LOANS (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Past due loans
Total loans	$ 4,680,600,000	$ 4,180,523,000
Business Activity
Past due loans
30-59 Days Past Due	9,320,000	5,827,000
60-89 Days Past Due	4,980,000	6,749,000
Greater Than 90 Days Past Due	17,172,000	21,712,000
Total Past Due	31,472,000	34,288,000
Current	3,887,408,000	3,134,903,000
Total loans	3,918,880,000	3,169,191,000
Past Due > 90 days and Accruing	2,394,000	3,240,000
Acquired Loans
Past due loans
30-59 Days Past Due	2,958,000	6,383,000
60-89 Days Past Due	2,424,000	2,496,000
Greater Than 90 Days Past Due	8,185,000	10,762,000
Total Past Due	13,567,000	19,641,000
Current	13,809,000	29,899,000
Acquired Credit Impaired	13,800,000	29,900,000
Total loans	761,720,000	1,011,332,000
Past Due > 90 days and Accruing	1,258,000	1,778,000
Other commercial and industrial loans
Past due loans
Acquired Credit Impaired	986,000	3,000,000
Residential | Mortgages
Past due loans
Acquired Credit Impaired	375,000	329,000
Total loans	1,496,204,000	1,384,274,000
Residential | Mortgages | Business Activity
Past due loans
30-59 Days Past Due	6,246,000	2,500,000
60-89 Days Past Due	556,000	623,000
Greater Than 90 Days Past Due	4,053,000	7,423,000
Total Past Due	10,855,000	10,546,000
Current	1,215,597,000	1,035,349,000
Total loans	1,226,452,000	1,045,895,000
Past Due > 90 days and Accruing	1,527,000	1,451,000
Residential | Mortgages | Acquired Loans
Past due loans
30-59 Days Past Due	1,133,000	2,025,000
60-89 Days Past Due	638,000	469,000
Greater Than 90 Days Past Due	1,651,000	3,132,000
Total Past Due	3,422,000	5,626,000
Acquired Credit Impaired	375,000	329,000
Total loans	269,752,000	338,379,000
Past Due > 90 days and Accruing	269,000	1,236,000
Residential | Mortgages | 1-4 family
Past due loans
Total loans	1,468,142,000	1,361,104,000
Residential | Mortgages | 1-4 family | Business Activity
Past due loans
30-59 Days Past Due	5,580,000	2,500,000
60-89 Days Past Due	146,000	623,000
Greater Than 90 Days Past Due	4,053,000	7,382,000
Total Past Due	9,779,000	10,505,000
Current	1,189,629,000	1,017,232,000
Total loans	1,199,408,000	1,027,737,000
Past Due > 90 days and Accruing	1,527,000	1,451,000
Residential | Mortgages | 1-4 family | Acquired Loans
Past due loans
30-59 Days Past Due	1,133,000	1,891,000
60-89 Days Past Due	638,000	437,000
Greater Than 90 Days Past Due	1,651,000	2,507,000
Total Past Due	3,422,000	4,835,000
Acquired Credit Impaired	375,000	329,000
Total loans	268,734,000	333,367,000
Past Due > 90 days and Accruing	269,000	735,000
Residential | Mortgages | Construction
Past due loans
Total loans	28,062,000	23,170,000
Residential | Mortgages | Construction | Business Activity
Past due loans
30-59 Days Past Due	666,000
60-89 Days Past Due	410,000
Greater Than 90 Days Past Due		41,000
Total Past Due	1,076,000	41,000
Current	25,968,000	18,117,000
Total loans	27,044,000	18,158,000
Residential | Mortgages | Construction | Acquired Loans
Past due loans
30-59 Days Past Due		134,000
60-89 Days Past Due		32,000
Greater Than 90 Days Past Due		625,000
Total Past Due		791,000
Total loans	1,018,000	5,012,000
Past Due > 90 days and Accruing		501,000
Commercial real estate
Past due loans
Acquired Credit Impaired	12,300,000	26,500,000
Total loans	1,611,567,000	1,417,120,000
Commercial real estate | Business Activity
Past due loans
30-59 Days Past Due	870,000	935,000
60-89 Days Past Due	2,861,000	5,455,000
Greater Than 90 Days Past Due	10,561,000	10,767,000
Total Past Due	14,292,000	17,157,000
Current	1,325,784,000	1,042,854,000
Total loans	1,340,076,000	1,060,011,000
Past Due > 90 days and Accruing	621,000	1,033,000
Commercial real estate | Acquired Loans
Past due loans
30-59 Days Past Due	277,000	887,000
60-89 Days Past Due	715,000	706,000
Greater Than 90 Days Past Due	3,267,000	4,278,000
Total Past Due	4,259,000	5,871,000
Acquired Credit Impaired	12,277,000	26,534,000
Total loans	271,491,000	357,109,000
Past Due > 90 days and Accruing	329,000	272,000
Commercial real estate | Construction
Past due loans
Total loans	173,390,000	139,017,000
Commercial real estate | Construction | Business Activity
Past due loans
30-59 Days Past Due		174,000
60-89 Days Past Due	2,000,000
Greater Than 90 Days Past Due	720,000	3,176,000
Total Past Due	2,720,000	3,350,000
Current	166,469,000	121,897,000
Total loans	169,189,000	125,247,000
Commercial real estate | Construction | Acquired Loans
Past due loans
Greater Than 90 Days Past Due	691,000
Total Past Due	691,000
Acquired Credit Impaired	1,296,000	6,616,000
Total loans	4,201,000	13,770,000
Commercial real estate | Single and multi-family
Past due loans
Total loans	193,218,000	128,320,000
Commercial real estate | Single and multi-family | Business Activity
Past due loans
30-59 Days Past Due	178,000	139,000
60-89 Days Past Due	156,000	654,000
Greater Than 90 Days Past Due	458,000	679,000
Total Past Due	792,000	1,472,000
Current	139,258,000	62,021,000
Total loans	140,050,000	63,493,000
Past Due > 90 days and Accruing		168,000
Commercial real estate | Single and multi-family | Acquired Loans
Past due loans
30-59 Days Past Due	277,000	350,000
60-89 Days Past Due		188,000
Greater Than 90 Days Past Due	572,000	823,000
Total Past Due	849,000	1,361,000
Acquired Credit Impaired	5,477,000	9,666,000
Total loans	53,168,000	64,827,000
Commercial real estate | Other commercial real estate
Past due loans
Total loans	1,244,959,000	1,149,783,000
Commercial real estate | Other commercial real estate | Business Activity
Past due loans
30-59 Days Past Due	692,000	622,000
60-89 Days Past Due	705,000	4,801,000
Greater Than 90 Days Past Due	9,383,000	6,912,000
Total Past Due	10,780,000	12,335,000
Current	1,020,057,000	858,936,000
Total loans	1,030,837,000	871,271,000
Past Due > 90 days and Accruing	621,000	865,000
Commercial real estate | Other commercial real estate | Acquired Loans
Past due loans
30-59 Days Past Due		537,000
60-89 Days Past Due	715,000	518,000
Greater Than 90 Days Past Due	2,004,000	3,455,000
Total Past Due	2,719,000	4,510,000
Acquired Credit Impaired	5,504,000	10,252,000
Total loans	214,122,000	278,512,000
Past Due > 90 days and Accruing	329,000	272,000
Commercial real estate | Business loans
Past due loans
Total loans	804,366,000	687,293,000
Commercial real estate | Business loans | Business Activity
Past due loans
30-59 Days Past Due	1,040,000	1,136,000
60-89 Days Past Due	498,000	386,000
Greater Than 90 Days Past Due	856,000	1,477,000
Total Past Due	2,394,000	2,999,000
Current	750,797,000	614,438,000
Total loans	753,191,000	617,437,000
Past Due > 90 days and Accruing	6,000	42,000
Commercial real estate | Business loans | Acquired Loans
Past due loans
30-59 Days Past Due	202,000	440,000
60-89 Days Past Due	32,000	135,000
Greater Than 90 Days Past Due	855,000	1,074,000
Total Past Due	1,089,000	1,649,000
Acquired Credit Impaired	986,000	3,036,000
Total loans	51,175,000	69,856,000
Past Due > 90 days and Accruing		153,000
Commercial real estate | Business loans | Asset based lending
Past due loans
Total loans	341,246,000	297,371,000
Commercial real estate | Business loans | Asset based lending | Business Activity
Past due loans
Current	341,246,000	294,241,000
Total loans	341,246,000	294,241,000
Commercial real estate | Business loans | Asset based lending | Acquired Loans
Past due loans
Total loans		3,130,000
Commercial real estate | Business loans | Other commercial and industrial loans
Past due loans
Total loans	463,120,000	389,922,000
Commercial real estate | Business loans | Other commercial and industrial loans | Business Activity
Past due loans
30-59 Days Past Due		1,136,000
60-89 Days Past Due		386,000
Greater Than 90 Days Past Due		1,477,000
Total Past Due		2,999,000
Current		320,197,000
Total loans	411,945,000	323,196,000
Past Due > 90 days and Accruing		42,000
Commercial real estate | Business loans | Other commercial and industrial loans | Acquired Loans
Past due loans
30-59 Days Past Due	202,000	440,000
60-89 Days Past Due	32,000	135,000
Greater Than 90 Days Past Due	855,000	1,074,000
Total Past Due	1,089,000	1,649,000
Acquired Credit Impaired	986,000	3,036,000
Total loans	51,175,000	66,726,000
Past Due > 90 days and Accruing		153,000
Commercial real estate | Business loans | Other commercial real estate | Other commercial and industrial loans | Business Activity
Past due loans
30-59 Days Past Due	1,040,000
60-89 Days Past Due	498,000
Greater Than 90 Days Past Due	856,000
Total Past Due	2,394,000
Current	409,551,000
Total loans	411,945,000
Past Due > 90 days and Accruing	6,000
Commercial
Past due loans
Total loans	2,415,933,000	2,104,413,000
Commercial | Business Activity
Past due loans
Total loans	2,093,267,000	1,677,448,000
Commercial | Acquired Loans
Past due loans
Total loans	322,666,000	426,965,000
Commercial | Mortgages | Acquired Loans
Past due loans
Total loans	271,491,000	357,109,000
Commercial | Mortgages | Construction | Acquired Loans
Past due loans
Total loans	4,201,000	13,770,000
Commercial | Mortgages | Single and multi-family | Acquired Loans
Past due loans
Total loans	53,168,000	64,827,000
Commercial | Mortgages | Other commercial real estate | Acquired Loans
Past due loans
Total loans	214,122,000	278,512,000
Commercial | Business loans | Business Activity
Past due loans
Total loans	753,191,000	617,437,000
Commercial | Business loans | Acquired Loans
Past due loans
Total loans	51,175,000	69,856,000
Commercial | Business loans | Asset based lending | Business Activity
Past due loans
Total loans	341,246,000	294,241,000
Commercial | Business loans | Asset based lending | Acquired Loans
Past due loans
Total loans		3,130,000
Commercial | Business loans | Other commercial and industrial loans | Business Activity
Past due loans
Total loans	411,945,000	323,196,000
Commercial | Business loans | Other commercial and industrial loans | Acquired Loans
Past due loans
Total loans	51,175,000	66,726,000
Consumer
Past due loans
Acquired Credit Impaired	171,000
Total loans	768,463,000	691,836,000
Consumer | Business Activity
Past due loans
30-59 Days Past Due	1,164,000	1,256,000
60-89 Days Past Due	1,065,000	285,000
Greater Than 90 Days Past Due	1,702,000	2,045,000
Total Past Due	3,931,000	3,586,000
Current	595,230,000	442,262,000
Total loans	599,161,000	445,848,000
Past Due > 90 days and Accruing	240,000	714,000
Consumer | Acquired Loans
Past due loans
30-59 Days Past Due	1,346,000	3,031,000
60-89 Days Past Due	1,039,000	1,186,000
Greater Than 90 Days Past Due	2,412,000	2,278,000
Total Past Due	4,797,000	6,495,000
Acquired Credit Impaired	171,000
Total loans	169,302,000	245,988,000
Past Due > 90 days and Accruing	660,000	117,000
Consumer | Home equity
Past due loans
Total loans	318,632,000	306,831,000
Consumer | Home equity | Business Activity
Past due loans
30-59 Days Past Due	333,000	732,000
60-89 Days Past Due	1,000,000	54,000
Greater Than 90 Days Past Due	1,387,000	1,655,000
Total Past Due	2,720,000	2,441,000
Current	249,961,000	230,236,000
Total loans	252,681,000	232,677,000
Past Due > 90 days and Accruing	230,000	572,000
Consumer | Home equity | Acquired Loans
Past due loans
30-59 Days Past Due	176,000	425,000
60-89 Days Past Due	95,000	545,000
Greater Than 90 Days Past Due	1,049,000	637,000
Total Past Due	1,320,000	1,607,000
Acquired Credit Impaired	171,000
Total loans	65,951,000	74,154,000
Past Due > 90 days and Accruing	466,000	35,000
Consumer | Auto and other
Past due loans
Total loans	449,831,000	385,005,000
Consumer | Auto and other | Business Activity
Past due loans
30-59 Days Past Due	831,000	524,000
60-89 Days Past Due	65,000	231,000
Greater Than 90 Days Past Due	315,000	390,000
Total Past Due	1,211,000	1,145,000
Current	345,269,000	212,026,000
Total loans	346,480,000	213,171,000
Past Due > 90 days and Accruing	10,000	142,000
Consumer | Auto and other | Acquired Loans
Past due loans
30-59 Days Past Due	1,170,000	2,606,000
60-89 Days Past Due	944,000	641,000
Greater Than 90 Days Past Due	1,363,000	1,641,000
Total Past Due	3,477,000	4,888,000
Total loans	103,351,000	171,834,000
Past Due > 90 days and Accruing	$ 194,000	$ 82,000