v3.22.2.2
Cover
Oct. 06, 2022
Cover [Abstract]  
Document Type 8-K
Document Period End Date Oct. 06, 2022
Entity Registrant Name Ellington Residential Mortgage REIT
Entity Incorporation, State or Country Code MD
Entity File Number 001-35896
Entity Tax Identification Number 46-0687599
Entity Address, Address Line One 53 Forest Avenue
Entity Address, City or Town Old Greenwich
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06870
City Area Code 203
Local Phone Number 698-1200
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Shares of Beneficial Interest, $0.01 par value per share
Trading Symbol EARN
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001560672
Amendment Flag false