v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 07, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Securities Act File Number 814-01035  
Entity Registrant Name NEWTEKONE, INC.  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 46-3755188  
Entity Address, Address Line One 4800 T Rex Avenue  
Entity Address, Address Line Two Suite 120  
Entity Address, City or Town Boca Raton  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33431  
City Area Code 212  
Local Phone Number 356-9500  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   28,884,731
Entity Central Index Key 0001587987  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Common Stock, par value $0.02 per share    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.02 per share  
Trading Symbol NEWT  
Security Exchange Name NASDAQ  
8.00% Notes due 2028    
Document Information [Line Items]    
Title of 12(b) Security 8.00% Notes due 2028  
Trading Symbol NEWTI  
Security Exchange Name NASDAQ  
2029 8.50% Notes    
Document Information [Line Items]    
Title of 12(b) Security 8.50% Notes due 2029  
Trading Symbol NEWTG  
Security Exchange Name NASDAQ  
2029 8.625% Notes    
Document Information [Line Items]    
Title of 12(b) Security 8.625% Notes due 2029  
Trading Symbol NEWTH  
Security Exchange Name NASDAQ  
2031 8.50% Notes    
Document Information [Line Items]    
Title of 12(b) Security 8.50% Notes due 2031  
Trading Symbol NEWTO  
Security Exchange Name NASDAQ  
Series B Preferred Stock, Depositary Shares    
Document Information [Line Items]    
Title of 12(b) Security Depositary Shares, each representing a 1/40th interest in a share of 8.500% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series B  
Trading Symbol NEWTP  
Security Exchange Name NASDAQ