Trust Preferred Securities (Details Textual) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Trust Preferred Securities [Line Items]
Accrued interest payable	$ 1,007	$ 1,118
Balance of the subordinated notes payable	16,238	16,238
Trust Preferred Securities (Textual) [Abstract]
Maturity date of subordinate notes	Jun. 15, 2037
Trust I [Member]
Trust Preferred Securities [Line Items]
Preferred securities sold to outside investors	10,000
Floating interest rate period	three-month LIBOR
LIBOR basis points	1.48%
Effective interest rate	1.95%
Accrued interest payable	7	7
Balance of the subordinated notes payable	8,116
Trust II [Member]
Trust Preferred Securities [Line Items]
Preferred securities sold to outside investors	10,000
Floating interest rate period	three-month LIBOR
Fixed interest rate of Trust II	6.64%
LIBOR basis points	1.48%
Effective interest rate	6.64%
Accrued interest payable	22	24
Balance of the subordinated notes payable	$ 8,116