CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue:
Total revenue	$ 620,103	$ 580,752	$ 1,196,159	$ 1,118,408
Cost of Revenue:
Cost of service revenue	262,250	248,313	506,709	482,870
Gross profit	357,853	332,439	689,450	635,538
Expenses:
Sales and marketing	101,364	96,255	207,948	196,356
General and administrative	59,955	61,080	120,316	122,011
Research and development	32,259	29,510	63,773	58,533
Income from operations	164,275	145,594	297,413	258,638
Interest expense	(8,186)	(8,457)	(16,572)	(17,731)
Interest income	33	172	73	751
Income before provision for income taxes	156,122	137,309	280,914	241,658
Provision for income taxes	30,421	28,629	52,504	43,502
Net income	125,701	108,680	228,410	198,156
Less: Net income attributable to noncontrolling interest	(5)	(11)	23	14
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 125,706	$ 108,691	$ 228,387	$ 198,142
Earnings per Share:
Basic (in dollars per share)	$ 1.46	$ 1.25	$ 2.65	$ 2.27
Diluted (in dollars per share)	$ 1.43	$ 1.23	$ 2.61	$ 2.23
Weighted Average Shares Outstanding:
Basic (in shares)	86,215	87,004	86,210	87,166
Diluted (in shares)	87,615	88,596	87,594	88,786
Product revenue
Revenue:
Total revenue	$ 365,638	$ 348,621	$ 699,696	$ 666,061
Cost of Revenue:
Cost of service revenue	127,893	127,270	245,276	245,516
Service revenue
Revenue:
Total revenue	254,465	232,131	496,463	452,347
Cost of Revenue:
Cost of service revenue	$ 134,357	$ 121,043	$ 261,433	$ 237,354