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Investment Securities - Held-to-Maturity Amortized Cost and Fair Value (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost $ 972,207,000 $ 342,222,000
Allowance for Credit Losses 0 0
Net Carrying Amount 972,207,000 342,222,000
Held-to-maturity, gross unrealized gains 70,000 3,400,000
Held-to-maturity, gross unrealized losses (127,038,000) (2,867,000)
Held to maturity, fair value 845,239,000 342,755,000
Accrued interest 3,700,000 1,100,000
MBS pass-through securities issued by FHLMC, FNMA and GNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 331,281,000 126,990,000
Allowance for Credit Losses 0 0
Net Carrying Amount 331,281,000 126,990,000
Held-to-maturity, gross unrealized gains 0 2,110,000
Held-to-maturity, gross unrealized losses (50,147,000) (712,000)
Held to maturity, fair value 281,134,000 128,388,000
CMOs issued by FHLMC    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 235,971,000 106,851,000
Allowance for Credit Losses 0 0
Net Carrying Amount 235,971,000 106,851,000
Held-to-maturity, gross unrealized gains 59,000 668,000
Held-to-maturity, gross unrealized losses (29,503,000) (1,045,000)
Held to maturity, fair value 206,527,000 106,474,000
CMOs issued by FNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 111,904,000 4,866,000
Allowance for Credit Losses 0 0
Net Carrying Amount 111,904,000 4,866,000
Held-to-maturity, gross unrealized gains 0 128,000
Held-to-maturity, gross unrealized losses (5,419,000) 0
Held to maturity, fair value 106,485,000 4,994,000
CMOs issued by GNMA    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 52,356,000  
Allowance for Credit Losses 0  
Net Carrying Amount 52,356,000  
Held-to-maturity, gross unrealized gains 11,000  
Held-to-maturity, gross unrealized losses (3,076,000)  
Held to maturity, fair value 49,291,000  
SBA-backed securities    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 2,372,000 4,840,000
Allowance for Credit Losses 0 0
Net Carrying Amount 2,372,000 4,840,000
Held-to-maturity, gross unrealized gains 0 198,000
Held-to-maturity, gross unrealized losses (133,000) 0
Held to maturity, fair value 2,239,000 5,038,000
Debentures of government sponsored agencies    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 145,823,000 51,472,000
Allowance for Credit Losses
Net Carrying Amount 145,823,000 51,472,000
Held-to-maturity, gross unrealized gains 0 0
Held-to-maturity, gross unrealized losses (26,467,000) (901,000)
Held to maturity, fair value 119,356,000 50,571,000
Obligations of state and political subdivisions    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 62,500,000 47,203,000
Allowance for Credit Losses 0 0
Net Carrying Amount 62,500,000 47,203,000
Held-to-maturity, gross unrealized gains 0 296,000
Held-to-maturity, gross unrealized losses (10,741,000) (209,000)
Held to maturity, fair value 51,759,000 47,290,000
Corporate bonds    
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]    
Held to maturity, amortized cost 30,000,000 $ 0
Allowance for Credit Losses 0  
Net Carrying Amount 30,000,000  
Held-to-maturity, gross unrealized gains 0  
Held-to-maturity, gross unrealized losses (1,552,000)  
Held to maturity, fair value $ 28,448,000