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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

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