Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details Textual)

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Fair Value Measurements (Details Textual) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2013
MarketParticipant
Mar. 31, 2012
Dec. 31, 2012
Fair Value Measurement (Textual) [Abstract]      
Minimum number of market participants 4,000    
Nonrecurring fair value adjustments were recorded on loans held for sale $ 0   $ 0
Total valuation expenses related to OREO properties $ 0 $ 0 $ 301,000