v3.24.1.1.u2
Investment Securities - Amortized cost to Estimated Fair Value (Details)
3 Months Ended
Mar. 31, 2024
USD ($)
security
Mar. 31, 2023
security
Dec. 31, 2023
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost $ 220,193,000   $ 225,679,000
Gross Unrealized Gains 18,000   17,000
Gross Unrealized Losses (17,957,000)   (17,367,000)
Allowance for Credit Losses 0   0
Investment securities available for sale $ 202,254,000   208,329,000
Number of securities sold | security 0 0  
Pledged securities $ 0   170,700,000
Minimum      
Debt Securities, Available-for-sale [Line Items]      
Subordinated debt 500,000    
Maximum      
Debt Securities, Available-for-sale [Line Items]      
Subordinated debt $ 2,000,000    
Standard & Poor's, AAA Rating      
Debt Securities, Available-for-sale [Line Items]      
Credit financing ratings 82.00%    
Standard & Poor's, AA+ Rating      
Debt Securities, Available-for-sale [Line Items]      
Credit financing ratings 8.00%    
Standard & Poor's, AA- Rating      
Debt Securities, Available-for-sale [Line Items]      
Credit financing ratings 10.00%    
U.S. Treasuries      
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost $ 141,347,000   161,420,000
Gross Unrealized Gains 0   0
Gross Unrealized Losses (12,664,000)   (12,192,000)
Allowance for Credit Losses 0   0
Investment securities available for sale 128,683,000   149,228,000
Municipal      
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost 11,699,000   11,699,000
Gross Unrealized Gains 0   4,000
Gross Unrealized Losses (2,445,000)   (2,331,000)
Allowance for Credit Losses 0   0
Investment securities available for sale 9,254,000   9,372,000
Corporate      
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost 5,000,000   5,000,000
Gross Unrealized Gains 0   0
Gross Unrealized Losses (543,000)   (587,000)
Allowance for Credit Losses 0   0
Investment securities available for sale $ 4,457,000   4,413,000
Number of securities in a loss position for greater than twelve months | security 5    
Asset-backed securities      
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost $ 6,601,000   7,069,000
Gross Unrealized Gains 18,000   13,000
Gross Unrealized Losses (38,000)   (37,000)
Allowance for Credit Losses 0   0
Investment securities available for sale $ 6,581,000   7,045,000
Number of securities in a loss position for greater than twelve months | security 3    
Mortgage-backed securities      
Debt Securities, Available-for-sale [Line Items]      
Amortized Cost $ 55,546,000   40,491,000
Gross Unrealized Gains 0   0
Gross Unrealized Losses (2,267,000)   (2,220,000)
Allowance for Credit Losses 0   0
Investment securities available for sale $ 53,279,000   $ 38,271,000