Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

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Stockholders' Equity (Details Textual) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Stockholders' Equity Attributable to Parent [Abstract]    
Common stock, par or stated value per share $ 0.01 $ 0.01