Segment Reporting (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2011

Sep. 30, 2011

Segment Reporting [Abstract]

Schedule Of Segment Performance

	For the Three Months Ended September 30,
	CAG		Water		LPD		Other		Unallocated Amounts			Consolidated Total
2011
Revenue	$	248,074	$	21,648	$	20,675	$	10,557	$	-		$	300,954
Income (loss) from operations	$	44,296	$	9,979	$	3,648	$	34	$	(1,861	)	$	56,096
Interest expense, net													(478	)
Income before provision for income taxes													55,618
Provision for income taxes													17,122
Net income													38,496
Net loss attributable to noncontrolling interest													(11	)
Net income attributable to IDEXX  Laboratories, Inc. stockholders												$	38,507
2010
Revenue	$	222,909	$	20,044	$	17,476	$	9,199	$	-		$	269,628
Income (loss) from operations	$	40,535	$	8,566	$	3,320	$	869	$	(3,476	)	$	49,814
Interest expense, net													(551	)
Income before provision for income taxes													49,263
Provision for income taxes													14,548
Net income													34,715
Net income attributable to noncontrolling interest													21
Net income attributable to IDEXX  Laboratories, Inc. stockholders												$	34,694

	For the Nine Months Ended September 30,
	CAG		Water		LPD		Other			Unallocated Amounts			Consolidated Total
2011
Revenue	$	748,397	$	62,123	$	69,981	$	30,987		$	-		$	911,488
Income (loss) from operations	$	145,137	$	25,327	$	17,974	$	(207	)	$	(7,305	)	$	180,926
Interest expense, net														(1,200	)
Income before provision for income taxes														179,726
Provision for income taxes														55,970
Net income														123,756
Net loss attributable to noncontrolling interest														(20	)
Net income attributable to IDEXX  Laboratories, Inc. stockholders													$	123,776
2010
Revenue	$	676,646	$	57,356	$	56,577	$	29,056		$	-		$	819,635
Income (loss) from operations	$	128,497	$	24,228	$	12,447	$	2,057		$	(14,152	)	$	153,077
Interest expense, net														(1,414	)
Income before provision for income taxes														151,663
Provision for income taxes														46,723
Net income														104,940
Net income attributable to noncontrolling interest														27
Net income attributable to IDEXX  Laboratories, Inc. stockholders													$	104,913

Schedule Of Revenue By Product And Service Category

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		2011		2010		2011		2010
CAG segment revenue:
Instruments and consumables	$	99,719	$	88,481	$	292,209	$	258,318
Rapid assay products		36,073		35,576		118,883		115,500
Reference laboratory diagnostic and consulting services		94,027		82,534		282,242		248,422
Practice management systems and digital radiography		18,255		16,318		55,063		54,406
CAG segment revenue		248,074		222,909		748,397		676,646
Water segment revenue		21,648		20,044		62,123		57,356
LPD segment revenue		20,675		17,476		69,981		56,577
Other segment revenue		10,557		9,199		30,987		29,056
Total revenue	$	300,954	$	269,628	$	911,488	$	819,635