Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 15, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	333-73996
Entity Registrant Name	Morgan Group Holding Co
Entity Central Index Key	0001162283
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-4196940
Entity Address, Address Line One	401 Theodore Fremd Avenue
Entity Address, City or Town	Rye
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10580
City Area Code	914
Local Phone Number	921-5216
Title of 12(b) Security	Class A Common Stock, par value $0.01 per share
Trading Symbol	MGHL
Security Exchange Name	NONE
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float		$ 410,947
Entity Common Stock, Shares Outstanding		600,090
Auditor Firm ID	49
Auditor Name	RSM US, LLP
Auditor Location	New York, New York