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Note 13 - Commitments and Contingencies - Legal Proceedings (Details)
12 Months Ended
Dec. 31, 2020
matter
Sep. 23, 2019
Certificates
Aug. 31, 2018
Certificates
Apr. 12, 2018
Certificates
Jun. 05, 2017
Certificates
Dec. 17, 2016
Certificates
Loss Contingencies [Line Items]            
Minimum Number of Pending or Threatened Matters That Could Effect Our Results | matter 1          
Insurance Claims | Total primary reserves | Maximum            
Loss Contingencies [Line Items]            
Loss Contingency, Legal Actions Commencement, Period 2 years          
Insurance Claims | Total pool reserves | Maximum            
Loss Contingencies [Line Items]            
Loss Contingency, Legal Actions Commencement, Period 3 years          
Ocwen | Initial            
Loss Contingencies [Line Items]            
Insurance Certificates Issued Under Multiple Insurance Policies           9,420
Ocwen | Amended            
Loss Contingencies [Line Items]            
Insurance Certificates Issued Under Multiple Insurance Policies         8,870  
Ocwen | Narrowed Scope            
Loss Contingencies [Line Items]            
Insurance Certificates Whose Scopes Were Narrowed as a Result of the Confidential Agreement       2,500    
Nationstar | Insurance coverage decisions            
Loss Contingencies [Line Items]            
Insurance Certificates Issued Under Multiple Insurance Policies   1,704 3,014      
Nationstar | Insurance premium refunds            
Loss Contingencies [Line Items]            
Insurance Certificates Issued Under Multiple Insurance Policies     2,231