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FAIR VALUE MEASUREMENT AND DISCLOSURE (Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financial assets: |  |
Loans held for sale | $ 8,711 | $ 4,314
Available-for-sale Securities | 924,311 | 910,692
Obligations of states and political subdivisions |  |
Financial assets: |  |
Available-for-sale Securities | 93,020 | 93,752
Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 448,821 | 453,672
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 361,400 | 342,894
Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Loans held for sale | 8,795 | 4,403
Customer loan swaps | 7,722 |
Financial liabilities: |  |
Junior subordinated debt interest rate swaps |  | 5,682
Customer loan swaps | 31 |
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions |  |
Financial assets: |  |
Available-for-sale Securities | 93,020 | 93,752
Fair Value, Measurements, Recurring | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 448,821 | 453,672
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 361,400 | 342,894
Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |
Financial assets: |  |
Available-for-sale Securities | 21,070 | 20,374
Fair Value, Measurements, Recurring | Equity investments |  |
Financial assets: |  |
Available-for-sale Securities | 988 | 746
Readily Available Market Prices (Level 1) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Loans held for sale | 0 | 0
Readily Available Market Prices (Level 1) | Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |
Financial assets: |  |
Available-for-sale Securities | 0 | 0
Readily Available Market Prices (Level 1) | Fair Value, Measurements, Recurring | Equity investments |  |
Financial assets: |  |
Available-for-sale Securities | 0 | 0
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Loans held for sale | 8,795 | 4,403
Customer loan swaps | 7,722 |
Financial liabilities: |  |
Junior subordinated debt interest rate swaps |  | 5,682
Customer loan swaps | 31 |
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Obligations of states and political subdivisions |  |
Financial assets: |  |
Available-for-sale Securities | 93,020 | 93,752
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 448,821 | 453,672
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |
Financial assets: |  |
Available-for-sale Securities | 361,400 | 342,894
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |
Financial assets: |  |
Available-for-sale Securities | 21,070 | 20,374
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Equity investments |  |
Financial assets: |  |
Available-for-sale Securities | 988 | 746
Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Loans held for sale | 0 | 0
Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |
Financial assets: |  |
Available-for-sale Securities | 0 | 0
Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring | Equity investments |  |
Financial assets: |  |
Available-for-sale Securities | 0 | 0
Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps | 293 | 95
Financial liabilities: |  |
Customer loan swaps | 45 | 28
Interest Rate Lock Commitments [Member] | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps | 293 | 95
Financial liabilities: |  |
Customer loan swaps | 45 | 28
Interest Rate Lock Commitments [Member] | Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Customer loan swaps | 0 | 0
Forward Contracts [Member] | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps | 129 | 32
Financial liabilities: |  |
Customer loan swaps |  | 17
Forward Contracts [Member] | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps | 129 | 32
Financial liabilities: |  |
Customer loan swaps |  | 17
Interest rate swaps | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps |  | 7,841
Financial liabilities: |  |
Junior subordinated debt interest rate swaps | 6,711 |
Customer loan swaps |  | 7,841
Interest rate swaps | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Customer loan swaps |  | 7,841
Financial liabilities: |  |
Junior subordinated debt interest rate swaps | 6,711 |
Customer loan swaps |  | 7,841
Forward-Starting Interest Rate Swap | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Junior subordinated debt interest rate swaps |  | 30
Forward-Starting Interest Rate Swap | Readily Available Market Prices (Level 1) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Junior subordinated debt interest rate swaps |  | 0
Forward-Starting Interest Rate Swap | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Junior subordinated debt interest rate swaps |  | $ 30
Customer Loan Swaps | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Customer loan swaps | 7,722 |
Customer Loan Swaps | Readily Available Market Prices (Level 1) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Customer loan swaps | 0 |
Customer Loan Swaps | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Customer loan swaps | 7,722 |
Customer Loan Swaps | Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring |  |
Financial liabilities: |  |
Customer loan swaps | $ 0 |

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