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Note 4 - Investment Securities - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Due within one year, AFS, amortized cost | $ 38,868 |
Due within one year, AFS, fair value | 38,329 |
Due within one year, HTM, carrying value | 15,029 |
Due within one year, HTM, fair value | 14,796 |
Due after one year but within five years, AFS, amortized cost | 154,801 |
Due after one year but within five years, AFS, fair value | 145,075 |
Due after one year but within five years, HTM, carrying value | 203,384 |
Due after one year but within five years, HTM, fair value | 194,412 |
Due after five years but within 10 years, AFS, amortized cost | 68,137 |
Due after five years but within 10 years, AFS, fair value | 60,473 |
Due after five years but within 10 years, HTM, carrying value | 26,278 |
Due after five years but within 10 years, HTM, fair value | 23,767 |
Due after 10 years, AFS, amortized cost | 161,906 |
Due after 10 years, AFS, fair value | 148,002 |
Due after 10 years, HTM, carrying value | 610 |
Due after 10 years, HTM, fair value | 601 |
Mortgage-backed securities – government agencies, AFS, amortized cost | 874,265 |
Mortgage-backed securities – government agencies, AFS, fair value | 752,738 |
Mortgage backed securities - government agencies, HTM, carrying value | 227,916 |
Mortgage backed securities - government agencies, HTM, fair value | 198,257 |
Total available for sale debt securities, amortized cost | 1,297,977 | $ 1,190,379
Total available for sale debt securities, fair value | 1,144,617 | 1,180,298
Total held to maturity debt securities, carrying value | 473,217 |
Total held to maturity debt securities, fair value | $ 431,833 | $ 0

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