Securities (Securities Held to Maturity with Unrealized Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	$ 1,836,592	$ 332,659
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	112,063	1,929
Held to maturity, Losses 12 months or longer, Fair Value	725,298	11,837
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	125,808	464
Held to maturity, Total, Fair Value	2,561,890	344,496
Held to maturity, Total, Gross Unrealized Losses	237,871	2,393
U.S. Treasury And Government Agency Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	145,893	14,837
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	13,245	20
Held to maturity, Losses 12 months or longer, Fair Value	226,499
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	35,799
Held to maturity, Total, Fair Value	372,392	14,837
Held to maturity, Total, Gross Unrealized Losses	49,044	20
Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	560,288	7,795
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	8,878	205
Held to maturity, Losses 12 months or longer, Fair Value	64,346
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	17,680
Held to maturity, Total, Fair Value	624,634	7,795
Held to maturity, Total, Gross Unrealized Losses	26,558	205
Residential Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	391,146	253,661
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	30,515	1,499
Held to maturity, Losses 12 months or longer, Fair Value	270,800
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	42,017
Held to maturity, Total, Fair Value	661,946	253,661
Held to maturity, Total, Gross Unrealized Losses	72,532	1,499
Commercial Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	697,827	56,366
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	56,899	205
Held to maturity, Losses 12 months or longer, Fair Value	163,653	11,837
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	30,312	464
Held to maturity, Total, Fair Value	861,480	68,203
Held to maturity, Total, Gross Unrealized Losses	87,211	$ 669
Collateralized Mortgage Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	41,438
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	2,526
Held to maturity, Total, Fair Value	41,438
Held to maturity, Total, Gross Unrealized Losses	$ 2,526

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

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