Income Taxes (Components Of The Net Deferred Tax (Liabilities) Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Covered Loans	$ 38,812	$ 49,334
Allowance for loan and lease losses	36,221	41,084
Accrued severance and deferred compensation	10,976	10,690
Tax credits	6,815	13,289
Non-covered other real estate owned	6,566	3,741
Covered other real estate owned	6,284	8,132
Non-covered loans	2,607	3,401
Discount on trust preferred securities	2,535	2,753
Basis differences of stock and securities	2,335	2,998
Net operating loss carryforwards	1,291	8,897
Other	9,826	7,719
Total gross deferred tax assets	124,268	152,038
FDIC indemnification asset	45,817	73,719
Unrealized gain on investment securities	22,713	16,966
Fair market value adjustment on junior subordinated debentures	20,099	20,801
Premises and equipment depreciation	8,789	5,581
Mortgage servicing rights	7,058	5,782
Deferred loan fees	4,983	4,297
Intangibles	4,928	5,228
Leased assets	4,251	4,879
Other	6,063	5,136
Total gross deferred tax liabilities	124,701	142,389
Net deferred tax (liabilities) assets	$ (433)	$ 9,649