Securities (Schedule of Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Securities Available-for-Sale: Amortized cost
Due in one year or less	$ 67,363
Due after one year through five years	15,449
Due after five years through ten years	55,747
Due after ten years	864,731
Total	2,094,826	$ 1,869,198
Securities Available-for-Sale: Fair Value
Due in one year or less	67,383
Due after one year through five years	15,496
Due after five years through ten years	53,536
Due after ten years	705,556
Total	1,761,669	1,889,617
MBS/CMO
Securities Available-for-Sale: Amortized cost
Securities without single maturity	846,519
Total	846,519	797,693
Securities Available-for-Sale: Fair Value
Securities without single maturity	714,681
Total	714,681	791,950
US Gov’t Sponsored Entities & Agencies
Securities Available-for-Sale: Amortized cost
Securities without single maturity	245,017
Total	245,017	175,457
Securities Available-for-Sale: Fair Value
Securities without single maturity	205,017
Total	$ 205,017	$ 171,961