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Cover - USD ($)
 12 Months Ended
Dec. 31, 2023
Feb. 15, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-32216    
Entity Registrant Name NEW YORK MORTGAGE TRUST, INC.    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 47-0934168    
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    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 893,201,750
Entity Common Stock, Shares Outstanding   91,234,568  
Documents Incorporated by Reference
Document Where
Incorporated
  
1.     Portions of the Registrant's Definitive Proxy Statement relating to its 2024 Annual Meeting of Stockholders scheduled for June 2024 to be filed with the Securities and Exchange Commission by no later than April 29, 2024. 
 Part III, Items 10-14
    
Amendment Flag false    
Entity Central Index Key 0001273685    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
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, par value $0.01 per share, $25.00 Liquidation Preference      
Document Information [Line Items]      
Title of 12(b) Security 8.000% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference    
Trading Symbol NYMTN    
Security Exchange Name NASDAQ    
7.875% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference      
Document Information [Line Items]      
Title of 12(b) Security 7.875% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference    
Trading Symbol NYMTM    
Security Exchange Name NASDAQ    
6.875% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference      
Document Information [Line Items]      
Title of 12(b) Security 6.875% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference    
Trading Symbol NYMTL    
Security Exchange Name NASDAQ    
7.000% Series G Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference      
Document Information [Line Items]      
Title of 12(b) Security 7.000% Series G Cumulative Redeemable Preferred Stock, par value $0.01 per share, $25.00 Liquidation Preference    
Trading Symbol NYMTZ    
Security Exchange Name NASDAQ