Other Operating Expenses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Operating Expenses
Printing, postage, and supplies	$ 814	$ 502	$ 2,020	$ 1,597
Communication expense	783	716	2,246	2,178
Technology and data processing	2,034	2,135	6,411	6,885
Professional services	850	767	2,284	2,310
Marketing and advertising expense	1,241	1,414	4,131	3,909
FDIC assessment premiums and other insurance	593	905	1,912	4,050
Other taxes	746	711	2,262	2,121
Loan related expenses	489	468	1,646	1,433
OREO and related costs	1,035	532	3,273	3,389
Amortization of core deposit premiums	1,313	1,596	4,048	4,974
Acquisition and conversion costs				426
Other expenses	2,070	2,041	6,019	5,619
Total other operating expenses	$ 11,968	$ 11,787	$ 36,252	$ 38,891