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Investments Securities - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Amortized Cost    
One year or less $ 0  
Total AFS Debt Securities 0  
Amortized Cost 44 $ 100,041
Fair Value    
One year or less 0  
Total AFS Debt Securities 0  
Fair Value 41 $ 99,504
Amortized Cost    
One year or less 0  
Total HTM Debt Securities 0  
Amortized Cost 50,049  
Fair Value    
One year or less 0  
Total HTM Debt Securities 0  
Fair Value 49,750  
U.S. Agency residential mortgage-backed securities and collateralized mortgage obligations    
Amortized Cost    
Without single maturity date 44  
Fair Value    
Without single maturity date 41  
Amortized Cost    
Without single maturity date 50,049  
Fair Value    
Without single maturity $ 49,750