Loan Servicing (Detail Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Servicing Assets at Fair Value [Line Items]
Unpaid principal balances of mortgage and other loans serviced	$ 113.6	$ 96.3
Dupont State Bank
Servicing Assets at Fair Value [Line Items]
Federal National Mortgage Association Bank (FNMA) loan acquired	$ 17.6