Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 04, 2020
Cover [Abstract]
Entity Registrant Name	NOBLE ROMANS INC
Entity Central Index Key	0000709005
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	IN
Entity File Number	0-11104
Entity Common Stock, Shares Outstanding		22,215,512
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2020