CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue:
Total revenue	$ 576,056	$ 537,656
Cost of Revenue:
Cost of service revenue	244,459	234,557
Gross profit	331,597	303,099
Expenses:
Sales and marketing	106,584	100,101
General and administrative	60,361	60,931
Research and development	31,514	29,023
Income from operations	133,138	113,044
Interest expense	(8,386)	(9,274)
Interest income	40	579
Income before provision for income taxes	124,792	104,349
Provision for income taxes	22,083	14,873
Net income	102,709	89,476
Less: Net income attributable to noncontrolling interest	28	25
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 102,681	$ 89,451
Earnings per Share:
Basic (in dollars per share)	$ 1.19	$ 1.02
Diluted (in dollars per share)	$ 1.17	$ 1.01
Weighted Average Shares Outstanding:
Basic (in shares)	86,204	87,331
Diluted (in shares)	87,549	88,944
Product revenue
Revenue:
Total revenue	$ 334,058	$ 317,440
Cost of Revenue:
Cost of service revenue	117,383	118,246
Service revenue
Revenue:
Total revenue	241,998	220,216
Cost of Revenue:
Cost of service revenue	$ 127,076	$ 116,311