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SECURITIES AVAILABLE FOR SALE - Schedule of Maturity of Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Available for sale, Amortized Cost |  |
Within 1 year | $ 4,028 |
Over 1 year to 5 years | 15,587 |
Over 5 years to 10 years | 45,826 |
Over 10 years | 110,806 |
Total bonds and obligations | 176,247 |
Mortgage-backed securities | 558,791 |
Amortized Cost | 735,038 | $ 719,983
Available for sale, Fair Value |  |
Within 1 year | 4,027 |
Over 1 year to 5 years | 15,446 |
Over 5 years to 10 years | 45,418 |
Over 10 years | 108,359 |
Total bonds and obligations | 173,250 |
Mortgage-backed securities | 539,408 |
Total securities available for sale | $ 712,658 | $ 717,242

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