Securities (Schedule of Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Securities Available-for-Sale: Amortized cost
Due in one year or less	$ 1,768
Due after one year through five years	17,548
Due after five years through ten years	65,213
Due after ten years	805,411
Total	1,871,260	$ 2,094,826
Securities Available-for-Sale: Fair Value
Due in one year or less	1,766
Due after one year through five years	17,589
Due after five years through ten years	62,296
Due after ten years	687,224
Total	1,596,832	1,761,669
MBS/CMO
Securities Available-for-Sale: Amortized cost
Securities without single maturity	761,025
Total	761,025	846,519
Securities Available-for-Sale: Fair Value
Securities without single maturity	645,040
Total	645,040	714,681
US Gov’t Sponsored Entities & Agencies
Securities Available-for-Sale: Amortized cost
Securities without single maturity	220,295
Total	220,295	245,017
Securities Available-for-Sale: Fair Value
Securities without single maturity	182,917
Total	$ 182,917	$ 205,017