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FAIR VALUE - Assets and Liabilities Measured At Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Securities available for sale | $ 734,845 | $ 608,233
Mortgage banking derivative | 21,764 | 7,263
Liabilities |  |
Mortgage banking derivative | 424 | 300
Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
U.S. government sponsored agency securities | 36,487 |
Mortgage-backed securities: residential | 279,503 | 288,181
Mortgage-backed securities: commercial | 36,881 | 36,972
State and municipal securities | 381,974 | 283,080
Securities available for sale | 734,845 | 608,233
Mortgage banking derivative | 1,182 | 198
Interest rate swap derivative | 21,764 | 7,263
Total assets | 757,791 | 615,694
Liabilities |  |
Mortgage banking derivative | 111 | 14
Interest rate swap derivative | 21,794 | 7,860
Total liabilities | 21,905 | 7,874
Level 1 | Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
U.S. government sponsored agency securities | 0 |
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 |  |
U.S. government sponsored agency securities | 36,487 |
Mortgage-backed securities: residential | 279,503 | 288,181
Mortgage-backed securities: commercial | 36,881 | 36,972
State and municipal securities | 381,834 | 282,935
Securities available for sale | 734,705 | 608,088
Mortgage banking derivative | 1,182 | 198
Interest rate swap derivative | 21,764 | 7,263
Total assets | 757,651 | 615,549
Liabilities |  |
Mortgage banking derivative | 111 | 14
Interest rate swap derivative | 21,794 | 7,860
Total liabilities | 21,905 | 7,874
Level 3 | Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
U.S. government sponsored agency securities | 0 |
Mortgage-backed securities: residential | 0 | 0
Mortgage-backed securities: commercial | 0 | 0
State and municipal securities | 140 | 145
Securities available for sale | 140 | 145
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total assets | 140 | 145
Liabilities |  |
Mortgage banking derivative | 0 | 0
Interest rate swap derivative | 0 | 0
Total liabilities | $ 0 | $ 0

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- Definition Fair value disclosure of debt securities issued by United States government agency such as Government National Mortgage Association (Ginnie Mae), Federal Home Loan Mortgage Corporation(Freddie Mac), and Federal National Mortgage Association (Fannie Mae), which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. + References No definition available. + Details
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