]
Beginning balance, Unrealized loss on investments, net of tax	$ (171)
Beginning balance, Unrealized gain on derivatives instruments, net of tax	(2,070)
Beginning balance, Unrealized gain on cumulative translation adjustment	18,195
Unrealized gain on investments, net of tax expense of $42 in 2013 and $65 in 2012	72	111
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	4,118	(906)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Gains Included in Net Income, Net of Tax	(10)	(795)
Translation Adjustment Functional to Reporting Currency, Net of Tax, Period Increase (Decrease)	(8,447)	5,628
Current-period other comprehensive income (loss), Unrealized (loss) gain on derivatives instruments, net of tax	4,108	(1,701)
Current-period other comprehensive income (loss), Unrealized gain (loss) on cumulative translation adjustment	(8,447)	5,628
OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	(4,257)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(10)
Ending balance, Unrealized loss on investments, net of tax	(99)
Ending balance, Unrealized loss on derivatives instruments, net of tax	2,038
Ending balance, Unrealized gain on cumulative translation adjustment	9,748
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	15,954
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ 11,687

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Share-Based Compensation (Schedule Of Weighted Averages Of The Assumptions Used In Estimating The Fair Value Of Stock Option Awards) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-Based Compensation [Abstract]
Expected stock price volatility	33.00%	34.00%
Expected term, in years	4 years 7 months 9 days	4 years 7 months 9 days
Risk-free interest rate	0.90%	0.80%
Weighted average fair value of options granted	$ 26.58	$ 26.36

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule Of Reconciliation Of Shares Outstanding For Basic And Diluted Earnings Per Share

	For the Three Months Ended March 31,
	2013	2012
Shares outstanding for basic earnings per share:	54,588	55,208
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	54,588	55,208
Dilutive effect of share-based payment awards	902	1,231
	55,490	56,439

Schedule Of Number Of Anti-Dilutive Stock Options and Restricted Stock Units

	For the Three Months Ended March 31,
	2013	2012
Weighted average number of shares underlying anti-dilutive options	441	618
Weighted average number of shares underlying anti-dilutive restricted stock units	0	50

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Earnings Per Share (Schedule Of Reconciliation Of Shares Outstanding For Basic And Diluted Earnings Per Share) (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Abstract]
Shares outstanding for basic earnings per share	54,588	55,208
Dilutive effect of share-based payment awards	902	1,231
Shares outstanding for diluted earnings per share	55,490	56,439

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Derivative Instruments And Hedging (Gain (Loss) Recognized In Other Comprehensive Income On Derivative Instruments (Effective Portion)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion), Net of Tax	$ 4,108	$ (1,701)
Foreign Currency Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion), Net of Tax	4,061	(1,811)
Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion), Net of Tax	$ 47	$ 110

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Warranty Reserves (Summary Of Changes In Accrued Warranty Reserves) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Warranty Reserves [Abstract]
Balance, beginning of period	$ 1,583	$ 1,693
Provision for warranty expense	321	561
Change in estimate, balance beginning of period	(132)	(60)
Settlement of warranty liability	(428)	(621)
Balance, end of period	$ 1,344	$ 1,573

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Accounting Policies

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Accounting Policies

Note 2.      ACCOUNTING POLICIES  

Significant Accounting Policies 

The significant accounting policies used in preparation of these condensed consolidated financial statements for the three months ended March 31, 2013 are consistent with those discussed in Note 2 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012. 

New Accounting Pronouncements Adopted 

 In December 2011, the Financial Accounting Standards Board (“FASB”) issued an amendment to the accounting guidance for disclosure of offsetting assets and liabilities and related arrangements. The amendment expands the disclosure requirements so that entities are now required to disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. The amendment is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013, and shall be applied retrospectively. The adoption of this accounting pronouncement did not have a material impact on our financial statement disclosures. See Note 16 for additional information regarding derivative instruments subject to master netting arrangements.

In February 2013, the FASB issued an amendment to the accounting guidance for the reporting of amounts reclassified out of accumulated other comprehensive income (“AOCI”). The amendment expands the existing disclosure by requiring entities to present information about significant items reclassified out of AOCI by component. In addition, an entity is required to provide information about the effects on net income of significant amounts reclassified out of each component of AOCI to net income either on the face of the statement where net income is presented or as a separate disclosure in the notes of the financial statements. The amendment is effective prospectively for annual or interim reporting periods beginning after December 15, 2012. The adoption of this accounting pronouncement did not have a material impact on our financial statement disclosures. See Note 11 for additional information regarding accumulated other comprehensive income.

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Derivative Instruments and Hedging (Schedule of Derivatives Subject to Master Netting Arrangements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	$ 5,341	$ 2,128
Total derivative instruments, fair value of liabilities	3,384	4,875
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net	778	1,918
Derivative Assets	4,563	210
Derivative Liabilities	2,606	2,957
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	3,384	4,875
Foreign Currency Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	5,341	2,128
Total derivative instruments, fair value of liabilities	778	2,193
Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net	778	1,918
Derivative Assets	4,563	210
Derivative Liabilities		275
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	4,721	2,128
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Long-Term Assets Net [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	620
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Accrued Liabilties [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	765	2,193
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	13
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	2,606	2,682
Derivative Liabilities	2,606	2,682
Interest Rate Swaps [Member] | Derivatives Designated As Hedging Instruments [Member] | Accrued Liabilties [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	$ 2,606	$ 2,682

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Inventories (Schedule Of Components Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Inventories [Abstract]
Raw materials	$ 26,653	$ 26,986
Work-in-process	15,247	16,031
Finished goods	106,342	97,929
Inventories	$ 148,242	$ 140,946

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Derivative Instruments And Hedging (Policy)

9 Months Ended

Sep. 30, 2012

Derivative Instruments And Hedging [Abstract]

Derivatives Policy

We are exposed to certain risks related to our ongoing business operations. The primary risks that we manage by using derivative instruments are foreign currency exchange risk and interest rate risk. 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 foreign currency exchange contracts to minimize the impact of foreign currency fluctuations associated with specific, significant transactions. We enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with our variable-rate debt.

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions. 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 large multinational financial institutions and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management.

We recognize all derivative instruments, including our foreign currency exchange contracts and interest rate swap agreements, on the balance sheet at fair value at the balance sheet date. Derivative 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 hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions.  If a derivative instrument qualifies for hedge accounting, changes in the fair value of the derivative instrument from the effective portion of the hedge are deferred in other comprehensive income (“OCI”), 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 hedge instrument is not effective in achieving offsetting changes in fair value. We de-designate derivative 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 OCI 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 11 for further information regarding the effect of derivative instruments designated as cash flow hedges on the condensed consolidated statement of operations for the three months ended March 31, 2013 and 2012.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit 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 accompanying condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts and interest rate swaps 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 and variable-to-fixed interest rate swaps 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 and interest rates. Unless noted otherwise, we have also designated our derivative instruments as qualifying for hedge accounting treatment.

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Fair Value Measurements (Policy)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Fair Value Measurements Policy

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.

The Company has 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 nonrecurring basis and certain financial assets and liabilities that are not measured at fair value in our 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 significant nonfinancial assets or nonfinancial liabilities which required remeasurement during the three months ended March 31, 2013. We did not have any transfers between Level 1 and Level 2 or transfers in or out of Level 3 of the fair value hierarchy during the three months ended March 31, 2013.

Our foreign currency exchange contracts and interest rate swap agreements are measured at fair value on a recurring basis in our accompanying 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. We measure the fair value of our interest rate swaps classified as derivative instruments using an income approach, utilizing a discounted cash flow analysis based on the terms of the contract and the interest rate curve adjusted for counterparty risk.

The amount outstanding under our unsecured revolving credit facility (“Credit Facility”), notes receivable and long-term debt are measured at carrying value in our accompanying 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, notes receivable 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, while our notes receivable, representing a strategic investment in a privately held company with a carrying value of $4.7 million as of March 31, 2013,  are valued using level 3 inputs. The results of these calculations yield fair values that approximate carrying values.

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Fair Value Measurements (Schedule Of Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) (USD $)	Mar. 31, 2013		Dec. 31, 2012
Prepaid Expense and Other Assets [Abstract]
Carrying value of notes receivable	$ 4,700,000
Measured At Fair Value On Recurring Basis [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	136,587,000	[1]	127,576,000
Measured At Fair Value On Recurring Basis [Member] | Money Market Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	136,587,000	[1]	127,576,000
Measured At Fair Value On Recurring Basis [Member] | Equity Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	2,438,000	[2]	2,320,000
Measured At Fair Value On Recurring Basis [Member] | Equity Mutual Funds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	2,438,000	[2]	2,320,000
Measured At Fair Value On Recurring Basis [Member] | Foreign Currency Exchange Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	5,341,000	[3]	2,128,000
Fair value of Liabilities	778,000	[3]	2,193,000
Measured At Fair Value On Recurring Basis [Member] | Foreign Currency Exchange Contracts [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Assets	5,341,000	[3]	2,128,000
Fair value of Liabilities	778,000	[3]	2,193,000
Measured At Fair Value On Recurring Basis [Member] | Deferred Compensation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Liabilities	2,438,000	[4]	2,320,000
Measured At Fair Value On Recurring Basis [Member] | Deferred Compensation [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Liabilities	2,438,000	[4]	2,320,000
Measured At Fair Value On Recurring Basis [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Liabilities	2,606,000	[5]	2,682,000
Measured At Fair Value On Recurring Basis [Member] | Interest Rate Swaps [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of Liabilities	$ 2,606,000	[5]	$ 2,682,000

[1] Money market funds are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of March 31, 2013 and December 31, 2012 was 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, net. See number (4) below for a discussion of the related deferred compensation liability.

[3] Foreign currency exchange contracts are included within other current assets; other long-term assets, net; accrued liabilities; or other long-term liabilities depending on the gain (loss) position and anticipated settlement date.  A

[4] A deferred compensation plan assumed as part of a previous business combination is included within 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 number (2) above.

[5] Interest rate swaps are included within accrued liabilities.

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Goodwill and Intangible Assets, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Goodwill And Intangible Assets [Abstract]
Customer list acquired	$ 1.0

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Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Share-Based Compensation [Abstract]

Schedule Of Weighted Averages Of The Assumptions Used In Estimating The Fair Value Of Stock Option Awards

	For the Three Months Ended March 31,
		2013			2012
Expected stock price volatility		33	%		34	%
Expected term, in years		4.6			4.6
Risk-free interest rate		0.9	%		0.8	%
Weighted average fair value of options granted	$	26.58		$	26.36

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Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Schedule Of Components Of Inventories

	March 31,		December 31,
		2013		2012
Raw materials	$	26,653	$	26,986
Work-in-process		15,247		16,031
Finished goods		106,342		97,929
	$	148,242	$	140,946

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Basis Of Presentation And Principles Of Consolidation

3 Months Ended

Mar. 31, 2013

Basis Of Presentation And Principles Of Consolidation [Abstract]

Basis Of Presentation And Principles Of Consolidation

NOTE 1.      BASIS OF PRESENTATION AND PRINCIPLES OF CONSOLIDATION 

The accompanying condensed consolidated financial statements of IDEXX Laboratories, Inc. (“IDEXX,” the “Company,” “we” or “our”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“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 Form 10-Q. 

The accompanying condensed consolidated financial statements include the accounts of IDEXX Laboratories, Inc. and our wholly-owned and majority-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. 

The accompanying 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, 2012 was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. The results of operations for the three months ended March 31, 2013 are not necessarily indicative of the results to be expected for the full year or any future period. These condensed consolidated financial statements should be read in conjunction with this Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 and our Annual Report on Form 10-K for the year ended December 31, 2012 filed with the Securities and Exchange Commission.

Certain reclassifications have been made to the prior year condensed consolidated financial statements to conform to the current year presentation. Reclassifications had no material impact on previously reported results of operations, financial position or cash flows.

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Other Noncurrent Assets (Tables)

3 Months Ended

Mar. 31, 2013

Other Noncurrent Assets [Abstract]

Schedule Of Other Noncurrent Assets

	March 31,		December 31,
		2013		2012
Investment in long-term product supply arrangements	$	10,079	$	10,324
Customer acquisition costs, net		21,187		21,795
Other assets		19,740		18,942
	$	51,006	$	51,061

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Derivative Instruments And Hedging (Tables)

3 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Derivative [Line Items]

Gain/(Loss) Recognized In Other Comprehensive Income On Derivative Instruments (Effective Portion)

	Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)
	For the Three Months Ended March 31,
Derivative instruments		2013		2012
Foreign currency exchange contracts, net of tax	$	4,061	$	(1,811)
Interest rate swaps, net of tax		47		110
Total derivative instruments, net of tax	$	4,108	$	(1,701)

Offsetting Assets & Liabilities [Table Text Block]

As of March 31, 2013
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	5,341	$	-	$	5,341	$	778	$	4,563
Total derivative assets	$	5,341	$	-	$	5,341	$	778	$	4,563
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	778	$	-	$	778	$	778	$	-
Interest rate swaps		2,606		-		2,606		-		2,606
Total derivative liabilities	$	3,384	$	-	$	3,384	$	778	$	2,606

As of December 31, 2012
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,128	$	-	$	2,128	$	1,918	$	210
Total derivative assets	$	2,128	$	-	$	2,128	$	1,918	$	210
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,193	$	-	$	2,193	$	1,918	$	275
Interest rate swaps		2,682		-		2,682		-		2,682
Total derivative liabilities	$	4,875	$	-	$	4,875	$	1,918	$	2,957

Interest Rate Swaps [Member]

Derivative [Line Items]

Schedule Of Notional Amounts Of Foreign Currency Exchange Contracts And Interest Rate Swap Agreements

	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Interest rate swap commencing March 30, 2012 and expiring June 30, 2016	$	40,000	$	40,000
Interest rate swap commencing March 28, 2013 and expiring June 30, 2016	$	40,000	$	40,000

Assets [Member]

Derivative [Line Items]

Schedule Of Fair Values And Balance Sheet Classifications Of Derivatives Designated As Hedging Instruments

		Asset Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	4,721	$	2,128
Foreign currency exchange contracts	Other long-term assets, net		620		-
Total derivative instruments		$	5,341	$	2,128

Liabilities [Member]

Derivative [Line Items]

Schedule Of Fair Values And Balance Sheet Classifications Of Derivatives Designated As Hedging Instruments

		Liability Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	765	$	2,193
Foreign currency exchange contracts	Other long-term liabilities		13		-
Interest rate swaps	Accrued liabilities		2,606		2,682
Total derivative instruments		$	3,384	$	4,875

Currency Sold [Member]

Derivative [Line Items]

Schedule Of Notional Amounts Of Foreign Currency Exchange Contracts And Interest Rate Swap Agreements

Currency Sold	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Euro	$	54,660	$	57,720
British pound		26,570		28,520
Japanese yen		19,800		22,450
Canadian dollar		21,200		22,440
Australian dollar		12,500		13,050
	$	134,730	$	144,180

Currency Purchased [Member]

Derivative [Line Items]

Schedule Of Notional Amounts Of Foreign Currency Exchange Contracts And Interest Rate Swap Agreements

Currency Purchased	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Swiss franc	$	9,750	$	12,820

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Earnings Per Share (Schedule Of Number Of Anti-Dilutive Stock Options and Restricted Stock Units) (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restricted Stock Units [Member]
Antidilutive Securities [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	50
Stock Options [Member]
Antidilutive Securities [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	441	618

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 228,364	$ 223,986
Accounts receivable, net of reserves of $3,053 in 2013 and $2,632 in 2012	158,988	138,324
Inventories	148,242	140,946
Deferred income tax assets	25,719	27,714
Other current assets	33,082	38,567
Total current assets	594,395	569,537
Long-Term Assets:
Property and equipment, net	253,742	245,177
Goodwill	172,459	174,994
Intangible assets, net	61,036	62,833
Other long-term assets, net	51,006	51,061
Total long-term assets	538,243	534,065
TOTAL ASSETS	1,132,638	1,103,602
Current Liabilities:
Accounts payable	38,716	35,288
Accrued liabilities	118,470	137,746
Line of credit	260,000	212,000
Current portion of long-term debt	1,122	1,107
Current portion of deferred revenue	21,269	20,192
Total current liabilities	439,577	406,333
Long-Term Liabilities:
Deferred income tax liabilities	22,955	23,028
Long-term debt, net of current portion	1,141	1,394
Long-term deferred revenue, net of current portion	12,851	12,692
Other long-term liabilities	24,819	23,898
Total long-term liabilities	61,766	61,012
Total liabilities	501,343	467,345
Commitments and Contingencies (Note 13)
Stockholders' Equity:
Common stock, $0.10 par value per share: Authorized: 120,000 shares; Issued: 100,608 and 100,160 shares in 2013 and 2012, respectively	10,061	10,016
Additional paid-in capital	779,261	757,214
Deferred stock units: Outstanding: 119 units in 2013 and 2012	4,815	4,630
Retained earnings	1,350,453	1,305,593
Accumulated other comprehensive income	11,687	15,954
Treasury stock, at cost: 46,381 and 45,652 shares in 2013 and 2012, respectively	(1,525,023)	(1,457,184)
Total IDEXX Laboratories, Inc. stockholders' equity	631,254	636,223
Noncontrolling interest	41	34
Total stockholders' equity	631,295	636,257
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,132,638	$ 1,103,602

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Other Noncurrent Assets (Schedule Of Other Noncurrent Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Other Noncurrent Assets [Abstract]
Investment in long-term product supply arrangements	$ 10,079	$ 10,324
Customer acquisition costs, net	21,187	21,795
Other assets	19,740	18,942
Other long-term assets, net	$ 51,006	$ 51,061

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Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Unrealized gain on investments, tax expense	$ 42	$ 65
Unrealized gain (loss), tax expense (benefit)	1,699	(434)
Reclassification adjustment for gains included in net income, tax benefit (expense)	$ 8	$ (341)

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Derivative Instruments And Hedging (Schedule Of Notional Amounts Of Foreign Currency Exchange Contracts And Interest Rate Swap Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Interest Rate Swap Commencing March 30, 2012 And Expiring June 30, 2016 [Member]
Derivative [Line Items]
Notional amount of forward fixed interest rate swap	$ 40,000	$ 40,000
Interest Rate Swap Commencing March 28, 2013 And Expiring June 30, 2016 [Member]
Derivative [Line Items]
Notional amount of forward fixed interest rate swap	$ 40,000	$ 40,000

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Repurchases Of Common Stock (Tables)

3 Months Ended

Mar. 31, 2013

Repurchases Of Common Stock [Abstract]

Schedule Of Common Stock Repurchases

	For the Three Months Ended March 31,
	2013		2012
Shares repurchased		687		333
Total cost of shares repurchased	$	63,778	$	27,630
Average cost per share	$	92.82	$	82.85

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Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

Fair Value Measurements

Note 15.     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.

The Company has 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 nonrecurring basis and certain financial assets and liabilities that are not measured at fair value in our 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 significant nonfinancial assets or nonfinancial liabilities which required remeasurement during the three months ended March 31, 2013. We did not have any transfers between Level 1 and Level 2 or transfers in or out of Level 3 of the fair value hierarchy during the three months ended March 31, 2013.

Our foreign currency exchange contracts and interest rate swap agreements are measured at fair value on a recurring basis in our accompanying 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. We measure the fair value of our interest rate swaps classified as derivative instruments using an income approach, utilizing a discounted cash flow analysis based on the terms of the contract and the interest rate curve adjusted for counterparty risk.

The amount outstanding under our unsecured revolving credit facility (“Credit Facility”), notes receivable and long-term debt are measured at carrying value in our accompanying 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, notes receivable 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, while our notes receivable, representing a strategic investment in a privately held company with a carrying value of $4.7 million as of March 31, 2013,  are valued using level 3 inputs. The results of these calculations yield fair values that approximate carrying values.

The following tables set forth our assets and liabilities that were measured at fair value on a recurring basis at March 31, 2013 and at December 31, 2012 by level within the fair value hierarchy (in thousands):

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of March 31, 2013	(Level 1)		(Level 2)		(Level 3)		March 31, 2013
Assets
Money market funds(1)	$	136,587	$	-	$	-	$	136,587
Equity mutual funds(2)		2,438		-		-		2,438
Foreign currency exchange contracts(3)		-		5,341		-		5,341
Liabilities
Foreign currency exchange contracts(3)		-		778		-		778
Deferred compensation(4)		2,438		-		-		2,438
Interest rate swaps(5)		-		2,606		-		2,606

	Quoted Prices		Significant
	in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs		Balance at
As of December 31, 2012	(Level 1)		(Level 2)		(Level 3)		December 31, 2012
Assets
Money market funds(1)	$	127,576	$	-	$	-	$	127,576
Equity mutual funds(2)		2,320		-		-		2,320
Foreign currency exchange contracts(3)		-		2,128		-		2,128
Liabilities
Foreign currency exchange contracts(3)		-		2,193		-		2,193
Deferred compensation(4)		2,320		-		-		2,320
Interest rate swaps(5)		-		2,682		-		2,682

_____________

(1) Money market funds are included within cash and cash equivalents. The remaining balance of cash and cash equivalents as of March 31, 2013 and December 31, 2012 was 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, net. See number (4) below for a discussion of the related deferred compensation liability.

(3) Foreign currency exchange contracts are included within other current assets; other long-term assets, net; 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 combinationis included within 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 number (2) above.

(5) Interest rate swaps are included within accrued 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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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2013

Accumulated Other Comprehensive Income [Abstract]

Schedule Of Accumulated Other Comprehensive Income

For the Three Months Ended March 31, 2013		Unrealized Loss on Investments, Net of Tax		Unrealized Gain (Loss) on Derivative Instruments, Net of Tax		Cumulative Translation Adjustment		Total
Balance as of December 31, 2012	$	(171)	$	(2,070)	$	18,195	$	15,954
Other comprehensive income (loss) before reclassifications		72		4,118		(8,447)		(4,257)
Gains reclassified from accumulated other comprehensive income		-		(10)		-		(10)
Balance as of March 31, 2013	$	(99)	$	2,038	$	9,748	$	11,687

Schedule of Reclassifications out of Accumulated Other Comprehensive Income

Details about Accumulated Other Comprehensive Income Components	Affected Line Item in the Statement Where Net Income is Presented	Amounts Reclassified from Accumulated Other Comprehensive Income For the Three Months Ended March 31,
		2013	2012
Gains (losses) on derivative instruments included in net income:
Foreign currency exchange contracts	Cost of revenue	109	1,486
Interest rate swaps	Interest expense	(107)	(350)
	Total gains before tax	2	1,136
	Tax (benefit) expense	(8)	341
	Gains, net of tax	10	795

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Share-Based Compensation (Policy)

3 Months Ended

Mar. 31, 2013

Share-Based Compensation [Abstract]

Share-Based Compensation Policy

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the 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 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 present intention to pay a dividend; therefore, we assume that no dividends will be paid over the expected terms of option awards.

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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities:
Net income	$ 44,867	$ 40,734
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,513	12,705
Loss on disposal of property and equipment	27	83
Increase in deferred compensation liability	114	176
Provision for uncollectible accounts	644	412
Provision for deferred income taxes	1,169	462
Share-based compensation expense	3,949	3,809
Tax benefit from share-based compensation arrangements	(5,310)	(4,518)
Changes in assets and liabilities:
Accounts receivable	(23,722)	(17,818)
Inventories	(8,472)	(8,687)
Other assets	6,301	(3,165)
Accounts payable	3,654	3,990
Accrued liabilities	(16,919)	(14,698)
Deferred revenue	869	1,699
Net cash provided by operating activities	20,684	15,184
Cash Flows from Investing Activities:
Purchases of property and equipment	(19,761)	(9,446)
Proceeds from disposition of pharmaceutical product lines	3,500	3,000
Proceeds from sale of property and equipment		2
Acquisitions of intangible assets	(659)	(900)
Net cash used by investing activities	(16,920)	(7,344)
Cash Flows from Financing Activities:
Borrowings on revolving credit facilities, net	48,000	11,000
Payment of notes payable	(238)	(224)
Repurchases of common stock	(63,778)	(27,630)
Proceeds from exercises of stock options and employee stock purchase plans	12,958	5,772
Tax benefit from share-based compensation arrangements	5,310	4,518
Net cash provided (used) by financing activities	2,252	(6,564)
Net effect of changes in exchange rates on cash	(1,638)	320
Net increase in cash and cash equivalents	4,378	1,596
Cash and cash equivalents at beginning of period	223,986	183,895
Cash and cash equivalents at end of period	$ 228,364	$ 185,491

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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, reserves	$ 3,053	$ 2,632
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	100,608,000	100,160,000
Deferred stock units, outstanding	119,000	119,000
Treasury stock, shares	46,381,000	45,652,000

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Income Taxes

3 Months Ended

Mar. 31, 2013

Income Taxes [Abstract]

Income Taxes

Note 10.      Income Taxes 

Our effective income tax rate was26.2% and 31.7% for the three months ended March 31, 2013 and 2012, respectively. During the quarter ended March 31, 2013, federal legislation was enacted within the U.S. that retroactively allowed a research and development (R&D) tax credit for all of 2012 and extended the R&D credit through the twelve months ending December 31, 2013.  Because this legislation was enacted in 2013, the full benefit of the credit related to the prior year’s activities was recognized during the three months ended March 31, 2013.  In the absence of the 2012 R&D credit, our effective tax rate for the three months ended March 31, 2013 would have been 30.6%, or 4.4% higher. The remaining decrease in our effective income tax rate was due to the impact of the U.S. R&D tax benefit related to research activities occurring during the three months ended March 31, 2013. 

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Document And Entity Information	3 Months Ended
	Mar. 31, 2013	Apr. 12, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Entity Registrant Name	IDEXX LABORATORIES INC /DE
Entity Central Index Key	0000874716
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		54,102,977

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Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2013

Accumulated Other Comprehensive Income [Abstract]

Accumulated Other Comprehensive Income

Note 11.    ACCUMULATED OTHER Comprehensive Income

The changes in accumulated other comprehensive income, net of tax, for the three months ended March 31, 2013 consisted of the following (in thousands): 

For the Three Months Ended March 31, 2013		Unrealized Loss on Investments, Net of Tax		Unrealized Gain (Loss) on Derivative Instruments, Net of Tax		Cumulative Translation Adjustment		Total
Balance as of December 31, 2012	$	(171)	$	(2,070)	$	18,195	$	15,954
Other comprehensive income (loss) before reclassifications		72		4,118		(8,447)		(4,257)
Gains reclassified from accumulated other comprehensive income		-		(10)		-		(10)
Balance as of March 31, 2013	$	(99)	$	2,038	$	9,748	$	11,687

The following is a summary of reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2013 and 2012 (in thousands):

Details about Accumulated Other Comprehensive Income Components	Affected Line Item in the Statement Where Net Income is Presented	Amounts Reclassified from Accumulated Other Comprehensive Income For the Three Months Ended March 31,
		2013	2012
Gains (losses) on derivative instruments included in net income:
Foreign currency exchange contracts	Cost of revenue	109	1,486
Interest rate swaps	Interest expense	(107)	(350)
	Total gains before tax	2	1,136
	Tax (benefit) expense	(8)	341
	Gains, net of tax	10	795

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Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue:
Product revenue	$ 205,768	$ 204,167
Service revenue	126,338	118,509
Total revenue	332,106	322,676
Cost of Revenue:
Cost of product revenue	74,150	75,212
Cost of service revenue	73,982	72,690
Total cost of revenue	148,132	147,902
Gross profit	183,974	174,774
Expenses:
Sales and marketing	59,397	57,632
General and administrative	41,631	36,178
Research and development	21,758	20,557
Income from operations	61,188	60,407
Interest expense	(835)	(1,193)
Interest income	444	436
Income before provision for income taxes	60,797	59,650
Provision for income taxes	15,930	18,916
Net income	44,867	40,734
Less: Net income (loss) attributable to noncontrolling interest	7	(9)
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 44,860	$ 40,743
Earnings per Share:
Basic	$ 0.82	$ 0.74
Diluted	$ 0.81	$ 0.72
Weighted Average Shares Outstanding:
Basic	54,588	55,208
Diluted	55,490	56,439

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Goodwill And Intangible Assets, Net

3 Months Ended

Mar. 31, 2013

Goodwill And Intangible Assets [Abstract]

Goodwill And Intangible Assets, Net

Note 5.       Goodwill and Intangible Assets, NET 

The decrease in goodwill during the three months ended March 31, 2013 resulted from changes in foreign currency exchange rates. The decrease in intangible assets other than goodwill during the three months ended March 31, 2013 resulted from the continued amortization of our intangible assets and changes in foreign currency exchange rates, partly offset by the impact of the acquisition of intangible assets.

We acquired a customer list in February 2013 for a purchase price of $1.0 million, which was allocated entirely to intangible assets other than goodwill. All assets acquired in connection with the acquisition were assigned to our Companion Animal Group (“CAG”) segment.

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Inventories

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Inventories

Note 4.      Inventories

Inventories include material, labor and overhead, and are stated at the lower of cost (first-in, first-out) or market. The components of inventories were as follows (in thousands):

	March 31,		December 31,
		2013		2012
Raw materials	$	26,653	$	26,986
Work-in-process		15,247		16,031
Finished goods		106,342		97,929
	$	148,242	$	140,946

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Derivative Instruments And Hedging

3 Months Ended

Mar. 31, 2013

Derivative Instruments And Hedging [Abstract]

Derivative Instruments And Hedging

Note 16.    Derivative Instruments and Hedging

Disclosure within this footnote is presented to provide transparency about how and why we use derivative 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 risks that we manage by using derivative instruments are foreign currency exchange risk and interest rate risk. 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 foreign currency exchange contracts to minimize the impact of foreign currency fluctuations associated with specific, significant transactions. We enter into interest rate swaps to minimize the impact of interest rate fluctuations associated with our variable-rate debt.

The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions. 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 large multinational financial institutions and we do not hold or engage in transactions involving derivative instruments for purposes other than risk management.

We recognize all derivative instruments, including our foreign currency exchange contracts and interest rate swap agreements, on the balance sheet at fair value at the balance sheet date. Derivative 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 hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions.  If a derivative instrument qualifies for hedge accounting, changes in the fair value of the derivative instrument from the effective portion of the hedge are deferred in other comprehensive income (“OCI”), 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 hedge instrument is not effective in achieving offsetting changes in fair value. We de-designate derivative 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 OCI 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 11 for further information regarding the effect of derivative instruments designated as cash flow hedges on the condensed consolidated statement of operations for the three months ended March 31, 2013 and 2012.

We enter into master netting arrangements with the counterparties to our derivative transactions which permit 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 accompanying condensed consolidated balance sheets on a gross basis. All cash flows related to our foreign currency exchange contracts and interest rate swaps 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 and variable-to-fixed interest rate swaps 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 and interest rates. 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 the three months ended March 31, 2013 or 2012. Gains or losses related to hedge ineffectiveness recognized in earnings during the three months ended March 31, 2013 and 2012were not material.  At March 31, 2013, the estimated amount of net gains that are expected to be reclassified out of accumulated OCI and into earnings within the next 12 months is $1.6 million if exchange and interest rates do not fluctuate from the levels at March 31, 2013.

We enter into foreign currency exchange contracts for amounts that are less than the full value of forecasted intercompany inventory purchases and sales. Our hedging strategy related to intercompany inventory purchases and sales is to employ the full amount of our hedges for the succeeding year at the conclusion of our budgeting process for that year, which is complete by the end of the preceding year. 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.

We have entered into forward fixed interest rate swap agreements to manage the economic effect of variable interest obligations on amounts borrowed under the terms of our Credit Facility. Beginning on March 30, 2012, the variable interest rate associated with $40 million of borrowings outstanding under the Credit Facility became effectively fixed at 1.36% plus the range of applicable interest rates (“Credit Spread”) through June 30, 2016. Beginning on March 28, 2013, the variable interest rate associated with an additional $40 million of borrowings outstanding under the Credit Facility became effectively fixed at 1.64% plus the Credit Spread through June 30, 2016. Two of our forward fixed interest rate swap agreements expired on March 31, 2012. Under these agreements, the variable interest rate associated with $80 million of borrowings outstanding under the Credit Facility had been effectively fixed at 2% plus the Credit Spread above the London interbank offered rate.

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 consisted of the following (in thousands):

Currency Sold	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Euro	$	54,660	$	57,720
British pound		26,570		28,520
Japanese yen		19,800		22,450
Canadian dollar		21,200		22,440
Australian dollar		12,500		13,050
	$	134,730	$	144,180

Currency Purchased	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Swiss franc	$	9,750	$	12,820

The notional amount of forward fixed interest rate swap agreements to manage variable interest obligations consisted of the following (in thousands):

	U.S. Dollar Equivalent
		March 31,		December 31,
		2013		2012
Interest rate swap commencing March 30, 2012 and expiring June 30, 2016	$	40,000	$	40,000
Interest rate swap commencing March 28, 2013 and expiring June 30, 2016	$	40,000	$	40,000

The fair values of derivative instruments and their respective classification on the condensed consolidated balance sheets consisted of the following (in thousands):

		Asset Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Other current assets	$	4,721	$	2,128
Foreign currency exchange contracts	Other long-term assets, net		620		-
Total derivative instruments		$	5,341	$	2,128

		Liability Derivatives
			March 31,		December 31,
			2013		2012
Derivatives designated as hedging instruments	Balance Sheet Classification
Foreign currency exchange contracts	Accrued liabilities	$	765	$	2,193
Foreign currency exchange contracts	Other long-term liabilities		13		-
Interest rate swaps	Accrued liabilities		2,606		2,682
Total derivative instruments		$	3,384	$	4,875

The effect of derivative instruments designated as cash flow hedges on the condensed consolidated balance sheets consisted of the following (in thousands):

	Gain (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)
	For the Three Months Ended March 31,
Derivative instruments		2013		2012
Foreign currency exchange contracts, net of tax	$	4,061	$	(1,811)
Interest rate swaps, net of tax		47		110
Total derivative instruments, net of tax	$	4,108	$	(1,701)

Recognized derivative instruments on the condensed consolidated balance sheets that are subject to master netting arrangements consisted of the following (in thousands):

As of March 31, 2013
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	5,341	$	-	$	5,341	$	778	$	4,563
Total derivative assets	$	5,341	$	-	$	5,341	$	778	$	4,563
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	778	$	-	$	778	$	778	$	-
Interest rate swaps		2,606		-		2,606		-		2,606
Total derivative liabilities	$	3,384	$	-	$	3,384	$	778	$	2,606

As of December 31, 2012
Description		Gross Amount of Recognized Assets		Gross Amounts Offset on Balance Sheet		Amount of Assets Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,128	$	-	$	2,128	$	1,918	$	210
Total derivative assets	$	2,128	$	-	$	2,128	$	1,918	$	210
Description		Gross Amount of Recognized Liabilities		Gross Amounts Offset on Balance Sheet		Amount of Liabilities Presented on Balance Sheet		Gross Amounts not Offset on Balance Sheet		Net Amount
Foreign currency exchange contracts	$	2,193	$	-	$	2,193	$	1,918	$	275
Interest rate swaps		2,682		-		2,682		-		2,682
Total derivative liabilities	$	4,875	$	-	$	4,875	$	1,918	$	2,957

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Earnings Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share

Note 12.    Earnings per Share

Basic earnings per share is computed by dividing net income attributable to IDEXX Laboratories, Inc. 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, the total unrecognized compensation expense for unvested share-based compensation awards and the excess tax benefits resulting from share-based compensation tax deductions in excess of the related expense recognized for financial reporting purposes, 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 4 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012 for additional information regarding deferred stock units.

The following is a reconciliation of shares outstanding for basic and diluted earnings per share for the three months ended March 31, 2013 and 2012 (in thousands):

	For the Three Months Ended March 31,
	2013	2012
Shares outstanding for basic earnings per share:	54,588	55,208
Shares outstanding for diluted earnings per share:
Shares outstanding for basic earnings per share	54,588	55,208
Dilutive effect of share-based payment awards	902	1,231
	55,490	56,439

Certain options to acquire shares and restricted stock units 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 options and restricted stock unitsfor the three months ended March 31, 2013 and 2012 (in thousands):

	For the Three Months Ended March 31,
	2013	2012
Weighted average number of shares underlying anti-dilutive options	441	618
Weighted average number of shares underlying anti-dilutive restricted stock units	0	50

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Warranty Reserves

3 Months Ended

Mar. 31, 2013

Warranty Reserves [Abstract]

Warranty Reserves

NOTE 8.      WARRANTY RESERVES

We provide a standard twelve month warranty on all instruments sold. We recognize the cost of instrument warranties in cost of product revenue at the time revenue is recognized based on the estimated cost to repair the instrument over its warranty period. Cost of product revenue reflects not only estimated warranty expense for instruments sold in the current period, but also any changes in estimated warranty expense for the portion of the aggregate installed base that is under warranty. Estimated warranty expense is based on a variety of inputs, including historical instrument performance in the customers’ environment, historical costs incurred in servicing instruments and projected instrument reliability. Should actual service rates or costs differ from our estimates, revisions to the estimated warranty liability would be required. The liability for warranties is included in accrued liabilities in the accompanying condensed consolidated balance sheets.

The following is a summary of changes in accrued warranty reserves for the three months endedMarch 31, 2013 and 2012(in thousands):  

	For the Three Months Ended March 31,
		2013		2012
Balance, beginning of period	$	1,583	$	1,693
Provision for warranty expense		321		561
Change in estimate, balance beginning of period		(132)		(60)
Settlement of warranty liability		(428)		(621)
Balance, end of period	$	1,344	$	1,573

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Derivative Instruments And Hedging (Schedule Of Fair Values And Balance Sheet Classifications Of Derivatives Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	$ 5,341	$ 2,128
Total derivative instruments, fair value of liabilities	3,384	4,875
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	3,384	4,875
Foreign Currency Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	5,341	2,128
Total derivative instruments, fair value of liabilities	778	2,193
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	4,721	2,128
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Long-Term Assets Net [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of assets	620
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Accrued Liabilties [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	765	2,193
Foreign Currency Exchange Contracts [Member] | Derivatives Designated As Hedging Instruments [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	13
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	2,606	2,682
Interest Rate Swaps [Member] | Derivatives Designated As Hedging Instruments [Member] | Accrued Liabilties [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, fair value of liabilities	$ 2,606	$ 2,682

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Other Noncurrent Assets

3 Months Ended

Mar. 31, 2013

Other Noncurrent Assets [Abstract]

Other Noncurrent Assets

NOTE 6.      Other NONCURRENT ASSETS

Other noncurrent assets consisted of the following (in thousands):  

	March 31,		December 31,
		2013		2012
Investment in long-term product supply arrangements	$	10,079	$	10,324
Customer acquisition costs, net		21,187		21,795
Other assets		19,740		18,942
	$	51,006	$	51,061

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Accrued Liabilities

3 Months Ended

Mar. 31, 2013

Accrued Liabilities [Abstract]

Accrued Liabilities

Note 7.      Accrued liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31,		December 31,
	2013		2012
Accrued expenses	$	44,144	$	43,026
Accrued employee compensation and related expenses		39,078		53,408
Accrued taxes		10,173		14,945
Accrued customer programs		25,075		26,367
	$	118,470	$	137,746

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Repurchases Of Common Stock

3 Months Ended

Mar. 31, 2013

Repurchases Of Common Stock [Abstract]

Repurchases Of Common Stock

Note 9.      Repurchases of common STOCK

The following is a summary of our open market common stock repurchases for the three months ended March 31, 2013 and 2012(in thousands, except per share amounts):

	For the Three Months Ended March 31,
	2013		2012
Shares repurchased		687		333
Total cost of shares repurchased	$	63,778	$	27,630
Average cost per share	$	92.82	$	82.85

We primarily acquire shares by means of repurchases in the open market. However, we also acquire shares that are surrendered by employees in payment for the minimum required withholding taxes due on the vesting of restricted stock units and the settlement of deferred stock units. We acquired 45,181 shares having a total cost of $4.1million in connection with such employee surrenders during the three months ended March 31, 2013 compared to 48,574 shares having a total cost of $4.2 million during the three months ended March 31, 2012.

Weissue 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 both the three months ended March 31, 2013 and 2012 was not material.

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Warranty Reserves (Tables)

3 Months Ended

Mar. 31, 2013

Warranty Reserves [Abstract]

Summary Of Changes In Accrued Warranty Reserves

	For the Three Months Ended March 31,
		2013		2012
Balance, beginning of period	$	1,583	$	1,693
Provision for warranty expense		321		561
Change in estimate, balance beginning of period		(132)		(60)
Settlement of warranty liability		(428)		(621)
Balance, end of period	$	1,344	$	1,573

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Accumulated Other Comprehensive Income (Schedule of Reclassifications out of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (10)
Provision for income taxes	15,930	18,916
Reclassifications out of Accumulated Other Comprehensive Income [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	2	1,136
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	10	795
Provision for income taxes	(8)	341
Interest Rate Swaps [Member] | Reclassifications out of Accumulated Other Comprehensive Income [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(107)	(350)
Foreign Currency Exchange Contracts [Member] | Reclassifications out of Accumulated Other Comprehensive Income [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	$ 109	$ 1,486

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Segment Reporting

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Segment Reporting

Note 14.     Segment Reporting

Prior to January 1, 2013, we operated primarily through three business segments: diagnostic and information technology-based products and services for the veterinary market, which we continue to refer to as CAG, water quality products (“Water”) and diagnostic products for livestock and poultry health, which we referred to as Livestock and Poultry Diagnostics. We also operated two smaller operating segments that comprised products for milk quality and safety (“Dairy”) and products for the human point-of-care medical diagnostics market (“OPTI Medical”). Financial information about our Dairy and OPTI Medical operating segments was combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they did not meet the quantitative or qualitative thresholds for reportable segments.

We have combined the management of our Livestock and Poultry Diagnostics, and Dairy lines of business to more effectively realize the market synergies between the product lines and to achieve operational efficiencies. We refer to this newly created segment as Livestock, Poultry and Dairy (“LPD”). Our OPTI Medical operating segment remains combined and presented with our remaining pharmaceutical product line and our out-licensing arrangements in an “Other” category because they do not meet the quantitative or qualitative thresholds for reportable segments.  The segment income (loss) from operations discussed within this report for the three months ended March 31, 2012 has been retrospectively revised to reflect this change in the composition of our reportable segments.

The following is a summary of segment performance for the three months ended March 31, 2013 and 2012(in thousands):

	For the Three Months Ended March 31,
	CAG		Water		LPD		Other		Unallocated Amounts		Consolidated Total
2013
Revenue	$	276,941	$	20,666	$	28,039	$	6,460	$	-	$	332,106
Income (loss) from operations	$	51,309	$	8,355	$	4,836	$	435	$	(3,747)	$	61,188
Interest expense, net												(391)
Income before provision for income taxes												60,797
Provision for income taxes												15,930
Net income												44,867
Less: Net income attributable to noncontrolling interest												7
Net income attributable to IDEXX Laboratories, Inc. stockholders											$	44,860
2012
Revenue	$	268,073	$	19,582	$	29,116	$	5,905	$	-	$	322,676
Income (loss) from operations	$	46,918	$	8,295	$	6,017	$	(213)	$	(610)	$	60,407
Interest expense, net												(757)
Income before provision for income taxes												59,650
Provision for income taxes												18,916
Net income												40,734
Less: Net loss attributable to noncontrolling interest												(9)
Net income attributable to IDEXX Laboratories, Inc. stockholders											$	40,743

The following is a summary of revenue by product and service category for the three months ended March 31, 2013 and 2012  (in thousands):

	For the Three Months Ended March 31,
		2013		2012
CAG segment revenue:
VetLab® instruments and consumables	$	103,671	$	101,997
Rapid assay products		44,083		43,664
Reference laboratory diagnostic and consulting services		107,649		101,862
Practice management and digital imaging systems and services		21,538		20,550
CAG segment revenue		276,941		268,073
Water segment revenue		20,666		19,582
LPD segment revenue		28,039		29,116
Other segment revenue		6,460		5,905
Total revenue	$	332,106	$	322,676

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Warranty Reserves (Policy)

3 Months Ended

Mar. 31, 2013

Warranty Reserves [Abstract]

Warranty Reserves Policy

We provide a standard twelve month warranty on all instruments sold. We recognize the cost of instrument warranties in cost of product revenue at the time revenue is recognized based on the estimated cost to repair the instrument over its warranty period. Cost of product revenue reflects not only estimated warranty expense for instruments sold in the current period, but also any changes in estimated warranty expense for the portion of the aggregate installed base that is under warranty. Estimated warranty expense is based on a variety of inputs, including historical instrument performance in the customers’ environment, historical costs incurred in servicing instruments and projected instrument reliability. Should actual service rates or costs differ from our estimates, revisions to the estimated warranty liability would be required. The liability for warranties is included in accrued liabilities in the accompanying condensed consolidated balance sheets.

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Income Taxes (Summary Of Effective Income Tax Rates) (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Abstract]
Effective income tax rate	26.20%	31.70%
Effective income tax rate in absence of 2012 R&D tax credit	30.60%
Impact of 2012 R&D tax credit on effective income tax rate	4.40%

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Share-Based Compensation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-Based Compensation [Abstract]
Fair value of share-based compensation awards, granted	$ 16.6	$ 15.7
Unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding	$ 42.4
Weighted average recognition period for unrecognized compensation expense, in years	2 years 3 months 20 days

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Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 44,867	$ 40,734
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(8,447)	5,628
Unrealized gain on investments, net of tax expense of $42 in 2013 and $65 in 2012	72	111
Unrealized gain (loss) on derivative instruments:
Unrealized gain (loss), net of tax expense (benefit) of $1,699 in 2013 and ($434) in 2012	4,118	(906)
Less: reclassification adjustment for gains included in net income, net of tax benefit (expense) of $8 in 2013 and ($341) in 2012	(10)	(795)
Unrealized gain (loss) on derivative instruments	4,108	(1,701)
Other comprehensive (loss) income, net of tax	(4,267)	4,038
Comprehensive income	40,600	44,772
Less: comprehensive income (loss) attributable to noncontrolling interest	7	(9)
Comprehensive income attributable to IDEXX Laboratories, Inc.	$ 40,593	$ 44,781

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Share-Based Compensation

3 Months Ended

Mar. 31, 2013

Share-Based Compensation [Abstract]

Share-Based Compensation

NOTE 3.      SHARE-BASED COMPENSATION

The fair value of options, restricted stock units, deferred stock units and employee stock purchase rights awarded during the three months ended March 31, 2013 and 2012 totaled$16.6 million and $15.7 million, respectively. The total unrecognized compensation expense, net of estimated forfeitures, for unvested share-based compensation awards outstanding at March 31, 2013 was $42.4 million, which will be recognized over a weighted average period of approximately 2.3 years.

We determine the assumptions used in the valuation of option awards as of the date of grant. Differences in the 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 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 present intention to pay a dividend; 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 Three Months Ended March 31,
		2013			2012
Expected stock price volatility		33	%		34	%
Expected term, in years		4.6			4.6
Risk-free interest rate		0.9	%		0.8	%
Weighted average fair value of options granted	$	26.58		$	26.36

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Derivative Instruments And Hedging (Schedule Of Notional Amounts Of Foreign Currency Exchange Contracts And Interest Rate Swap Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Currency Sold	$ 134,730	$ 144,180
Euro [Member]
Derivative [Line Items]
Currency Sold	54,660	57,720
British Pound [Member]
Derivative [Line Items]
Currency Sold	26,570	28,520
Canadian Dollar [Member]
Derivative [Line Items]
Currency Sold	21,200	22,440
Australian Dollar [Member]
Derivative [Line Items]
Currency Sold	12,500	13,050
Japanese Yen [Member]
Derivative [Line Items]
Currency Sold	19,800	22,450
Swiss Franc [Member]
Derivative [Line Items]
Currency Purchased	$ 9,750	$ 12,820

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Earnings Per Share (Policy)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share Policy

Basic earnings per share is computed by dividing net income attributable to IDEXX Laboratories, Inc. 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, the total unrecognized compensation expense for unvested share-based compensation awards and the excess tax benefits resulting from share-based compensation tax deductions in excess of the related expense recognized for financial reporting purposes, 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.

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Summary Of Revenue By Product And Service Category

	For the Three Months Ended March 31,
		2013		2012
CAG segment revenue:
VetLab® instruments and consumables	$	103,671	$	101,997
Rapid assay products		44,083		43,664
Reference laboratory diagnostic and consulting services		107,649		101,862
Practice management and digital imaging systems and services		21,538		20,550
CAG segment revenue		276,941		268,073
Water segment revenue		20,666		19,582
LPD segment revenue		28,039		29,116
Other segment revenue		6,460		5,905
Total revenue	$	332,106	$	322,676

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Commitments, Contingencies And Guarantees

3 Months Ended

Mar. 31, 2013

Commitments, Contingencies And Guarantees [Abstract]

Commitments, Contingencies And Guarantees

Note 13.    Commitments, Contingencies and Guarantees

Significant commitments, contingencies and guarantees at March 31, 2013 are consistent with those discussed in Note 14 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2012.