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7. Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Total debt $ 293,482 $ 301,424
Debt - current 14,000 11,103
Debt - long term 279,482 290,321
Wells Fargo Credit Facility    
Total debt 14,000 14,000
4.25% Convertible Notes    
Total debt 106,377 104,071
Treximet Secured Notes    
Total debt $ 173,105 $ 183,353