LOANS (covered) - Changes in Covered Other Real Estate Owned (Details) (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	$ 28,862	$ 44,818
Additions	6,678	5,374
Disposals	4,965	5,548
Write-downs	1,230	3,155
Balance at end of period	29,345	41,489
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	6,462	2,750
Disposals	4,621	5,005
Write-downs	1,125	3,084
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	216	2,624
Disposals	344	543
Write-downs	$ 105	$ 71