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Investment Securities - Contractual Maturities (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 7,009,000 |
Due after one year through five years | 28,441,000 |
Due after five years through ten years | 71,319,000 |
Due after ten years | 156,528,000 |
Total investment securities due at a single maturity date | 263,297,000 |
Mortgage-backed securities | 620,535,000 |
Amortized Cost | 883,832,000 | $ 770,195,000
Fair Value |  |
Due in one year or less | 7,095,000 |
Due after one year through five years | 29,608,000 |
Due after five years through ten years | 74,089,000 |
Due after ten years | 160,798,000 |
Total investment securities due at a single maturity date | 271,590,000 |
Mortgage-backed securities | 622,745,000 |
Fair Value | 894,335,000 | 802,163,000
Amortized Cost |  |
Due in one year or less | 0 |
Due after one year through five years | 0 |
Due after five years through ten years | 68,210,000 |
Due after ten years | 72,801,000 |
Total investment securities due at a single maturity date | 141,011,000 |
Mortgage-backed securities | 242,382,000 |
Total | 383,393,000 | 0
Fair Value |  |
Due in one year or less | 0 |
Due after one year through five years | 0 |
Due after five years through ten years | 68,014,000 |
Due after ten years | 71,349,000 |
Total investment securities due at a single maturity date | 139,363,000 |
Mortgage-backed securities | 236,968,000 |
Total | $ 376,331,000 | $ 0

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