Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 221,441	$ 183,895
Accounts receivable, net of reserves of $3,618 in 2012 and $3,239 in 2011	141,374	141,275
Inventories	147,474	133,099
Deferred income tax assets	25,430	25,637
Other current assets	35,055	40,321
Total current assets	570,774	524,227
Long-Term Assets:
Property and equipment, net	231,639	216,777
Goodwill	174,614	172,610
Intangible assets, net	63,363	69,209
Other long-term assets, net	52,961	47,991
Total long-term assets	522,577	506,587
TOTAL ASSETS	1,093,351	1,030,814
Current Liabilities:
Accounts payable	31,728	36,551
Accrued liabilities	134,664	141,383
Line of credit	232,000	243,000
Current portion of long-term debt	960	917
Current portion of deferred revenue	16,494	15,028
Total current liabilities	415,846	436,879
Long-Term Liabilities:
Deferred income tax liabilities	20,650	23,288
Long-term debt, net of current portion	1,776	2,501
Long-term deferred revenue, net of current portion	14,656	10,823
Other long-term liabilities	22,888	17,730
Total long-term liabilities	59,970	54,342
Total liabilities	475,816	491,221
Commitments and Contingencies (Note 13)
Stockholders' Equity:
Common stock, $0.10 par value per share: Authorized: 120,000 shares; Issued: 99,914 and 99,229 shares in 2012 and 2011, respectively	9,991	9,923
Additional paid-in capital	742,022	702,575
Deferred stock units: Outstanding: 119 units in 2012 and 2011	4,616	4,688
Retained earnings	1,262,239	1,127,326
Accumulated other comprehensive income	14,579	15,443
Treasury stock, at cost: 45,215 and 44,128 shares in 2012 and 2011, respectively	(1,415,940)	(1,320,376)
Total IDEXX Laboratories, Inc. stockholders' equity	617,507	539,579
Noncontrolling interest	28	14
Total stockholders' equity	617,535	539,593
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,093,351	$ 1,030,814