SECURITIES (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Amortized Cost, Available for sale:
Within One Year	$ 16,123,000
After One But Within Five Years	38,237,000
After Five But Within Ten Years	178,811,000
After Ten Years	291,358,000
Total	524,529,000	431,931,000
Fair Value, Available for sale:
Within One Year	16,160,000
After One But Within Five Years	39,235,000
After Five But Within Ten Years	179,448,000
After Ten Years	294,227,000
Estimated Fair Value	529,070,000	441,439,000
Amortized Cost, Held to maturity:
Within One Year	50,362,000
After One But Within Five Years	47,879,000
After Five But Within Ten Years	22,337,000
After Ten Years	90,157,000
Total	210,735,000	169,153,000
Fair Value, Held to maturity:
Within One Year	50,390,000
After One But Within Five Years	48,083,000
After Five But Within Ten Years	23,226,000
After Ten Years	92,003,000
Estimated Fair Value	213,702,000	170,952,000
Amortized Cost, Total securities
Within One Year	66,485,000
After One But Within Five Years	86,116,000
After Five But Within Ten Years	201,148,000
After Ten Years	381,515,000
Estimated Fair Value	735,264,000	601,084,000
Fair Value, Total securities
Within One Year	66,550,000
After One But Within Five Years	87,318,000
After Five But Within Ten Years	202,674,000
After Ten Years	386,230,000
Total securities	742,772,000	612,391,000
Securities
Proceeds from sales of securities available for sale	151,959,000	14,084,000	31,446,000
Gross gains realized on sale of securities available for sale	3,200,000	100,000	1,300,000
Gross losses on sale of securities available for sale	600,000	10,000
Fair value of securities pledged to secure public deposits and FHLB and FRB overnight borrowings	333,000,000	287,800,000
U.S. GSE securities
Amortized Cost, Available for sale:
After One But Within Five Years	539,000
After Five But Within Ten Years	137,824,000
After Ten Years	40,058,000
Total	178,421,000	130,708,000
Fair Value, Available for sale:
After One But Within Five Years	568,000
After Five But Within Ten Years	137,880,000
After Ten Years	40,004,000
Estimated Fair Value	178,452,000	131,674,000
Amortized Cost, Held to maturity:
After Five But Within Ten Years	4,992,000
Total	4,992,000
Fair Value, Held to maturity:
After Five But Within Ten Years	5,016,000
Estimated Fair Value	5,016,000
State and municipal obligations
Amortized Cost, Available for sale:
Within One Year	16,123,000
After One But Within Five Years	37,165,000
After Five But Within Ten Years	5,123,000
After Ten Years	456,000
Total	58,867,000	52,861,000
Fair Value, Available for sale:
Within One Year	16,160,000
After One But Within Five Years	38,099,000
After Five But Within Ten Years	5,227,000
After Ten Years	477,000
Estimated Fair Value	59,963,000	54,219,000
Amortized Cost, Held to maturity:
Within One Year	50,362,000
After One But Within Five Years	25,058,000
After Five But Within Ten Years	6,270,000
After Ten Years	17,062,000
Total	98,752,000	104,314,000
Fair Value, Held to maturity:
Within One Year	50,390,000
After One But Within Five Years	25,459,000
After Five But Within Ten Years	6,756,000
After Ten Years	18,357,000
Estimated Fair Value	100,962,000	106,357,000
U.S. GSE residential mortgage-backed securities
Amortized Cost, Available for sale:
After One But Within Five Years	533,000
After Five But Within Ten Years	9,314,000
After Ten Years	9,615,000
Total	19,462,000	67,317,000
Fair Value, Available for sale:
After One But Within Five Years	568,000
After Five But Within Ten Years	9,831,000
After Ten Years	10,198,000
Estimated Fair Value	20,597,000	70,984,000
Amortized Cost, Held to maturity:
After Ten Years	9,483,000
Total	9,483,000
Fair Value, Held to maturity:
After Ten Years	9,509,000
Estimated Fair Value	9,509,000
U.S. GSE residential collateralized mortgage obligations
Amortized Cost, Available for sale:
After Five But Within Ten Years	15,422,000
After Ten Years	208,804,000
Total	224,226,000	175,878,000
Fair Value, Available for sale:
After Five But Within Ten Years	15,401,000
After Ten Years	211,045,000
Estimated Fair Value	226,446,000	179,325,000
Amortized Cost, Held to maturity:
After Five But Within Ten Years	751,000
After Ten Years	58,637,000
Total	59,388,000	42,081,000
Fair Value, Held to maturity:
After Five But Within Ten Years	780,000
After Ten Years	58,908,000
Estimated Fair Value	59,688,000	43,164,000
U.S. GSE commercial mortgage-backed securities
Amortized Cost, Available for sale:
After Five But Within Ten Years	3,132,000
Total	3,132,000
Fair Value, Available for sale:
After Five But Within Ten Years	3,138,000
Estimated Fair Value	3,138,000
Amortized Cost, Held to maturity:
After Five But Within Ten Years	10,324,000
Total	10,324,000
Fair Value, Held to maturity:
After Five But Within Ten Years	10,674,000
Estimated Fair Value	10,674,000
U.S. GSE commercial collateralized mortgage obligations
Amortized Cost, Available for sale:
After Ten Years	9,079,000
Total	9,079,000	5,167,000
Fair Value, Available for sale:
After Ten Years	9,357,000
Estimated Fair Value	9,357,000	5,237,000
Amortized Cost, Held to maturity:
After Ten Years	4,975,000
Total	4,975,000
Fair Value, Held to maturity:
After Ten Years	5,229,000
Estimated Fair Value	5,229,000
Non Agency commercial mortgage-backed securities
Amortized Cost, Available for sale:
After Ten Years	4,754,000
Total	4,754,000
Fair Value, Available for sale:
After Ten Years	4,989,000
Estimated Fair Value	4,989,000
Other Asset backed securities
Amortized Cost, Available for sale:
After Five But Within Ten Years	7,996,000
After Ten Years	18,592,000
Total	26,588,000
Fair Value, Available for sale:
After Five But Within Ten Years	7,971,000
After Ten Years	18,157,000
Estimated Fair Value	26,128,000
Corporate Bonds
Amortized Cost, Held to maturity:
After One But Within Five Years	22,821,000
Total	22,821,000	22,758,000
Fair Value, Held to maturity:
After One But Within Five Years	22,624,000
Estimated Fair Value	$ 22,624,000	$ 21,431,000