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Investments (Tables)
 3 Months Ended
Mar. 31, 2013
Investments [Abstract]  
Schedule Of Fair Value Method Investments, Balance Sheets And Income Statements
    March 31,   December 31,     March 31,   December 31,
(In Thousands)   2013   2012     2013   2012
Assets:         Liabilities & Equity:        
Cash & cash equivalents $ 39,013 $ 53,288 Long term debt, current portion $ 1,322 $ -
Other current assets   3,171   686 Other current liabilities   4,466   13,405
Patents   2,176   2,152 Non-current liabilities   1,738   1,449
Other long-term assets   6,633   4,278 Long term debt, net of discount   13,397   14,696
          Redeemable preferred stock   21,235   20,995
          Equity   8,835   9,859
Total assets $ 50,993 $ 60,404 Total liabilities & equity $ 50,993 $ 60,404

 

    Three Months Ended  
    March 31,  
    2013     2012  
Revenues & Expenses:            
Royalty revenues $ 1,800   $ -  
Expenses and other, net   (3,802 )   (2,489 )
Income tax (expense) benefit   1,087     950  
Net income (loss) $ (915 ) $ (1,539 )