FAIR VALUE MEASUREMENT (Schedule of Carrying Amounts and Estimated Fair Value for Financial Instrument Assets and Liabilities) (Details) - USD ($) $ in Thousands		Jun. 30, 2016		Dec. 31, 2015
Financial assets:
Cash and due from banks		$ 96,443		$ 79,488
Available-for-sale Securities		799,526		750,338
Held-to-maturity securities, at amortized cost		93,609		84,144
Held-to-maturity Securities, Fair Value		97,692		85,647
Loans held for sale		22,928		10,958
Mortgage servicing rights		1,864	[1]	2,947	[2]
Interest receivable		8,757		7,985
Customer loan swaps		15,001		3,166
Derivative Asset		523		139
Financial liabilities:
Deposits		2,776,511		2,726,300
FHLB advances		45,943		56,001
Commercial repurchase agreements		30,909		30,931
Other borrowed funds		558,059		428,778
Subordinated debentures		40,800		42,950
Interest payable		643		641
Customer loan swaps		15,001		3,166
Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	815,775		820,774
Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	993,814		911,316
Commercial
Financial assets:
Loans receivable, net of allowance	[3],[4]	405,395		371,854
Home Equity
Financial assets:
Loans receivable, net of allowance	[3]	339,449		348,963
Consumer
Financial assets:
Loans receivable, net of allowance	[3]	18,767		18,163
Readily Available Market Prices (Level 1)
Financial assets:
Cash and due from banks		96,443		79,488
Available-for-sale Securities		0		0
Held-to-maturity Securities, Fair Value		0		0
Loans held for sale		0		0
Mortgage servicing rights		0	[1]	0	[2]
Interest receivable		0		0
Customer loan swaps		0		0
Derivative Asset		0		0
Financial liabilities:
Deposits		0		0
FHLB advances		0		0
Commercial repurchase agreements		0		0
Other borrowed funds				0
Subordinated debentures		0		0
Interest payable		0		0
Customer loan swaps		0		0
Readily Available Market Prices (Level 1) | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Readily Available Market Prices (Level 1) | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Readily Available Market Prices (Level 1) | Commercial
Financial assets:
Loans receivable, net of allowance	[3],[4]	0		0
Readily Available Market Prices (Level 1) | Home Equity
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Readily Available Market Prices (Level 1) | Consumer
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Observable Market Data (Level 2)
Financial assets:
Cash and due from banks		0		0
Available-for-sale Securities		799,526		750,338
Held-to-maturity Securities, Fair Value		97,692		85,647
Loans held for sale		22,928		10,958
Mortgage servicing rights		1,864	[1]	2,947	[2]
Interest receivable		8,757		7,985
Customer loan swaps		15,001		3,166
Derivative Asset		523		139
Financial liabilities:
Deposits		2,776,511		2,726,300
FHLB advances		45,943		56,001
Commercial repurchase agreements		30,909		30,931
Other borrowed funds		558,059		428,778
Subordinated debentures		40,800		42,950
Interest payable		643		641
Customer loan swaps		15,001		3,166
Observable Market Data (Level 2) | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Observable Market Data (Level 2) | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Observable Market Data (Level 2) | Commercial
Financial assets:
Loans receivable, net of allowance	[3],[4]	0		0
Observable Market Data (Level 2) | Home Equity
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Observable Market Data (Level 2) | Consumer
Financial assets:
Loans receivable, net of allowance	[3]	0		0
Company Determined Fair Value (Level 3)
Financial assets:
Cash and due from banks		0		0
Available-for-sale Securities		0		0
Held-to-maturity Securities, Fair Value		0		0
Loans held for sale		0		0
Mortgage servicing rights		0	[1]	0	[2]
Interest receivable		0		0
Customer loan swaps		0		0
Derivative Asset		0		0
Financial liabilities:
Deposits		0		0
FHLB advances		0		0
Commercial repurchase agreements		0		0
Other borrowed funds		0		0
Subordinated debentures		0		0
Interest payable		0		0
Customer loan swaps		0		0
Company Determined Fair Value (Level 3) | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	815,775		820,774
Company Determined Fair Value (Level 3) | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	993,814		911,316
Company Determined Fair Value (Level 3) | Commercial
Financial assets:
Loans receivable, net of allowance	[3],[4]	405,395		371,854
Company Determined Fair Value (Level 3) | Home Equity
Financial assets:
Loans receivable, net of allowance	[3]	339,449		348,963
Company Determined Fair Value (Level 3) | Consumer
Financial assets:
Loans receivable, net of allowance	[3]	18,767		18,163
Carrying Amount
Financial assets:
Cash and due from banks		96,443		79,488
Available-for-sale Securities		799,526		750,338
Held-to-maturity securities, at amortized cost		93,609		84,144
Loans held for sale		22,928		10,958
Mortgage servicing rights		1,410	[1]	2,161	[2]
Interest receivable		8,757		7,985
Customer loan swaps		15,001		3,166
Derivative Asset		523		139
Financial liabilities:
Deposits		2,773,487		2,726,379
FHLB advances		45,000		55,000
Commercial repurchase agreements		30,030		30,052
Other borrowed funds		556,769		428,711
Subordinated debentures		58,677		58,599
Interest payable		643		641
Customer loan swaps		15,001		3,166
Carrying Amount | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	796,125		808,180
Carrying Amount | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[3]	1,006,218		922,257
Carrying Amount | Commercial
Financial assets:
Loans receivable, net of allowance	[3],[4]	402,580		371,684
Carrying Amount | Home Equity
Financial assets:
Loans receivable, net of allowance	[3]	339,035		349,215
Carrying Amount | Consumer
Financial assets:
Loans receivable, net of allowance	[3]	17,625		17,704
Interest rate swaps
Financial liabilities:
Junior subordinated debt interest rate swaps		13,265		9,229
Interest rate swaps | Readily Available Market Prices (Level 1)
Financial liabilities:
Junior subordinated debt interest rate swaps		0		0
Interest rate swaps | Observable Market Data (Level 2)
Financial liabilities:
Junior subordinated debt interest rate swaps		13,265		9,229
Interest rate swaps | Company Determined Fair Value (Level 3)
Financial liabilities:
Junior subordinated debt interest rate swaps		0		0
Interest rate swaps | Carrying Amount
Financial liabilities:
Junior subordinated debt interest rate swaps		13,265		9,229
Forward-Starting Interest Rate Swap
Financial liabilities:
Junior subordinated debt interest rate swaps		1,172		576
Forward-Starting Interest Rate Swap | Readily Available Market Prices (Level 1)
Financial liabilities:
Junior subordinated debt interest rate swaps		0		0
Forward-Starting Interest Rate Swap | Observable Market Data (Level 2)
Financial liabilities:
Junior subordinated debt interest rate swaps		1,172		576
Forward-Starting Interest Rate Swap | Company Determined Fair Value (Level 3)
Financial liabilities:
Junior subordinated debt interest rate swaps		0		0
Forward-Starting Interest Rate Swap | Carrying Amount
Financial liabilities:
Junior subordinated debt interest rate swaps		$ 1,172		$ 576

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[3] (1)The presented carrying amount is net of the allocated ALL.

[4] (2) Includes the HPFC loan portfolio.