FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 817,434,000	$ 893,956,000
Impaired Loans	8,510,000	9,484,000	3,286,000
Impaired loan discussion [Abstract]
Principal balance	8,510,000	9,484,000	3,286,000
Valuation allowance	567,000	1,034,000	897,000
Recorded provisions for loan losses	26,000	339,000
Financial Liabilities [Abstract]
Checking deposits	528,940,000	435,517,000
Savings, NOW and money market deposits	844,583,000	796,009,000
Time deposits	259,553,000
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	42,191,000	29,495,000
Restricted stock	13,104,000	12,284,000
Financial Liabilities [Abstract]
Checking deposits	528,940,000	435,517,000
Savings, NOW and money market deposits	844,583,000	796,009,000
Short-term borrowings	103,634,000	102,227,000
Accrued interest payable [Abstract]
Checking, savings, NOW and money market deposits	740,000	507,000
Accrued interest payable on short term borrowings	1,000	2,000
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	42,191,000	29,495,000
Restricted stock	13,104,000	12,284,000
Financial Liabilities [Abstract]
Checking deposits	528,940,000	435,517,000
Savings, NOW and money market deposits	844,583,000	796,009,000
Short-term borrowings	103,634,000	102,227,000
Accrued interest payable [Abstract]
Checking, savings, NOW and money market deposits	740,000	507,000
Accrued interest payable on short term borrowings	1,000	2,000
Significant Other Observable Inputs (Level 2) [Member] | Carrying Amount [Member]
Financial Assets [Abstract]
Held-to-maturity securities	43,362,000	60,970,000
Accrued interest receivable [Abstract]
Investment securities	4,943,000	5,621,000
Financial Liabilities [Abstract]
Time deposits	259,553,000	271,342,000
Accrued interest payable [Abstract]
Accrued interest payable on time deposits	3,828,000	2,902,000
Accrued interest payable on long term debt	379,000	787,000
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Held-to-maturity securities	46,153,000	64,962,000
Accrued interest receivable [Abstract]
Investment securities	4,943,000	5,621,000
Financial Liabilities [Abstract]
Time deposits	268,907,000	280,791,000
Accrued interest payable [Abstract]
Accrued interest payable on time deposits	3,828,000	2,902,000
Accrued interest payable on long term debt	379,000	787,000
Significant Unobservable Inputs (Level 3) [Member] | Carrying Amount [Member]
Financial Assets [Abstract]
Held-to-maturity securities	805,000	1,115,000
Loans	1,126,831,000	967,975,000
Accrued interest receivable [Abstract]
Loans	3,332,000	3,401,000
Financial Liabilities [Abstract]
Long-term debt	145,000,000	207,500,000
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Held-to-maturity securities	805,000	1,115,000
Loans	1,140,731,000	989,785,000
Accrued interest receivable [Abstract]
Loans	3,332,000	3,401,000
Financial Liabilities [Abstract]
Long-term debt	154,050,000	223,731,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US government agencies	0	5,113,000
State and municipals	332,513,000	313,195,000
Pass-through mortgage securities	84,956,000	73,786,000
Collateralized mortgage obligations	399,965,000	501,862,000
Available-for-sale Securities	817,434,000	893,956,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US government agencies	0	0
State and municipals	0	0
Pass-through mortgage securities	0	0
Collateralized mortgage obligations	0	0
Available-for-sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US government agencies	0	5,113,000
State and municipals	332,513,000	313,195,000
Pass-through mortgage securities	84,956,000	73,786,000
Collateralized mortgage obligations	399,965,000	501,862,000
Available-for-sale Securities	817,434,000	893,956,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US government agencies	0	0
State and municipals	0	0
Pass-through mortgage securities	0	0
Collateralized mortgage obligations	0	0
Available-for-sale Securities	0	0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	1,929,000	1,312,000
Impaired loan discussion [Abstract]
Principal balance	2,248,000	1,651,000
Valuation allowance	319,000	339,000
Fair Value, Measurements, Nonrecurring [Member] | Residential mortgages - closed end [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	1,929,000	507,000
Fair Value, Measurements, Nonrecurring [Member] | Commercial mortgages - multifamily [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	805,000
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Residential mortgages - closed end [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Commercial mortgages - multifamily [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Residential mortgages - closed end [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commercial mortgages - multifamily [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	1,929,000	1,312,000
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Residential mortgages - closed end [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	1,929,000	507,000
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commercial mortgages - multifamily [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	$ 0	$ 805,000