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Cover
Mar. 01, 2022
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Mar. 01, 2022
Current Fiscal Year End Date --12-31
Entity File Number 001-32216
Entity Registrant Name NEW YORK MORTGAGE TRUST, INC.
Entity Central Index Key 0001273685
Entity Tax Identification Number 47-0934168
Entity Incorporation, State or Country Code MD
Entity Address, Address Line One 90 Park Avenue
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10016
City Area Code 212
Local Phone Number 792-0107
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock, par value $0.01 per share  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol NYMT
Security Exchange Name NASDAQ
8.000% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security 8.000% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock,
Trading Symbol NYMTN
Security Exchange Name NASDAQ
7.875 % Series E Fixed- to-Floating Rate Cumulative Redeemable Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security 7.875% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol NYMTM
Security Exchange Name NASDAQ
6.875% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security 6.875% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol NYMTL
Security Exchange Name NASDAQ
7.000% Series G Cumulative Redeemable Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security 7.000% Series G Cumulative Redeemable Preferred Stock
Trading Symbol NYMTZ
Security Exchange Name NASDAQ