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.