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Summary of Significant Accounting Policies - Narrative (Details)
 3 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
May 31, 2024
USD ($)
Mar. 31, 2024
numberOfVariable
variable
Dec. 31, 2024
USD ($)
Segment
store
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Property, Plant and Equipment [Line Items]            
Number of macroeconomic variables | numberOfVariable     3      
Number of economic variables | numberOfVariable     4      
Number of economic scenario variables | numberOfVariable     3      
Number of economic forecast variables | variable     4      
Number of variables | numberOfVariable     2      
Macroeconomic variables, reasonable and supportable period (in months)     18 months      
Historical loss rate on straight-line basis over loan's remaining maturity (in months)     12 months      
Unamortized multifamily FHA MSR's | $       $ 0 $ 2,300,000  
Goodwill impairment | $ $ 104,200,000 $ 104,200,000   104,168,000 0 $ 0
Goodwill | $ $ 0     $ 0 $ 104,168,000  
Number of reportable segments | Segment       1    
Number of operating segments | Segment       1    
Minimum            
Property, Plant and Equipment [Line Items]            
Individually-evaluated loan analysis, loan threshold amount | $       $ 500,000    
Furniture Fixtures and Equipment | Minimum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       3 years    
Furniture Fixtures and Equipment | Maximum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       7 years    
Computer Software and Hardware | Minimum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       3 years    
Computer Software and Hardware | Maximum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       5 years    
Building Improvements | Minimum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       5 years    
Building Improvements | Maximum            
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, useful life (in years)       20 years    
Banking Services            
Property, Plant and Equipment [Line Items]            
Number of stores | store       12    
Lending Services            
Property, Plant and Equipment [Line Items]            
Number of stores | store       4