Borrowings - Longer-term Borrowings (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Long-term borrowings
Balance	$ 20,994	$ 27,494
Federal Home Loan Bank Advances [Member]
Long-term borrowings
Balance		5,000
Interest Rate		3.75%
First Subordinated Term Loan Note [Member]
Long-term borrowings
Balance	125	625
Interest Rate	1.62%	1.68%
Maturity	Apr. 01, 2013
Second Subordinated Term Loan Note [Member]
Long-term borrowings
Balance	250	1,250
Interest Rate	1.62%	1.68%
Maturity	May 01, 2013
Junior subordinated debt owed to unconsolidated subsidiary trust [Member]
Long-term borrowings
Balance	$ 20,619	$ 20,619
Interest Rate	3.39%	3.45%
Maturity	Oct. 01, 2033