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Securities - Unrealized Losses on Available-for-Sale of Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 428,669 | $ 1,095,830
12 Months or Longer | 1,160,723 | 394,300
Total | 1,589,392 | 1,490,130
Unrealized Losses |  |
Less than 12 Months | 30,152 | 20,921
12 Months or Longer | 206,692 | 11,982
Total | 236,844 | 32,903
U.S. Treasuries |  |
Fair Value |  |
Less than 12 Months | 28,602 | 147,810
12 Months or Longer | 138,649 | 0
Total | 167,251 | 147,810
Unrealized Losses |  |
Less than 12 Months | 2,132 | 2,542
12 Months or Longer | 20,787 | 0
Total | 22,919 | 2,542
Obligations of U.S. Government sponsored entities |  |
Fair Value |  |
Less than 12 Months | 143,794 | 362,895
12 Months or Longer | 457,373 | 289,210
Total | 601,167 | 652,105
Unrealized Losses |  |
Less than 12 Months | 7,508 | 6,694
12 Months or Longer | 72,517 | 8,678
Total | 80,025 | 15,372
Obligations of U.S. states and political subdivisions |  |
Fair Value |  |
Less than 12 Months | 46,638 | 9,700
12 Months or Longer | 33,435 | 1,283
Total | 80,073 | 10,983
Unrealized Losses |  |
Less than 12 Months | 2,385 | 85
12 Months or Longer | 5,941 | 15
Total | 8,326 | 100
U.S. Government agencies |  |
Fair Value |  |
Less than 12 Months | 22,945 | 22,074
12 Months or Longer | 29,356 | 16,846
Total | 52,301 | 38,920
Unrealized Losses |  |
Less than 12 Months | 1,258 | 160
12 Months or Longer | 4,813 | 372
Total | 6,071 | 532
U.S. Government sponsored entities |  |
Fair Value |  |
Less than 12 Months | 186,690 | 553,351
12 Months or Longer | 499,532 | 84,537
Total | 686,222 | 637,888
Unrealized Losses |  |
Less than 12 Months | 16,869 | 11,440
12 Months or Longer | 102,512 | 2,841
Total | 119,381 | 14,281
U.S. corporate debt securities |  |
Fair Value |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 2,378 | 2,424
Total | 2,378 | 2,424
Unrealized Losses |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 122 | 76
Total | $ 122 | $ 76

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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