Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and due from banks	$ 35,407	$ 67,279
Interest-earning balances due from Federal Reserve	309,936	286,769
Interest-earning balances due from depository institutions	0	50,227
Total cash and cash equivalents	345,343	404,275
Interest-bearing balances due from depository institutions	60,000	50,190
Investment securities available-for-sale, at fair value (with amortized cost of $2,130,029 at December 31,2011 and $1,780,493 at December 31,2010)	2,201,526	1,791,558
Investment securities held-to-maturity	2,383	3,143
Investment in stock of Federal Home Loan Bank (FHLB)	72,689	86,744
Non-covered loans held-for-sale	348	2,954
Covered loans held-for-sale	5,664
Loans and lease finance receivables, excluding covered loans	3,219,727	3,373,728
Allowance for credit losses	(93,964)	(105,259)
Net Loans and lease finance receivables	3,125,763	3,268,469
Covered loans and lease finance receivables, net	256,869	374,012
Premises and equipment, net	36,280	40,921
Bank owned life insurance	116,132	112,901
Accrued interest receivable	23,512	23,647
Intangibles	5,548	9,029
Goodwill	55,097	55,097
FDIC loss sharing asset	59,453	101,461
Non-covered other real estate owned	13,820	5,290
Covered other real estate owned	9,782	11,305
Income taxes	48,033	55,609
Other assets	44,673	40,086
TOTAL ASSETS	6,482,915	6,436,691
Deposits:
Noninterest-bearing	2,027,876	1,701,523
Interest-bearing	2,576,672	2,817,305
Total deposits	4,604,548	4,518,828
Demand Note to U.S. Treasury	0	1,917
Customer repurchase agreements	509,370	542,188
Borrowings	448,662	553,390
Accrued interest payable	3,526	4,985
Deferred compensation	8,735	9,221
Junior subordinated debentures	115,055	115,055
Other liabilities	78,205	47,252
TOTAL LIABILITIES	5,768,101	5,792,836
COMMITMENTS AND CONTINGENCIES
Stockholders' Equity:
Preferred stock, authorized, 20,000,000 shares without par; none issued or outstanding
Common stock, authorized, 225,000,000 shares without par; issued and outstanding 104,482,271 (2011) and 106,075,576 (2010)	479,973	490,226
Retained earnings	193,372	147,444
Accumulated other comprehensive income, net of tax	41,469	6,185
Total stockholders' equity	714,814	643,855
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 6,482,915	$ 6,436,691