Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
INTEREST REVENUE:
Loans and leases	$ 99,962	$ 98,524	$ 198,706	$ 197,616
Deposits with other banks	87	483	363	1,085
Available-for-sale securities:
Taxable	7,133	8,405	14,680	17,105
Tax-exempt	3,669	3,911	7,384	7,871
Loans held for sale	648	686	965	1,359
Total interest revenue	111,499	112,009	222,098	225,036
Deposits:
Interest bearing demand	1,905	2,423	3,825	5,548
Savings	402	422	793	935
Other time	5,249	7,671	11,139	15,712
Federal funds purchased and securities sold under agreement to repurchase	80	70	158	133
Long-term debt	619	349	1,248	697
Junior subordinated debt	162	2,860	330	5,717
Other	1	1	1	3
Total interest expense	8,418	13,796	17,494	28,745
Net interest revenue	103,081	98,213	204,604	196,291
Provision for credit losses		3,000	0	7,000
Net interest revenue, after provision for credit losses	103,081	95,213	204,604	189,291
NONINTEREST REVENUE:
Mortgage lending	9,089	17,892	12,483	30,238
Credit card, debit card and merchant fees	8,567	8,324	16,410	15,847
Deposit service charges	12,437	12,824	24,973	25,656
Security (losses) gains, net	5	3	1	22
Insurance commissions	28,621	25,862	60,220	52,503
Wealth management	5,828	5,802	11,744	11,589
Other	5,291	5,402	10,524	11,572
Total noninterest revenue	69,838	76,109	136,355	147,427
NONINTEREST EXPENSE:
Salaries and employee benefits	74,741	78,284	153,624	157,698
Occupancy, net of rental income	10,245	10,577	20,532	20,814
Equipment	4,169	4,585	8,668	9,533
Deposit insurance assessments	2,035	2,939	3,635	5,743
Voluntary early retirement expense		10,850		10,850
Write-off and amortization of bond issue cost	12	38	24	76
Other	36,752	34,978	68,178	72,908
Total noninterest expense	127,954	142,251	254,661	277,622
Income before income taxes	44,965	29,071	86,298	59,096
Income tax expense	14,097	8,316	26,986	17,536
Net income	$ 30,868	$ 20,755	$ 59,312	$ 41,560
Earnings per share:
Basic (in dollars per share)	$ 0.32	$ 0.22	$ 0.62	$ 0.44
Diluted (in dollars per share)	$ 0.32	$ 0.22	$ 0.62	$ 0.44
Dividends declared per common share (in dollars per share)	$ 0.05	$ 0.01	$ 0.10	$ 0.02