Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Aug. 01, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Registrant Name	ICAD INC
Entity Central Index Key	0000749660
Entity Filer Category	Accelerated Filer
Entity Tax Identification Number	02-0377419
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		22,900,592
Entity Address, State or Province	NH
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-09341
Entity Incorporation, State or Country Code	DE
Entity Address, City or Town	Nashua
Entity Address, Address Line One	98 Spit Brook Road, Suite 100
Entity Address, Postal Zip Code	03062
City Area Code	603
Trading Symbol	ICAD
Local Phone Number	882-5200
Security Exchange Name	NASDAQ
Title of 12(b) Security	Common Stock