Investment Securities (Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investments [Abstract]
Debt securities available for sale, Due in one year or less, Amortized Cost	$ 64,727
Debt securities available for sale, Due from one to five years, Amortized Cost	40,836
Debt securities available for sale, Due after five years through ten years, Amortized Cost	131,967
Debt securities available for sale, Due after ten years, Amortized Cost	846,139
Securities available for sale, Amortized Cost	1,083,669	$ 1,037,990
Debt securities available for sale, Due in one year or less, Fair Value	64,726
Debt securities available for sale, Due from one to five years, Fair Value	37,238
Debt securities available for sale, Due after five years through ten years, Fair Value	116,668
Debt securities available for sale, Due after ten years, Fair Value	705,129
Debt securities available for sale, Fair Value	923,761	887,730
Debt securities held to maturity, Due in one year or less, Amortized Cost	25,506
Debt securities held to maturity, Due from one to five years, Amortized Cost	28,882
Debt securities held to maturity, Due after five years through ten years, Amortized Cost	29,400
Debt securities held to maturity, Due after ten years, Amortized Cost	59,929
Securities held to maturity, Amortized Cost	143,717	148,160
Debt securities held to maturity, Due in one year or less, Fair Value	25,331
Debt securities held to maturity, Due from one to five years, Fair Value	28,036
Debt securities held to maturity, Due after five years through ten years, Fair Value	26,387
Debt securities held to maturity, Due after ten years, Fair Value	51,515
Securities held to maturity, Fair Value	$ 131,269	$ 137,030