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FAIR VALUE - Assets and Liabilities Measured At Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Securities available for sale | $ 624,325 | $ 608,233
Mortgage banking derivative | 21,565 | 7,263
Liabilities |  |
Mortgage banking derivative |  | 300
Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
Mortgage-backed securities: residential | 293,270 | 288,181
Mortgage-backed securities: commercial | 41,814 | 36,972
State and municipal securities | 289,241 | 283,080
Securities available for sale | 624,325 | 608,233
Mortgage banking derivative | 1,307 | 198
Interest rate swap derivative | 21,565 | 7,263
Total assets | 647,197 | 615,694
Liabilities |  |
Mortgage banking derivative | 544 | 14
Interest rate swap derivative | 21,599 | 7,860
Total liabilities | 22,143 | 7,874
Level 1 | Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
Mortgage-backed securities: residential | 0 | 0
Mortgage-backed securities: commercial | 0 | 0
State and municipal securities | 0 | 0
Securities available for sale | 0 | 0
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total liabilities | 0 | 0
Level 2 | Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
Mortgage-backed securities: residential | 293,270 | 288,181
Mortgage-backed securities: commercial | 41,814 | 36,972
State and municipal securities | 289,096 | 282,935
Securities available for sale | 624,180 | 608,088
Mortgage banking derivative | 1,307 | 198
Interest rate swap derivative | 21,565 | 7,263
Total assets | 647,052 | 615,549
Liabilities |  |
Mortgage banking derivative | 544 | 14
Interest rate swap derivative | 21,599 | 7,860
Total liabilities | 22,143 | 7,874
Level 3 | Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
Mortgage-backed securities: residential | 0 | 0
Mortgage-backed securities: commercial | 0 | 0
State and municipal securities | 145 | 145
Securities available for sale | 145 | 145
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total assets | 145 | 145
Liabilities |  |
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total liabilities | $ 0 | $ 0

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