Financial Instruments With Off-Balance Sheet Risk (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financial instruments with-off balance sheet risk (Textual)
Commitment under letters of credit	$ 2.3	$ 2.5
Unfunded commitments to extend credit [Member]
Financial instruments with-off balance sheet risk (Textual)
Amount of unfunded commitments to extend credit	115.6	98.9
Unfunded commitments to extend credit at fixed rate	22.1	17.6
Unfunded commitments to extend credit at variable rate	$ 93.5	$ 81.3