Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue:
Product revenue	$ 191,334	$ 173,297	$ 583,221	$ 529,871
Service revenue	109,620	96,331	328,267	289,764
Total revenue	300,954	269,628	911,488	819,635
Cost of Revenue:
Cost of product revenue	76,831	67,076	227,993	207,773
Cost of service revenue	65,456	60,345	195,870	178,010
Total cost of revenue	142,287	127,421	423,863	385,783
Gross profit	158,667	142,207	487,625	433,852
Expenses:
Sales and marketing	50,682	44,486	152,641	133,069
General and administrative	32,483	30,704	98,219	96,588
Research and development	19,406	17,203	55,839	51,118
Income from operations	56,096	49,814	180,926	153,077
Interest expense	(928)	(687)	(2,438)	(1,741)
Interest income	450	136	1,238	327
Income before provision for income taxes	55,618	49,263	179,726	151,663
Provision for income taxes	17,122	14,548	55,970	46,723
Net income	38,496	34,715	123,756	104,940
Less: Net (loss) income attributable to noncontrolling interest	(11)	21	(20)	27
Net income attributable to IDEXX Laboratories, Inc. stockholders	$ 38,507	$ 34,694	$ 123,776	$ 104,913
Earnings per Share:
Basic	$ 0.68	$ 0.60	$ 2.17	$ 1.82
Diluted	$ 0.66	$ 0.59	$ 2.11	$ 1.76
Weighted Average Shares Outstanding:
Basic	56,699	57,620	57,141	57,799
Diluted	58,007	59,276	58,636	59,691