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Investment Securities - Schedule of Held-to-Maturity Amortized Cost and Fair Value (Details) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity $ 888,804,000 $ 925,198,000
Allowance for Credit Losses 0 0
Net Carrying Amount 888,804,000 925,198,000
Held-to-maturity, gross unrealized gains 127,000 75,000
Held-to-maturity, gross unrealized losses (89,407,000) (110,443,000)
Fair Value 799,524,000 814,830,000
Accrued interest 2,500,000 3,600,000
CMBS issued by FHLMC, FNMA and GNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 243,622,000 247,441,000
Allowance for Credit Losses 0 0
Net Carrying Amount 243,622,000 247,441,000
Held-to-maturity, gross unrealized gains 0 0
Held-to-maturity, gross unrealized losses (28,231,000) (35,071,000)
Fair Value 215,391,000 212,370,000
CMOs issued by FHLMC, FNMA and GNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 214,385,000 228,761,000
Allowance for Credit Losses 0 0
Net Carrying Amount 214,385,000 228,761,000
Held-to-maturity, gross unrealized gains 97,000 28,000
Held-to-maturity, gross unrealized losses (12,732,000) (16,882,000)
Fair Value 201,750,000 211,907,000
MBS pass-through securities issued by FHLMC, FNMA and GNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 196,247,000 208,983,000
Allowance for Credit Losses 0 0
Net Carrying Amount 196,247,000 208,983,000
Held-to-maturity, gross unrealized gains 24,000 0
Held-to-maturity, gross unrealized losses (23,301,000) (27,326,000)
Fair Value 172,970,000 181,657,000
SBA-backed securities    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 1,514,000 1,853,000
Allowance for Credit Losses 0 0
Net Carrying Amount 1,514,000 1,853,000
Held-to-maturity, gross unrealized gains 0 0
Held-to-maturity, gross unrealized losses (43,000) (90,000)
Fair Value 1,471,000 1,763,000
Debentures of government- sponsored agencies    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 141,357,000 146,126,000
Allowance for Credit Losses 0 0
Net Carrying Amount 141,357,000 146,126,000
Held-to-maturity, gross unrealized gains 0 0
Held-to-maturity, gross unrealized losses (17,775,000) (21,994,000)
Fair Value 123,582,000 124,132,000
Obligations of state and political subdivisions    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 61,679,000 62,034,000
Allowance for Credit Losses 0 0
Net Carrying Amount 61,679,000 62,034,000
Held-to-maturity, gross unrealized gains 6,000 47,000
Held-to-maturity, gross unrealized losses (6,698,000) (7,884,000)
Fair Value 54,987,000 54,197,000
Corporate bonds    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Debt securities, held-to-maturity 30,000,000 30,000,000
Allowance for Credit Losses 0 0
Net Carrying Amount 30,000,000 30,000,000
Held-to-maturity, gross unrealized gains 0 0
Held-to-maturity, gross unrealized losses (627,000) (1,196,000)
Fair Value $ 29,373,000 $ 28,804,000