LOANS (excluding covered loans) - Changes in Other Real Estate Owned (Details) (Non Covered Loans, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 12,526	$ 11,317
Additions	704	5,463
Disposals	535	761
Write-downs	702	983
Balance at end of period	11,993	15,036
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	557	4,541
Disposals	241	462
Write-downs	405	958
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	147	922
Disposals	294	299
Write-downs	$ 297	$ 25