LOANS (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011
Loans
Loans	$ 3,418,392,000	$ 3,418,392,000	$ 2,956,570,000
Activity in the accretable yield for the acquired loan portfolio
Balance at beginning of period	2,554,000	1,277,000
Acquisitions		2,816,000
Accretion	(806,000)	(2,345,000)
Balance at end of period	1,748,000	1,748,000
Loans from Business Activities
Loans
Loans	2,632,083,000	2,632,083,000	2,262,251,000
Loans Acquired from Business Combinations
Loans
Loans	786,309,000	786,309,000	694,319,000
Carrying amount of loans considered impaired at the acquisition date	26,400,000	26,400,000
Carrying amount of loans not considered impaired at the acquisition date	759,900,000	759,900,000
Residential mortgages
Loans
Loans	1,226,022,000	1,226,022,000	1,020,435,000
Residential mortgages \| Loans from Business Activities
Loans
Loans	929,284,000	929,284,000	681,658,000
Residential mortgages \| Loans Acquired from Business Combinations
Loans
Loans	296,738,000	296,738,000	338,777,000
Commercial mortgages
Loans
Loans	1,255,172,000	1,255,172,000	1,156,241,000
Commercial mortgages \| Loans from Business Activities
Loans
Loans	960,456,000	960,456,000	953,438,000
Commercial mortgages \| Loans Acquired from Business Combinations
Loans
Loans	294,716,000	294,716,000	202,803,000
Commercial business loans
Loans
Loans	568,781,000	568,781,000	410,292,000
Commercial business loans \| Loans from Business Activities
Loans
Loans	475,512,000	475,512,000	361,766,000
Commercial business loans \| Loans Acquired from Business Combinations
Loans
Loans	93,269,000	93,269,000	48,526,000
Commercial loans
Loans
Loans	1,823,953,000	1,823,953,000	1,566,533,000
Commercial loans \| Loans from Business Activities
Loans
Loans	1,435,968,000	1,435,968,000	1,315,204,000
Commercial loans \| Loans Acquired from Business Combinations
Loans
Loans	387,985,000	387,985,000	251,329,000
Consumer loans
Loans
Loans	368,417,000	368,417,000	369,602,000
Consumer loans \| Loans from Business Activities
Loans
Loans	266,831,000	266,831,000	265,389,000
Consumer loans \| Loans Acquired from Business Combinations
Loans
Loans	101,586,000	101,586,000	104,213,000
1-4 family \| Residential mortgages
Loans
Loans	1,192,452,000	1,192,452,000	978,874,000
1-4 family \| Residential mortgages \| Loans from Business Activities
Loans
Loans	902,661,000	902,661,000	649,467,000
1-4 family \| Residential mortgages \| Loans Acquired from Business Combinations
Loans
Loans	289,791,000	289,791,000	329,407,000
Construction \| Residential mortgages
Loans
Loans	33,570,000	33,570,000	41,561,000
Construction \| Residential mortgages \| Loans from Business Activities
Loans
Loans	26,623,000	26,623,000	32,191,000
Construction \| Residential mortgages \| Loans Acquired from Business Combinations
Loans
Loans	6,947,000	6,947,000	9,370,000
Construction \| Commercial mortgages
Loans
Loans	155,872,000	155,872,000	124,218,000
Construction \| Commercial mortgages \| Loans from Business Activities
Loans
Loans	145,494,000	145,494,000	117,492,000
Construction \| Commercial mortgages \| Loans Acquired from Business Combinations
Loans
Loans	10,378,000	10,378,000	6,726,000
Single and multi-family \| Commercial mortgages
Loans
Loans	90,978,000	90,978,000	105,799,000
Single and multi-family \| Commercial mortgages \| Loans from Business Activities
Loans
Loans	77,470,000	77,470,000	89,401,000
Single and multi-family \| Commercial mortgages \| Loans Acquired from Business Combinations
Loans
Loans	13,508,000	13,508,000	16,398,000
Commercial real estate \| Commercial mortgages
Loans
Loans	1,008,322,000	1,008,322,000	926,224,000
Commercial real estate \| Commercial mortgages \| Loans from Business Activities
Loans
Loans	737,492,000	737,492,000	746,545,000
Commercial real estate \| Commercial mortgages \| Loans Acquired from Business Combinations
Loans
Loans	270,830,000	270,830,000	179,679,000
Asset based lending \| Commercial business loans
Loans
Loans	245,691,000	245,691,000	153,271,000
Asset based lending \| Commercial business loans \| Loans from Business Activities
Loans
Loans	243,126,000	243,126,000	151,065,000
Asset based lending \| Commercial business loans \| Loans Acquired from Business Combinations
Loans
Loans	2,565,000	2,565,000	2,206,000
Other commercial business loans \| Commercial business loans
Loans
Loans	323,090,000	323,090,000	257,021,000
Other commercial business loans \| Commercial business loans \| Loans from Business Activities
Loans
Loans	232,386,000	232,386,000	210,701,000
Other commercial business loans \| Commercial business loans \| Loans Acquired from Business Combinations
Loans
Loans	90,704,000	90,704,000	46,320,000
Home equity \| Consumer loans
Loans
Loans	302,057,000	302,057,000	298,196,000
Home equity \| Consumer loans \| Loans from Business Activities
Loans
Loans	228,497,000	228,497,000	226,369,000
Home equity \| Consumer loans \| Loans Acquired from Business Combinations
Loans
Loans	73,560,000	73,560,000	71,827,000
Other \| Consumer loans
Loans
Loans	66,360,000	66,360,000	71,406,000
Other \| Consumer loans \| Loans from Business Activities
Loans
Loans	38,334,000	38,334,000	39,020,000
Other \| Consumer loans \| Loans Acquired from Business Combinations
Loans
Loans	$ 28,026,000	$ 28,026,000	$ 32,386,000

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, due to the acquisition of similar loans not accounted for as debt securities during the period.

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- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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