Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Details Textual)

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Discontinued Operations (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Oct. 31, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Discontinued Operations and Disposal Groups [Abstract]        
Cash received from disposal of business $ 17,500,000      
Estimated royalty to be received from disposal of business 22,500,000      
Income (loss) from discontinued operations, net of tax   $ 0 $ 109,000 $ 5,181,000