LOANS (excluding covered loans) - Nonaccrual, Restructured and Impaired Loans (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Restructured loans - nonaccrual status	$ 13,000,000		$ 13,000,000		$ 14,100,000
Interest included in income
Loans and Leases Receivable-Nonaccrual, future commitment to lend	0	2,977,000	0	2,977,000
Non Covered Loans
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	57,926,000		57,926,000		65,041,000
Restructured loans - accrual status	16,278,000		16,278,000		10,856,000
Restructured loans - nonaccrual status	13,000,000		13,000,000		14,100,000
Total restructured loans	29,300,000		29,300,000		25,000,000
Total impaired loans	74,204,000		74,204,000		75,897,000
Interest income effect
Gross amount of interest that would have been recorded under original terms	1,142,000	1,145,000	3,399,000	3,734,000
Interest included in income
Nonaccrual loans	130,000	158,000	472,000	586,000
Restructured loans	115,000	95,000	316,000	247,000
Interest income recognized	245,000	253,000	788,000	833,000	1,125,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	897,000	892,000	2,611,000	2,901,000
Non Covered Loans | Commercial
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	8,554,000		8,554,000		15,893,000
Total impaired loans	12,554,000		12,554,000		18,521,000
Interest included in income
Interest income recognized	25,000		199,000		376,000
Non Covered Loans | Real estate-construction
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	1,099,000		1,099,000		2,102,000
Total impaired loans	1,099,000		1,099,000		2,102,000
Interest included in income
Interest income recognized	0		7,000		96,000
Non Covered Loans | Real estate-commercial
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	35,549,000		35,549,000		34,977,000
Total impaired loans	43,706,000		43,706,000		39,796,000
Interest included in income
Interest income recognized	158,000		406,000		512,000
Non Covered Loans | Real estate - residential
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	9,346,000		9,346,000		7,869,000
Total impaired loans	13,069,000		13,069,000		11,178,000
Interest included in income
Interest income recognized	49,000		139,000		119,000
Non Covered Loans | Installment
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	421,000		421,000		452,000
Total impaired loans	489,000		489,000		452,000
Interest included in income
Interest income recognized	1,000		4,000		2,000
Non Covered Loans | Home equity
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	2,871,000		2,871,000		3,252,000
Total impaired loans	3,201,000		3,201,000		3,352,000
Interest included in income
Interest income recognized	12,000		33,000		20,000
Non Covered Loans | Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	86,000		86,000		496,000
Total impaired loans	86,000		86,000		496,000
Interest included in income
Interest income recognized	$ 0		$ 0		$ 0