Investment Securities (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Non-Agency Collateralized Mortgage Obligations Book Value Other Than Temporary	$ 962,000	$ 1,800,000	$ 962,000	$ 1,800,000
Non-Agency Collateralized Mortgage Obligations Book Value Other Than Temporary Pretax Charge to Income	$ 262,000	$ 400,000	$ 262,000	$ 400,000