SECURITIES (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Available for sale:
Less than 12 months, Fair Value	$ 124,180,000	$ 413,526,000
Less than 12 months, Unrealized losses	1,832,000	18,096,000
Greater than 12 months, Fair Value	236,138,000	40,595,000
Greater than 12 months, Unrealized losses	5,022,000	3,240,000
Held to maturity:
Less than 12 months, Fair Value	40,135,000	96,907,000
Less than 12 months, Unrealized losses	238,000	4,103,000
Greater than 12 months, Fair Value	57,397,000	19,136,000
Greater than 12 months, Unrealized losses	1,339,000	1,489,000
Total Amortized Cost Amount	807,594,000	796,395,000
Total Fair Value Amount	803,473,000	772,518,000
Other-Than-Temporary-Impairment
Proceeds from sales of securities available for sale	360,963,000	129,431,000	151,959,000
Gross losses realized on sale of securities available for sale	2,300,000	800,000	600,000
Gross gains realized on sale of securities available for sale	1,200,000	1,500,000	3,200,000
Fair value of securities pledged to secure public deposits and FHLB and FRB overnight borrowings	451,100,000	397,500,000
Amount owned in FHLB, ACBB and FRB stock	10,037,000	7,034,000
U.S. GSE securities
Available for sale:
Less than 12 months, Fair Value	4,991,000	128,468,000
Less than 12 months, Unrealized losses	8,000	8,915,000
Greater than 12 months, Fair Value	90,233,000	23,966,000
Greater than 12 months, Unrealized losses	2,131,000	2,621,000
Held to maturity:
Less than 12 months, Fair Value		10,879,000
Less than 12 months, Unrealized losses		375,000
Greater than 12 months, Fair Value	7,414,000
Greater than 12 months, Unrealized losses	41,000
State and municipal obligations
Available for sale:
Less than 12 months, Fair Value	12,330,000	23,765,000
Less than 12 months, Unrealized losses	79,000	1,046,000
Greater than 12 months, Fair Value	14,592,000	966,000
Greater than 12 months, Unrealized losses	129,000	41,000
Held to maturity:
Less than 12 months, Fair Value	11,343,000	24,079,000
Less than 12 months, Unrealized losses	97,000	178,000
Greater than 12 months, Fair Value	202,000	385,000
Greater than 12 months, Unrealized losses	1,000	1,000
U.S. GSE residential mortgage-backed securities
Available for sale:
Less than 12 months, Fair Value		10,410,000
Less than 12 months, Unrealized losses		210,000
Greater than 12 months, Fair Value	1,554,000
Greater than 12 months, Unrealized losses	40,000
Held to maturity:
Less than 12 months, Fair Value		7,689,000
Less than 12 months, Unrealized losses		312,000
Greater than 12 months, Fair Value	6,569,000
Greater than 12 months, Unrealized losses	97,000
U.S. GSE Residential collateralized mortgage Obligations
Available for sale:
Less than 12 months, Fair Value	60,126,000	218,415,000
Less than 12 months, Unrealized losses	349,000	6,476,000
Greater than 12 months, Fair Value	122,179,000	12,757,000
Greater than 12 months, Unrealized losses	2,618,000	487,000
Held to maturity:
Less than 12 months, Fair Value	10,422,000	29,570,000
Less than 12 months, Unrealized losses	46,000	2,169,000
Greater than 12 months, Fair Value	30,413,000	17,752,000
Greater than 12 months, Unrealized losses	816,000	1,486,000
U.S. GSE commercial mortgage-backed securities
Available for sale:
Less than 12 months, Fair Value		2,834,000
Less than 12 months, Unrealized losses		242,000
Greater than 12 months, Fair Value	2,944,000
Greater than 12 months, Unrealized losses	71,000
Held to maturity:
Less than 12 months, Fair Value		9,776,000
Less than 12 months, Unrealized losses		356,000
Greater than 12 months, Fair Value	4,188,000
Greater than 12 months, Unrealized losses	26,000
U.S. GSE commercial collateralized mortgage obligations
Available for sale:
Less than 12 months, Fair Value	13,830,000	4,912,000
Less than 12 months, Unrealized losses	108,000	24,000
Greater than 12 months, Fair Value	4,636,000
Greater than 12 months, Unrealized losses	33,000
Held to maturity:
Less than 12 months, Fair Value	14,392,000	12,921,000
Less than 12 months, Unrealized losses	73,000	706,000
Greater than 12 months, Fair Value	8,611,000
Greater than 12 months, Unrealized losses	358,000
Non Agency commercial mortgage-backed securities
Available for sale:
Less than 12 months, Fair Value		3,578,000
Less than 12 months, Unrealized losses		80,000
Other Asset backed securities
Available for sale:
Less than 12 months, Fair Value	23,038,000	21,144,000
Less than 12 months, Unrealized losses	1,153,000	1,103,000
Greater than 12 months, Fair Value		2,906,000
Greater than 12 months, Unrealized losses		91,000
Corporate bonds
Available for sale:
Less than 12 months, Fair Value	9,865,000
Less than 12 months, Unrealized losses	135,000
Held to maturity:
Less than 12 months, Fair Value	3,978,000	1,993,000
Less than 12 months, Unrealized losses	22,000	7,000
Greater than 12 months, Fair Value		999,000
Greater than 12 months, Unrealized losses		$ 2,000