Document and Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2019	Jun. 26, 2019	Sep. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	MSN
Entity Registrant Name	EMERSON RADIO CORP
Entity Central Index Key	0000032621
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		21,042,652
Entity Public Float			$ 10,317,373
Entity File Number	001-07731
Entity Tax Identification Number	223285224
Entity Address, Address Line One	35 Waterview Blvd, Suite 140
Entity Address, City or Town	Parsippany
Entity Address, State or Province	NJ
Entity Address, Country	US
Entity Address, Postal Zip Code	07054
City Area Code	973
Local Phone Number	428-2000