Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2010
Summary of Significant Accounting Policies
Number of full service branches at Indianapolis and Indiana	3
Number of full service branches at Cincinnati and Ohio	3
Income Taxes
Gross amount of unrecognized tax benefits	$ 70,000	$ 101,000	$ 230,000
Amount accrued for the potential payment of interest and penalties	$ 4,000	$ 7,000
Segment Information
Number of operating segments	2
Total number of full service branches	31
Minimum
Premises and equipment
Estimated useful lives of the assets	3 years
Maximum
Premises and equipment
Estimated useful lives of the assets	40 years