Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

The following table presents disaggregated revenue by major product and service categories for the three and six months ended June 30, 2018 (in thousands):

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	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2018		2017		2018		2017
CAG segment revenue:
CAG Diagnostics recurring revenue:	$	437,666	$	380,319	$	843,714	$	726,999
IDEXX VetLab consumables	158,620		132,094		308,133		255,647
Rapid assay products	63,362		60,266		115,379		108,161
Reference laboratory diagnostic and consulting services	197,268		171,298		384,205		330,367
CAG Diagnostics service and accessories	18,416		16,661		35,997		32,824
CAG Diagnostics capital - instruments	34,544		27,716		65,439		53,899
Veterinary software, services and diagnostic imaging systems	35,277		31,913		69,167		62,277
CAG segment revenue	507,487		439,948		978,320		843,175

Water segment revenue	32,658		29,424		61,801		54,501
LPD segment revenue	34,998		33,553		67,238		62,870
Other segment revenue	5,609		6,015		11,049		10,415
Total revenue	$	580,752	$	508,940	$	1,118,408	$	970,961

Revenue by principal geographic area, based on customers’ domiciles, was as follows (in thousands):

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	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2018		2017		2018		2017
United States	$	356,736	$	315,695	$	684,197	$	604,308
Europe, the Middle East and Africa	122,270		102,482		242,844		198,910
Asia Pacific Region	62,505		56,085		118,544		105,037
Canada	26,407		23,078		48,951		41,826
Latin America	12,834		11,600		23,872		20,880
Total	$	580,752	$	508,940	$	1,118,408	$	970,961