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Investment Securities - Schedule of Available-for-Sale Securities Amortized Cost and Fair Value (Details) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost $ 602,384,000 $ 613,479,000
Available-for-sale, gross unrealized gains 2,000 3,000
Available-for-sale, gross unrealized losses (66,021,000) (61,454,000)
Allowance for Credit Losses 0 0
Fair Value $ 536,365,000 $ 552,028,000
Debt securities, available-for-sale, accrued interest, after allowance for credit loss, statement of financial position [Extensible Enumeration] Interest receivable and other assets Interest receivable and other assets
Accrued interest $ 2,300,000 $ 2,300,000
MBS pass-through securities issued by FHLMC, FNMA and GNMA    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 79,460,000 81,937,000
Available-for-sale, gross unrealized gains 2,000 2,000
Available-for-sale, gross unrealized losses (10,073,000) (9,516,000)
Allowance for Credit Losses 0 0
Fair Value 69,389,000 72,423,000
CMOs issued by FHLMC    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 261,797,000 266,407,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (26,837,000) (24,758,000)
Allowance for Credit Losses 0 0
Fair Value 234,960,000 241,649,000
CMOs issued by FNMA    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 23,099,000 23,987,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (2,835,000) (2,715,000)
Allowance for Credit Losses 0 0
Fair Value 20,264,000 21,272,000
CMOs issued by GNMA    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 19,486,000 20,006,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (3,191,000) (2,878,000)
Allowance for Credit Losses 0 0
Fair Value 16,295,000 17,128,000
SBA-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 18,805,000 21,126,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (1,657,000) (1,655,000)
Allowance for Credit Losses 0 0
Fair Value 17,148,000 19,471,000
Debentures of government- sponsored agencies    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 73,906,000 73,899,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (7,218,000) (7,037,000)
Allowance for Credit Losses 0 0
Fair Value 66,688,000 66,862,000
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 11,928,000 11,923,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (1,394,000) (1,300,000)
Allowance for Credit Losses 0
Fair Value 10,534,000 10,623,000
Obligations of state and political subdivisions    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 101,911,000 102,202,000
Available-for-sale, gross unrealized gains 0 1,000
Available-for-sale, gross unrealized losses (11,568,000) (10,321,000)
Allowance for Credit Losses 0 0
Fair Value 90,343,000 91,882,000
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale, amortized cost 11,992,000 11,992,000
Available-for-sale, gross unrealized gains 0 0
Available-for-sale, gross unrealized losses (1,248,000) (1,274,000)
Allowance for Credit Losses 0 0
Fair Value $ 10,744,000 $ 10,718,000