Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest Income
Interest and fees on loans	$ 74,885	$ 76,343	$ 226,046	$ 229,926
Interest on securities:
Taxable	15,909	18,115	51,645	58,481
Tax exempt	1,358	1,401	4,080	4,159
Interest on federal funds sold and securities purchased under reverse repurchase agreements	6	5	17	20
Other interest income	339	329	1,005	994
Total Interest Income	92,497	96,193	282,793	293,580
Interest Expense
Interest on deposits	5,725	9,455	19,543	29,110
Interest on federal funds purchased and securities sold under repurchase agreements	135	216	448	770
Other interest expense	1,358	842	4,131	3,815
Total Interest Expense	7,218	10,513	24,122	33,695
Net Interest Income	85,279	85,680	258,671	259,885
Provision for loan losses, LHFI	3,358	7,978	7,301	23,631
Provision for loan losses, acquired loans	2,105	0	3,583	0
Net Interest Income After Provision for Loan Losses	79,816	77,702	247,787	236,254
Noninterest Income
Service charges on deposit accounts	13,135	13,680	37,960	38,438
Insurance commissions	7,533	7,516	21,318	20,890
Wealth management	5,612	5,993	16,875	17,739
Bank card and other fees	6,924	7,033	22,467	20,362
Mortgage banking, net	11,150	9,783	29,629	20,774
Other, net	512	234	3,120	8,781
Securities (losses) gains, net	(1)	33	1,041	91
Total Noninterest Income	44,865	44,272	132,410	127,075
Noninterest Expense
Salaries and employee benefits	47,404	44,701	140,795	132,940
Services and fees	11,682	11,485	34,179	32,535
Net occupancy - premises	5,352	5,093	15,244	15,216
Equipment expense	5,095	5,038	15,190	15,038
FDIC assessment expense	1,826	1,812	5,427	6,500
ORE/Foreclosure expense	1,702	5,616	7,992	13,533
Other expense	10,399	11,736	38,366	31,085
Total Noninterest Expense	83,460	85,481	257,193	246,847
Income Before Income Taxes	41,221	36,493	123,004	116,482
Income taxes	11,317	9,525	33,431	33,899
Net Income	$ 29,904	$ 26,968	$ 89,573	$ 82,583
Earnings Per Common Share
Basic (in dollars per share)	$ 0.46	$ 0.42	$ 1.39	$ 1.29
Diluted (in dollars per share)	$ 0.46	$ 0.42	$ 1.38	$ 1.29
Dividends Per Common Share (in dollars per share)	$ 0.23	$ 0.23	$ 0.69	$ 0.69