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Document and Entity Information
Aug. 13, 2019
Cover [Abstract]  
Entity Registrant Name AtriCure, Inc.
Amendment Flag false
Entity Central Index Key 0001323885
Document Type 8-K
Document Period End Date Aug. 13, 2019
Entity Incorporation State Country Code DE
Entity File Number 000-51470
Entity Tax Identification Number 34-1940305
Entity Address, Address Line One 7555 Innovation Way
Entity Address, City or Town Mason
Entity Address, State or Province OH
Entity Address, Postal Zip Code 45040
City Area Code (513)
Local Phone Number 755-4100
Security 12b Title Common Stock, $.001 par value
Trading Symbol ATRC
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false