Other Income and Operating Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Noninterest Income
Other service charges	$ 771	$ 588	$ 1,609	$ 1,125
Increase in cash surrender value of corporate owned life insurance	486	391	1,038	817
Net gain on sale of loans	68	150	97	250
Other income	485	641	1,432	842
Total other income	1,810	1,770	4,176	3,034
Noninterest Expenses
Marketing expense	1,378	1,250	2,542	2,422
Professional fees	1,411	901	2,765	1,787
Legal fees	529	178	1,121	333
Software licensing and maintenance	1,422	920	2,561	1,868
Cardholder expense	788	539	1,536	1,121
Other expenses	4,799	3,397	9,638	6,767
Total other operating expense	$ 10,327	$ 7,185	$ 20,163	$ 14,298