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Securities - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Schedule of Available-for-sale Securities [Line Items] |  |
Amortized cost within one year | $ 2,607 |
Amortized cost one to five years | 336,326 |
Amortized cost for five to ten years | 217,280 |
Amortized cost for after ten years | 271,112 |
Available for sale | 827,325 |
Amortized Cost | 1,064,941 | $ 1,137,702
Within one year, amortized cost | 47,101 |
One to five years, amortized cost | 226,069 |
Five to ten years, amortized cost | 317,729 |
After ten years, amortized cost | 995,563 |
Total amortized cost | 1,586,462 |
Investment securities, held to maturity | 2,015,537 | 2,022,748
Fair value within one year | 2,572 |
Fair value for one to five years | 310,880 |
Fair value for five to ten years | 186,923 |
Fair value for after ten years | 234,383 |
Total fair value | 734,758 |
Investment securities, available for sale | 943,441 | 997,558
Within one year, fair value | 46,946 |
One to five years, fair value | 214,351 |
Five to ten years, fair value | 276,719 |
After ten years, fair value | 807,296 |
Total fair value | 1,345,312 |
Fair Value | 1,709,392 | 1,681,309
Federal agency collateralized mortgage obligations |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available for sale | 25,919 |
Amortized Cost | 25,919 | 33,011
Investment securities, held to maturity | 55,379 | 56,564
Investment securities, available for sale | 24,559 | 31,215
Fair Value | 47,376 | 47,699
Federal agency mortgage-backed pools |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available for sale | 211,697 |
Amortized Cost | 211,697 | 220,963
Investment securities, held to maturity | 338,861 | 343,953
Investment securities, available for sale | 184,124 | 190,656
Fair Value | 287,055 | 287,239
Private labeled mortgage-backed pools |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Investment securities, held to maturity | 34,835 | 35,466
Fair Value | $ 29,649 | $ 29,973

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