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Share-Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Share-Based Compensation (Textual) [Abstract]        
Recognized share-based compensation awards $ 165,000 $ 151,000 $ 493,000 $ 538,000