Investment Securities (Details 3) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Rating:
Year of Vintage 2006	$ 7,425	$ 7,994
Total Fair Value	7,425	7,994
Total Amortized Cost	8,090	9,147
Total OTTI Related To Credit Loss	1,052	1,052
Additional O TTI
CMOs [Member]
Rating:
Year of Vintage 2006
Total Fair Value
Total Amortized Cost
Total OTTI Related To Credit Loss
Additional O TTI
CCC and Below [Member]
Rating:
Year of Vintage 2006	7,425	7,994
Total Fair Value	7,425	7,994
Total Amortized Cost	8,090	9,147
Total OTTI Related To Credit Loss	1,052	1,052
Additional O TTI