LOANS AND LEASES (Loans Acquired By Loan Class) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2011 Commercial Loans [Member]	Dec. 31, 2010 Commercial Loans [Member]	Dec. 31, 2011 Commercial Loans [Member] Construction And Land Development [Member]	Dec. 31, 2010 Commercial Loans [Member] Construction And Land Development [Member]	Dec. 31, 2011 Commercial Loans [Member] Commercial Mortgage [Member]	Dec. 31, 2010 Commercial Loans [Member] Commercial Mortgage [Member]	Dec. 31, 2011 Commercial Loans [Member] Other Commercial Real Estate [Member]	Dec. 31, 2010 Commercial Loans [Member] Other Commercial Real Estate [Member]	Dec. 31, 2011 Commercial Loans [Member] Commercial And Industrial [Member]	Dec. 31, 2010 Commercial Loans [Member] Commercial And Industrial [Member]	Dec. 31, 2011 Commercial Loans [Member] Lease Financing [Member]	Dec. 31, 2010 Commercial Loans [Member] Lease Financing [Member]	Dec. 31, 2011 Commercial Loans [Member] Other Loans [Member]	Dec. 31, 2010 Commercial Loans [Member] Other Loans [Member]	Dec. 31, 2011 Non-Commercial Loans [Member]	Dec. 31, 2010 Non-Commercial Loans [Member]	Dec. 31, 2011 Non-Commercial Loans [Member] Construction And Land Development [Member]	Dec. 31, 2010 Non-Commercial Loans [Member] Construction And Land Development [Member]	Dec. 31, 2011 Non-Commercial Loans [Member] Residential Mortgage [Member]	Dec. 31, 2010 Non-Commercial Loans [Member] Residential Mortgage [Member]	Dec. 31, 2011 Non-Commercial Loans [Member] Revolving Mortgage [Member]	Dec. 31, 2010 Non-Commercial Loans [Member] Revolving Mortgage [Member]	Dec. 31, 2011 Non-Commercial Loans [Member] Consumer [Member]	Dec. 31, 2010 Non-Commercial Loans [Member] Consumer [Member]	Jan. 21, 2011 United Western Bank [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member] Construction And Land Development [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member] Commercial Mortgage [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member] Other Commercial Real Estate [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member] Commercial And Industrial [Member]	Jan. 21, 2011 United Western Bank [Member] Commercial Loans [Member] Lease Financing [Member]	Jan. 21, 2011 United Western Bank [Member] Non-Commercial Loans [Member]	Jan. 21, 2011 United Western Bank [Member] Non-Commercial Loans [Member] Construction And Land Development [Member]	Jan. 21, 2011 United Western Bank [Member] Non-Commercial Loans [Member] Residential Mortgage [Member]	Jan. 21, 2011 United Western Bank [Member] Non-Commercial Loans [Member] Revolving Mortgage [Member]	Jan. 21, 2011 United Western Bank [Member] Non-Commercial Loans [Member] Consumer [Member]	Jul. 08, 2011 Colorado Capital Bank [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Commercial Loans [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Commercial Loans [Member] Construction And Land Development [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Commercial Loans [Member] Commercial Mortgage [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Commercial Loans [Member] Other Commercial Real Estate [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Commercial Loans [Member] Commercial And Industrial [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Non-Commercial Loans [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Non-Commercial Loans [Member] Construction And Land Development [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Non-Commercial Loans [Member] Residential Mortgage [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Non-Commercial Loans [Member] Revolving Mortgage [Member]	Jul. 08, 2011 Colorado Capital Bank [Member] Non-Commercial Loans [Member] Consumer [Member]
Total covered loans acquired	$ 2,362,152	[1]	$ 2,007,452	[1]	$ 1,872,685	$ 1,802,132	$ 338,873	$ 368,420	$ 1,260,589	$ 1,089,064	$ 158,394	$ 210,661	$ 113,442	$ 132,477	$ 57	$ 0	$ 1,330	$ 1,510	$ 489,467	$ 205,320	$ 105,536	$ 105,805	$ 327,568	$ 74,495	$ 51,552	$ 17,866	$ 4,811	$ 7,154	$ 759,351	$ 441,931	$ 52,889	$ 304,769	$ 8,434	$ 75,523	$ 316	$ 317,420	$ 39,827	$ 260,389	$ 12,073	$ 5,131	$ 320,789	$ 173,522	$ 106,439	$ 30,026	$ 4,807	$ 32,250	$ 147,267	$ 38,295	$ 68,522	$ 34,363	$ 6,087

[1] Covered loans are acquired loans subject to loss share agreements with the FDIC.