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Discontinued Operations (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended 185 Months Ended 194 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
Sep. 30, 2012
Reclassification of operating results from continuing operations to loss from discontinued operations                  
Loss from discontinued operations, net of tax $ 1,263 $ (168) $ 904 $ (504) $ (640) $ (1,131) $ (1,549) $ (12,716) $ (11,812)
Current assets of discontinued operations:                  
Total current assets of discontinued operations 881   881   313 312   313 881
Current liabilities of discontinued operations:                  
Total current liabilities of discontinued operations 438   438   527 511   527 438
Xclair, Numoisyn Lozenges and Numoisyn Liquid
                 
Reclassification of operating results from continuing operations to loss from discontinued operations                  
Product revenue 302 164 583 524 699 574 910 3,021 3,604
Cost of goods sold (110) (95) (293) (273) (360) (418) (545) (1,752) (2,045)
Selling, general and administrative (121) (237) (578) (755) (979) (1,287) (1,907) (8,688) (9,266)
Goodwill and intangible impairment         0     (5,187) (5,187)
Interest expense         0   (7) (110) (110)
Loss from discontinued operations, net of tax 1,263 (168) 904 (504) (640) (1,131) (1,549) (12,716) (11,812)
Current assets of discontinued operations:                  
Inventory         182 174   182  
Accounts receivable 122   122   131 138   131 122
Total current assets of discontinued operations 881   881   313 312   313 881
Current liabilities of discontinued operations:                  
Accounts payable         46 133   46  
Returns provision 336   336   202 268   202 336
Accrued liabilities and other current liabilities 102   102   279 110   279 102
Total current liabilities of discontinued operations $ 438   $ 438   $ 527 $ 511   $ 527 $ 438