Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Total revenue	$ 2,406,908	$ 2,213,242	$ 1,969,058
Cost of Revenue:
Total cost of revenue	1,041,359	971,700	871,676
Gross profit	1,365,549	1,241,542	1,097,382
Expenses:
Sales and marketing	418,193	387,406	354,294
General and administrative	261,317	244,938	220,878
Research and development	133,193	117,863	109,182
Income from operations	552,846	491,335	413,028
Interest expense	(31,055)	(34,744)	(37,225)
Interest income	427	1,151	5,254
Income before provision for income taxes	522,218	457,742	381,057
Provision for income taxes	94,426	80,695	117,788
Net income	427,792	377,047	263,269
Less: Net income attributable to noncontrolling interest	72	16	125
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 427,720	$ 377,031	$ 263,144
Earnings per Share:
Basic (in USD per share)	$ 4.97	$ 4.34	$ 3.00
Diluted (in USD per share)	$ 4.89	$ 4.26	$ 2.94
Weighted Average Shares Outstanding:
Basic (in shares)	86,115	86,864	87,769
Diluted (in shares)	87,542	88,470	89,567
Product revenue
Revenue:
Total revenue	$ 1,423,144	$ 1,322,683	$ 1,176,115
Cost of Revenue:
Total cost of revenue	506,202	494,889	446,449
Service revenue
Revenue:
Total revenue	983,764	890,559	792,943
Cost of Revenue:
Total cost of revenue	$ 535,157	$ 476,811	$ 425,227