Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 02, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0001158895
Entity Registrant Name	LEMAITRE VASCULAR INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-33092
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2825458
Entity Address, Address Line One	63 Second Avenue
Entity Address, City or Town	Burlington
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01803
City Area Code	781
Local Phone Number	221-2266
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	LMAT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 729,212,310
Entity Common Stock, Shares Outstanding		21,928,942
Auditor Name	GRANT THORNTON LLP
Auditor Location	Boston, Massachusetts
Auditor Firm ID	248
ICFR Auditor Attestation Flag	true