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Investment Securities Held to Maturity Securities by Type (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity $ 451,278 $ 461,162
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 1 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (69,538) (74,957)
Securities held to maturity, fair value 381,741 386,205
US Government Agencies Residential Mortgage-backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 1,907 2,008
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (181) (224)
Securities held to maturity, fair value 1,726 1,784
US Government Agency Debt Securities Commercial [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 74,052 75,229
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (13,162) (14,196)
Securities held to maturity, fair value 60,890 61,033
Residential Mortgage Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 321,247 329,267
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (49,529) (53,002)
Securities held to maturity, fair value 271,718 276,265
Obligations of U.S. Government-Sponsored Enterprises - Mortgage-Backed Securities - Commercial [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 4,137 4,794
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (89) (129)
Securities held to maturity, fair value 4,048 4,665
Obligations of States and Political Subdivisions [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 26,634 26,643
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 1 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (2,289) (2,865)
Securities held to maturity, fair value 24,346 23,778
Debt Security, Government, Non-US [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Debt Securities, Held-to-maturity 1,000 1,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (50) (40)
Securities held to maturity, fair value $ 950 $ 960