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Securities - Available for Sale Securities With Gross Unrealized Losses and Their Fair Value (Details)
$ in Thousands
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 4  
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 69,719  
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss 5,484  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value 69,719  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 5,484  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 0  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 0  
Securities have been in a continuous unrealized loss position, number of positions 147 81
Securities have been in a continuous unrealized loss position, fair value $ 773,359 $ 565,102
Securities have been in a continuous unrealized loss position, unrealized losses 43,805 12,220
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 542,764 435,634
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 24,030 7,827
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 230,595 129,468
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 19,775 $ 4,393
Other Debt Obligations [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 3  
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 61,839  
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss 5,474  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value 61,839  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 5,474  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 0  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 0  
Securities have been in a continuous unrealized loss position, number of positions 32 19
Securities have been in a continuous unrealized loss position, fair value $ 259,780 $ 130,823
Securities have been in a continuous unrealized loss position, unrealized losses 7,203 3,453
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 206,157 76,583
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 5,433 1,976
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 53,623 54,240
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 1,770 $ 1,477
US States and Political Subdivisions Debt Securities [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 3  
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 61,839  
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss 5,474  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value 61,839  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 5,474  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 0  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 0  
US Government Agencies Debt Securities [Member]    
Securities have been in a continuous unrealized loss position, number of positions 7 2
Securities have been in a continuous unrealized loss position, fair value $ 73,870 $ 5,577
Securities have been in a continuous unrealized loss position, unrealized losses 673 9
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 69,749 1,130
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 667 5
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 4,121 4,447
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 6 $ 4
Corporate Debt Securities [Member]    
Securities have been in a continuous unrealized loss position, number of positions 13 13
Securities have been in a continuous unrealized loss position, fair value $ 91,591 $ 94,234
Securities have been in a continuous unrealized loss position, unrealized losses 5,834 3,189
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 63,000 65,453
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 4,425 1,970
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 28,591 28,781
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 1,409 $ 1,219
Collateralized Loan Obligations [Member]    
Securities have been in a continuous unrealized loss position, number of positions 12 4
Securities have been in a continuous unrealized loss position, fair value $ 94,319 $ 31,012
Securities have been in a continuous unrealized loss position, unrealized losses 696 255
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 73,408 10,000
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 341 1
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 20,911 21,012
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 355 $ 254
Collateralized Mortgage Backed Securities [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 1  
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 7,880  
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss 10  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value 7,880  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 10  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 0  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 0  
Securities have been in a continuous unrealized loss position, number of positions 115 62
Securities have been in a continuous unrealized loss position, fair value $ 513,579 $ 434,279
Securities have been in a continuous unrealized loss position, unrealized losses 36,602 8,767
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 336,607 359,051
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 18,597 5,851
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 176,972 75,228
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 18,005 $ 2,916
REMIC and CMO [Member]    
Securities have been in a continuous unrealized loss position, number of positions 45 15
Securities have been in a continuous unrealized loss position, fair value $ 174,122 $ 124,131
Securities have been in a continuous unrealized loss position, unrealized losses 12,123 3,656
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 120,470 105,959
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 6,670 2,800
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 53,652 18,172
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 5,453 $ 856
GNMA [Member]    
Securities have been in a continuous unrealized loss position, number of positions 4 4
Securities have been in a continuous unrealized loss position, fair value $ 8,793 $ 9,924
Securities have been in a continuous unrealized loss position, unrealized losses 941 316
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 307 1,138
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 9 16
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 8,486 8,786
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 932 $ 300
FNMA [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 1  
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 7,880  
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss 10  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value 7,880  
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 10  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 0  
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 0  
Securities have been in a continuous unrealized loss position, number of positions 43 25
Securities have been in a continuous unrealized loss position, fair value $ 197,920 $ 171,109
Securities have been in a continuous unrealized loss position, unrealized losses 12,454 2,160
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 151,792 153,657
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 8,184 1,587
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 46,128 17,452
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 4,270 $ 573
FHLMC [Member]    
Securities have been in a continuous unrealized loss position, number of positions 23 18
Securities have been in a continuous unrealized loss position, fair value $ 132,744 $ 129,115
Securities have been in a continuous unrealized loss position, unrealized losses 11,084 2,635
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 64,038 98,297
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses 3,734 1,448
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 68,706 30,818
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ 7,350 $ 1,187