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Current and Long- Term Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Accrued Expenses    
Commercial rebates, fees and returns $ 96,280 $ 89,466
Professional, license, and other fees and expenses 24,630 24,248
Research and development expenses 9,901 10,714
Research and development expenses 5,507 16,683
Interest expense 11,161 14,823
Salaries, bonuses, and other compensation 0 74
Restructuring expense $ 147,479 $ 156,008