Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents disaggregated revenue by major product and service categories for the three months ended March 31, 2019 and 2018 (in thousands):໿

	For the Three Months Ended March 31,
	2019		2018
CAG segment revenue:
CAG Diagnostics recurring revenue:	$	443,791	$	406,048
IDEXX VetLab consumables	167,211		149,513
Rapid assay products	54,431		52,017
Reference laboratory diagnostic and consulting services	202,658		186,937
CAG Diagnostics service and accessories	19,491		17,581
CAG Diagnostics capital - instruments	28,749		30,895
Veterinary software, services and diagnostic imaging systems	36,378		33,890
CAG segment revenue	508,918		470,833
Water segment revenue	30,310		29,143
LPD segment revenue	31,506		32,240
Other segment revenue	5,322		5,440
Total revenue	$	576,056	$	537,656

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

	For the Three Months Ended March 31,
	2019		2018
United States	$	358,288	$	327,461
Europe, the Middle East and Africa	121,746		120,574
Asia Pacific Region	60,075		56,039
Canada	23,224		22,544
Latin America	12,723		11,038
Total	$	576,056	$	537,656