Investment Securities (Amortized Cost And Estimated Fair Values Of AFS Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Amortized Cost	$ 721,717	$ 731,495
Available-for-Sale Securities, Gross Unrealized Gains	2,403	11,721
Available-for-Sale Securities, Gross Unrealized Losses	(41,136)	(8,898)
Available-for-Sale Securities, Fair value	682,984	734,318
State And Municipals [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Amortized Cost	313,076	315,747
Available-for-Sale Securities, Gross Unrealized Gains	2,389	11,600
Available-for-Sale Securities, Gross Unrealized Losses	(6,608)	(176)
Available-for-Sale Securities, Fair value	308,857	327,171
Pass-Through Mortgage Securities [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Amortized Cost	185,139	187,494
Available-for-Sale Securities, Gross Unrealized Gains	13	54
Available-for-Sale Securities, Gross Unrealized Losses	(16,878)	(4,591)
Available-for-Sale Securities, Fair value	168,274	182,957
Collateralized Mortgage Obligations [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Amortized Cost	104,502	109,254
Available-for-Sale Securities, Gross Unrealized Gains	1	67
Available-for-Sale Securities, Gross Unrealized Losses	(9,817)	(3,239)
Available-for-Sale Securities, Fair value	94,686	106,082
Corporate Bonds [Member]
Schedule Of Amortized Cost And Estimated Fair Values [Line Items]
Amortized Cost	119,000	119,000
Available-for-Sale Securities, Gross Unrealized Losses	(7,833)	(892)
Available-for-Sale Securities, Fair value	$ 111,167	$ 118,108

Schedule Of Amortized Cost And Estimated Fair Values [Line Items]

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-SubTopic 10
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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