Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-11929
Entity Registrant Name	Dover Motorsports, Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0357525
Entity Address, Address Line One	1131 North DuPont Highway
Entity Address, City or Town	Dover
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19901
City Area Code	302
Local Phone Number	883-6500
Title of 12(b) Security	Common Stock, $.10 Par Value
Trading Symbol	DVD
Security Exchange Name	NYSE
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Central Index Key	0001017673
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Common Stock | Common Stock
Entity Common Stock, Shares Outstanding		17,913,616
Common Stock | Common Class A
Entity Common Stock, Shares Outstanding		18,509,975