Fair Value (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Fair Value (Textual) [Abstract]
Credit spreads on Moody's rating	45-80 basis points
Liquidity risk adjustments ranged	20-55 basis points
Liquidity risk adjustments ranged, securities of 15 largest banks	20-40 basis points
Investment in three largest banks	$ 17,900,000
Investment in three largest banks percentage	49.20%
Investment in Floating rate trust preferred securities	36,400,000
Write-downs on REO properties	$ 0	$ 150,000