Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 181,499	$ 156,915
Accounts receivable, net of reserves of $3,202 in 2011 and $2,828 in 2010	134,923	120,080
Inventories	137,143	127,885
Deferred income tax assets	27,253	26,203
Other current assets	29,934	29,508
Total current assets	510,752	460,591
Long-Term Assets:
Property and equipment, net	213,868	201,725
Goodwill	150,018	149,112
Intangible assets, net	50,607	55,752
Other long-term assets, net	43,954	29,964
Total long-term assets	458,447	436,553
TOTAL ASSETS	969,199	897,144
Current Liabilities:
Accounts payable	31,032	22,669
Accrued liabilities	136,799	118,598
Line of credit	154,000	128,999
Current portion of long-term debt	903	863
Current portion of deferred revenue	13,635	13,983
Total current liabilities	336,369	285,112
Long-Term Liabilities:
Deferred income tax liabilities	20,746	18,661
Long-term debt, net of current portion	2,735	3,418
Long-term deferred revenue, net of current portion	8,102	4,627
Other long-term liabilities	15,279	11,045
Total long-term liabilities	46,862	37,751
Total liabilities	383,231	322,863
Commitments and Contingencies (Note 14)
Stockholders' Equity:
Common stock, $0.10 par value: Authorized: 120,000 shares; Issued: 99,095 and 97,968 shares in 2011 and 2010, respectively	9,910	9,797
Additional paid-in capital	694,201	641,645
Deferred stock units: Outstanding: 119 and 118 units in 2011 and 2010, respectively	4,654	4,433
Retained earnings	1,089,316	965,540
Accumulated other comprehensive income	18,709	13,467
Treasury stock, at cost: 42,892 and 40,657 shares in 2011 and 2010, respectively	(1,230,848)	(1,060,647)
Total IDEXX Laboratories, Inc. stockholders' equity	585,942	574,235
Noncontrolling interest	26	46
Total stockholders' equity	585,968	574,281
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 969,199	$ 897,144