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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, 2020 | Dec. 31, 2019
--- | --- | ---
Financial assets: |  |  |
Loans held for sale |  | $ 28,356 | $ 11,915
Available-for-sale Securities |  | 960,131 | 918,118
Obligations of states and political subdivisions |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 126,880 | 118,083
Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 488,049 | 463,386
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 334,615 | 325,905
Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Loans held for sale |  | 27,730 | 11,854
Customer loan swaps |  | 45,220 |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  |  | 8,187
Customer loan swaps |  | 30 |
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 126,880 | 118,083
Fair Value, Measurements, Recurring | Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 488,049 | 463,386
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 334,615 | 325,905
Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 10,587 | 10,744
Fair Value, Measurements, Recurring | Equity investments |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 1,674 | 1,674
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 |  | 27,730 | 11,854
Customer loan swaps |  | 45,220 |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  |  | 8,187
Customer loan swaps |  | 30 |
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Obligations of states and political subdivisions |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 126,880 | 118,083
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 |  | 488,049 | 463,386
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 |  | 334,615 | 325,905
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Corporate Bond Securities [Member] |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 10,587 | 10,744
Observable Market Data (Level 2) | Fair Value, Measurements, Recurring | Equity investments |  |  |
Financial assets: |  |  |
Available-for-sale Securities |  | 1,674 | 1,674
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 Swap On Loans [Member] | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | 5,591 | 483
Interest Rate Swap On Loans [Member] | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | 5,591 | 483
Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Customer loan swaps |  | 2,241 | 480
Financial liabilities: |  |  |
Customer loan swaps |  | 264 | 18
Interest Rate Lock Commitments [Member] | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Customer loan swaps |  | 2,241 | 480
Financial liabilities: |  |  |
Customer loan swaps |  | 264 | 18
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 |  | 1,185 | 312
Financial liabilities: |  |  |
Customer loan swaps |  |  | 15
Forward Contracts [Member] | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Customer loan swaps |  | 1,185 | 312
Financial liabilities: |  |  |
Customer loan swaps |  |  | 15
Interest rate swaps | Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Customer loan swaps |  |  | 17,756
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | 12,642 |
Customer loan swaps |  |  | 17,756
Interest rate swaps | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |  |
Financial assets: |  |  |
Customer loan swaps |  |  | 17,756
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | 12,642 |
Customer loan swaps |  |  | $ 17,756
Customer Loan Swaps | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Customer loan swaps |  | 45,220 |
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 |  | 45,220 |
Customer Loan Swaps | Company Determined Fair Value (Level 3) | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Customer loan swaps |  | 0 |
Interest Rate Swap On Borrowings |  |  |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps | [1] | 1,615 |
Interest Rate Swap On Borrowings | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | 1,615 |
Interest Rate Swap On Borrowings | Observable Market Data (Level 2) | Fair Value, Measurements, Recurring |  |  |
Financial liabilities: |  |  |
Junior subordinated debt interest rate swaps |  | $ 1,615 |
[1] | (3)Interest rate swap contracts were completed with same dealer bank. The Company maintains a master netting arrangement and settles collateral requested or pledged on a net basis for all contracts.

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