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Investment Securities Available-For-Sale (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Due in one year or less | $ 105,859 |
Due after one year through five years | 948,501 |
Due after five years through ten years | 157,760 |
Due after ten years | 470 |
Mortgage-backed securities | 663,441 |
Total debt securities available-for-sale | 1,876,031 | $ 1,173,268
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Due in one year or less | 106,732 |
Due after one year through five years | 940,267 |
Due after five years through ten years | 155,850 |
Due after ten years | 465 |
Mortgage-backed securities | 659,727 |
Total debt securities available-for-sale | 1,863,041 | 1,197,467
Accrued interest receivable on investment securities available-for-sale | 4,800 | 3,840
U.S. Treasury and Federal agencies securities |  |
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Total debt securities available-for-sale | 1,093,780 | 610,195
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Total debt securities available-for-sale | 1,084,006 | 619,482
U.S. States and political subdivisions securities |  |
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Total debt securities available-for-sale | 95,700 | 78,812
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Total debt securities available-for-sale | 95,701 | 81,127
Mortgage-backed securities - Federal agencies |  |
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Total debt securities available-for-sale | 663,441 | 442,748
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Total debt securities available-for-sale | 659,727 | 453,789
Corporate debt securities |  |
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Total debt securities available-for-sale | 22,510 | 40,813
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Total debt securities available-for-sale | 23,009 | 42,369
Foreign government and other securities |  |
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost |  |
Total debt securities available-for-sale | 600 | 700
Contractual maturities of investments in debt securities available-for-sale, Fair Value |  |
Total debt securities available-for-sale | $ 598 | $ 700

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