Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 12, 2021
Document Information [Line Items]
Entity Central Index Key	0000803578
Entity Registrant Name	INFORMATION ANALYSIS INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	000-22405
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	54-1167364
Entity Address, Address Line One	12015 Lee Jackson Memorial Highway
Entity Address, City or Town	Fairfax
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22033
City Area Code	703
Local Phone Number	383-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,045,690