CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue:
Total revenue	$ 721,789	$ 605,303	$ 1,985,717	$ 1,801,462
Cost of Revenue:
Total cost of revenue	299,183	260,353	824,179	767,062
Gross profit	422,606	344,950	1,161,538	1,034,400
Expenses:
Sales and marketing	108,202	104,551	318,526	312,499
General and administrative	105,031	66,337	231,111	186,653
Research and development	37,517	34,260	102,472	98,033
Income from operations	171,856	139,802	509,429	437,215
Interest expense	(8,110)	(7,090)	(25,297)	(23,662)
Interest income	208	86	417	159
Income before provision for income taxes	163,954	132,798	484,549	413,712
Provision for income taxes	17,633	23,960	77,376	76,464
Net income	146,321	108,838	407,173	337,248
Less: Net income attributable to noncontrolling interest	102	1	187	24
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 146,219	$ 108,837	$ 406,986	$ 337,224
Earnings per Share:
Basic (in dollars per share)	$ 1.71	$ 1.26	$ 4.77	$ 3.91
Diluted (in dollars per share)	$ 1.69	$ 1.24	$ 4.70	$ 3.85
Weighted Average Shares Outstanding:
Basic (in shares)	85,314	86,198	85,293	86,206
Diluted (in shares)	86,690	87,667	86,635	87,633
Product revenue
Revenue:
Total revenue	$ 422,283	$ 360,000	$ 1,153,114	$ 1,059,696
Cost of Revenue:
Total cost of revenue	146,804	125,112	396,282	370,388
Service revenue
Revenue:
Total revenue	299,506	245,303	832,603	741,766
Cost of Revenue:
Total cost of revenue	$ 152,379	$ 135,241	$ 427,897	$ 396,674