v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Jul. 28, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-36844  
Entity Registrant Name RITHM PROPERTY TRUST INC.  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 46-5211870  
Entity Address, Address Line One 799 Broadway  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10003  
City Area Code 646  
Local Phone Number 868-5483  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   7,772,564
Entity Central Index Key 0001614806  
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
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 RPT  
Security Exchange Name NYSE  
9.875% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock    
Document Information [Line Items]    
Title of 12(b) Security 9.875% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock  
Trading Symbol RPT.PRC  
Security Exchange Name NYSE