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Available-For-Sale And Held-To-Maturity Securities (Schedule Of Amortized Cost And Fair Values Of The Available For Sale Securities And Held To Maturity Securities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
[3]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost $ 1,908,036 $ 2,104,513  
Available for sale securities, unrealized gains [1] 455 26,406  
Available-for-sale Securities, Gross unrealized losses [1] (247,644) (17,026)  
Available-for-sale securities 1,660,847 [2] 2,113,893  
Held-to-maturity Securities, Amortized cost [3] 5,991,450 5,348,558  
Held-to-maturity Securities, Gross unrealized gains [1],[3] 2,906 7,659  
Held-to-maturity Securities, Gross unrealized losses [1],[3] (328,822) (12,736)  
Held-to-maturity securities, Estimated fair value 5,665,534 [3] 5,343,481 $ 5,343,481
U.S. Government Agency Securities [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 2,118 1,800  
Available for sale securities, unrealized gains [1]   8  
Available-for-sale Securities, Gross unrealized losses [1] (224)    
Available-for-sale securities 1,894 1,808  
State And Municipal Securities [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 2,354 2,372  
Available for sale securities, unrealized gains [1]   27  
Available-for-sale Securities, Gross unrealized losses [1] (40)    
Available-for-sale securities 2,314 2,399  
Agency Mortgage-Backed Securities [Member] | Agency Securities [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 944,794 954,021  
Available for sale securities, unrealized gains [1] 9 7,181  
Available-for-sale Securities, Gross unrealized losses [1] (143,342) (9,016)  
Available-for-sale securities 801,461 [2] 952,186  
Agency Mortgage-Backed Securities [Member] | Commercial [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 71,762 72,765  
Available for sale securities, unrealized gains [1]   1,220  
Available-for-sale Securities, Gross unrealized losses [1] (4,773)    
Available-for-sale securities 66,989 [2] 73,985  
Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 461 564  
Available for sale securities, unrealized gains [1] 3 4  
Available-for-sale securities 464 [2] 568  
Corporate Fixed Income Securities [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 653,983 783,289  
Available for sale securities, unrealized gains [1] 193 14,385  
Available-for-sale Securities, Gross unrealized losses [1] (85,425) (5,781)  
Available-for-sale securities 568,751 791,893  
Asset-Backed Securities [Member]      
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]      
Available-for-sale Securities, Amortized cost 232,564 289,702  
Available for sale securities, unrealized gains [1] 250 3,581  
Available-for-sale Securities, Gross unrealized losses [1] (13,840) (2,229)  
Available-for-sale securities 218,974 [2] $ 291,054  
Held-to-maturity Securities, Amortized cost $ 5,991,450    
[1] Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive income.
[2] Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.
[3] Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.