Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 264,811	$ 223,986
Accounts receivable, net of reserves of $3,324 in 2013 and $2,632 in 2012	151,568	138,324
Inventories	145,987	140,946
Deferred income tax assets	27,304	27,714
Other current assets	35,553	38,567
Total current assets	625,223	569,537
Long-Term Assets:
Property and equipment, net	274,158	245,177
Goodwill	180,988	174,994
Intangible assets, net	61,387	62,833
Other long-term assets, net	53,482	51,061
Total long-term assets	570,015	534,065
TOTAL ASSETS	1,195,238	1,103,602
Current Liabilities:
Accounts payable	38,131	35,288
Accrued liabilities	134,161	137,746
Line of credit	397,200	212,000
Current portion of long-term debt	1,019	1,107
Current portion of deferred revenue	22,441	20,192
Total current liabilities	592,952	406,333
Long-Term Liabilities:
Deferred income tax liabilities	22,863	23,028
Long-term debt, net of current portion	624	1,394
Long-term deferred revenue, net of current portion	15,129	12,692
Other long-term liabilities	28,775	23,898
Total long-term liabilities	67,391	61,012
Total liabilities	660,343	467,345
Commitments and Contingencies (Note 15)
Stockholders' Equity:
Common stock, $0.10 par value per share: Authorized: 120,000 shares; Issued: 100,805 and 100,160 shares in 2013 and 2012, respectively	10,081	10,016
Additional paid-in capital	798,332	757,214
Deferred stock units: Outstanding: 122 and 119 units in 2013 and 2012, respectively	5,055	4,630
Retained earnings	1,450,135	1,305,593
Accumulated other comprehensive income	15,562	15,954
Treasury stock, at cost: 48,835 and 45,652 shares in 2013 and 2012, respectively	(1,744,319)	(1,457,184)
Total IDEXX Laboratories, Inc. stockholders' equity	534,846	636,223
Noncontrolling interest	49	34
Total stockholders' equity	534,895	636,257
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,195,238	$ 1,103,602