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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 | Jun. 30, 2023 | Dec. 31, 2022
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Schedule of Available-for-sale Securities [Line Items] |  |
Amortized cost within one year | $ 3,978 |
Amortized cost one to five years | 355,057 |
Amortized cost for five to ten years | 195,305 |
Amortized cost for after ten years | 248,019 |
Amortized cost, available for sale | 802,359 |
Total available for sale investment securities, amortized cost | 1,033,128 | $ 1,137,702
Within one year, amortized cost | 33,919 |
One to five years, amortized cost | 231,328 |
Five to ten years, amortized cost | 331,954 |
After ten years, amortized cost | 964,613 |
Amortized cost, held to maturity | 1,561,814 |
Amortized cost, held to maturity, mortgage obligations and backed pools | 1,983,496 | 2,022,748
Fair value within one year | 3,912 |
Fair value for one to five years | 324,602 |
Fair value for five to ten years | 164,194 |
Fair value for after ten years | 212,556 |
Fair value, available for sale | 705,264 |
Fair value, available for sale, mortgage obligations and backed pools | 905,813 | 997,558
Within one year, fair value | 33,698 |
One to five years, fair value | 217,643 |
Five to ten years, fair value | 283,216 |
After ten years, fair value | 778,924 |
Fair value, held to maturity | 1,313,481 |
Fair value, held to maturity, mortgage obligations and backed pools | 1,668,229 | 1,681,309
Federal agency collateralized mortgage obligations |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized cost, available for sale, mortgage obligations and backed pools | 24,529 |
Total available for sale investment securities, amortized cost | 24,529 | 33,011
Amortized cost, held to maturity, mortgage obligations and backed pools | 54,067 | 56,564
Fair value, available for sale, mortgage obligations and backed pools | 22,895 | 31,215
Fair value, held to maturity, mortgage obligations and backed pools | 45,466 | 47,699
Federal agency mortgage-backed pools |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized cost, available for sale, mortgage obligations and backed pools | 206,240 |
Total available for sale investment securities, amortized cost | 206,240 | 220,963
Amortized cost, held to maturity, mortgage obligations and backed pools | 333,767 | 343,953
Fair value, available for sale, mortgage obligations and backed pools | 177,654 | 190,656
Fair value, held to maturity, mortgage obligations and backed pools | 280,620 | 287,239
Private labeled mortgage-backed pools |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized cost, held to maturity, mortgage obligations and backed pools | 33,848 | 35,466
Fair value, held to maturity, mortgage obligations and backed pools | $ 28,662 | $ 29,973

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