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Quarterly Financial Data (Unaudited) - Quarterly Financial Data (Details) (Imported) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues | $ 76,912 | $ 63,868 | $ 53,853 | $ 56,886 | $ 55,877 | $ 59,711 | $ 49,003 | $ 45,870 | $ 251,519 | $ 210,461 | $ 229,681
Gross profit | 33,171 | 17,578 | 13,318 | 13,280 | 11,960 | 11,791 | 14,996 | 12,509 | 77,347 | 51,256 | 86,956
Net income (loss) | 7,533 | $ (3,008) | $ (6,647) | $ (665) | $ (2,521) | $ (5,379) | $ (1,180) | $ (1,619) | $ (2,787) | $ (10,699) | $ 11,862
Decrease to net income due to not recognizing non-operating expense for certain foreign currency transactions | $ 1,100 |  |  |  |  |  |  |  |  |  |
Weighted-average shares used to compute net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |
Basic (in Shares) | 45,085 | 45,310 | 44,849 | 44,601 | 44,648 | 44,644 | 39,767 | 38,769 | 44,961,000 | 41,957,000 | 38,712,000
Diluted (in Shares) | 46,709 | 45,310 | 44,849 | 44,601 | 44,648 | 44,644 | 39,767 | 38,769 | 44,961,000 | 41,957,000 | 38,883,000
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |
Basic (in Dollars per share) | $ 0.17 | $ (0.07) | $ (0.15) | $ (0.01) | $ (0.06) | $ (0.12) | $ (0.03) | $ (0.04) | $ (0.06) | $ (0.25) | $ 0.31
Diluted (in Dollars per share) | $ 0.16 | $ (0.07) | $ (0.15) | $ (0.01) | $ (0.06) | $ (0.12) | $ (0.03) | $ (0.04) | $ (0.06) | $ (0.25) | $ 0.31
Finished Pharmaceutical Products |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues | $ 66,092 | $ 57,902 | $ 50,075 | $ 50,872 | $ 49,980 | $ 53,729 | $ 48,901 | $ 45,870 | $ 224,941 | $ 198,480 | $ 229,681
Gross profit | 29,357 | 19,302 | 12,634 | 12,853 | 13,132 | 12,122 | 14,961 | $ 12,509 | 74,146 | 52,724 | $ 86,956
API |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues | 10,820 | 5,966 | 3,778 | 6,014 | 5,897 | 5,982 | 102 |  | 26,578 | 11,981 |
Gross profit | $ 3,814 | $ (1,724) | $ 684 | $ 427 | $ (1,172) | $ (331) | $ 35 |  | $ 3,201 | $ (1,468) |

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