Other Expense (Components Of Other Expense) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Other Expense
Data processing expense	$ 7,106	$ 6,382	$ 12,251	$ 12,520
Insurance expense	652	498	1,154	989
Ad valorem and franchise taxes	1,557	1,049	2,594	2,030
Deposit insurance and regulatory fees	3,232	2,904	6,344	5,538
Postage and communications	3,642	2,651	6,402	5,223
Stationery and supplies	1,512	773	2,085	1,357
Advertising	2,127	2,193	4,176	3,538
Training expenses	208	163	408	333
Other fees	955	876	1,813	1,877
Travel expense	677	658	1,065	1,072
Other real estate owned expense, net	1,860	2,027	3,301	2,708
Other expense	3,375	2,720	5,855	5,649
Total other expense	$ 26,903	$ 22,894	$ 47,448	$ 42,834