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Discontinued Operations (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended
Oct. 31, 2009
Jul. 01, 2012
Jul. 01, 2012
Dec. 31, 2011
Oct. 26, 2009
Discontinued operations (Textual) [Abstract]          
Common stock sold $ 39,000,000        
Cash deposited         3,000,000
Expected indemnification claim liability   946,000 946,000    
Legal expenses on claim   576,000 799,000    
Indemnification claim liability paid     196,000    
Indemnification claim asserted against the company     6,000,000    
Accrued liabilities   26,081,000 26,081,000 23,569,000 [1]  
Restricted cash - current   $ 3,000,000 $ 3,000,000 $ 0 [1]  
[1] The balance sheet at December 31,2011 has been derived from the audited consolidated financial statements at that date but does not include all information and footnotes required by accounting principles generally accepted in the United States for a complete set of financial statements.