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Securities (Schedule of Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Securities Available-for-Sale: Amortized cost
Due in one year or less	$ 2,806
Due after one year through five years	18,670
Due after five years through ten years	70,964
Due after ten years	803,608
Total	1,869,198	$ 1,172,175
Securities Available-for-Sale: Fair Value
Due in one year or less	2,844
Due after one year through five years	19,395
Due after five years through ten years	75,685
Due after ten years	827,782
Total	1,889,617	1,217,852
MBS/CMO
Securities Available-for-Sale: Amortized cost
Securities without single maturity	797,693
Total	797,693	535,526
Securities Available-for-Sale: Fair Value
Securities without single maturity	791,950
Total	791,950	548,307
US Gov’t Sponsored Entities & Agencies
Securities Available-for-Sale: Amortized cost
Securities without single maturity	175,457
Total	175,457	88,376
Securities Available-for-Sale: Fair Value
Securities without single maturity	171,961
Total	$ 171,961	$ 88,298

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