Quarterly report pursuant to sections 13 or 15(d)

Goodwill and Intangible Assets (Details Textual)

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Goodwill and Intangible Assets (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Goodwill and Intangible Assets (Textual) [Abstract]    
Goodwill accumulated impairment charges   $ 64,100,000
Amortization of intangible assets $ 672,000 $ 684,000