Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 03, 2022	Jun. 30, 2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity File Number	1-33741
Entity Registrant Name	DallasNews CORPORATION
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	38-3765318
Entity Address, Address Line One	P. O. Box 224866
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75222-4866
City Area Code	214
Local Phone Number	977-7342
Title of 12(b) Security	Series A Common Stock, $0.01 par value
Trading Symbol	DALN
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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 Public Float			$ 33,680,672
Entity Central Index Key	0001413898
Amendment Flag	false
Documents Incorporated by Reference	Selected designated portions of the registrant’s definitive proxy statement, relating to the Annual Meeting of Shareholders to be held on May 12, 2022, are incorporated by reference into Parts II and III of this Annual Report.
Auditor Firm ID	248
Auditor Name	GRANT THORNTON LLP
Auditor Location	Dallas, Texas
Series A [Member]
Entity Common Stock, Shares Outstanding		4,737,580
Series B [Member]
Entity Common Stock, Shares Outstanding		614,910