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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues: |  |  |
Royalties | $ 23,584 | $ 14,073 | $ 9,213
Material Sales | 19,072 | 9,432 | 12,123
Collaborative research and development and other revenues | 6,317 | 7,883 | 8,701
Total revenues | 48,973 | 31,388 | 30,037
Operating costs and expenses: |  |  |
Cost of material sales | 5,732 | 3,601 | 4,909
Research and development | 9,274 | 10,790 | 10,291
General and administrative | 17,984 | 15,782 | 14,583
Lease exit and termination costs | 560 | 1,022 | 552
Write-off of acquired in-process research and development | 480 | 0 | 2,282
Total operating costs and expenses | 34,030 | 31,195 | 32,617
Accretion of deferred gain on sale leaseback | 0 | 0 | 1,702
Income (loss) from operations | 14,943 | 193 | (878)
Other (expense) income: |  |  |
Interest expense, net | (2,077) | (2,924) | (2,297)
Increase in contingent liabilities | (3,597) | (1,650) | (1,013)
Other, net | (63) | 516 | 630
Total other expense, net | (5,737) | (4,058) | (2,680)
Income (loss) from continuing operations before income tax benefit | 9,206 | (3,865) | (3,558)
Income tax (expense) benefit from continuing operations | (374) | 1,191 | 13,270
Income (loss) from continuing operations | 8,832 | (2,674) | 9,712
Discontinued operations: |  |  |
Gain on sale of Product Line, net | 2,588 | 3,656 |
Income tax expense on discontinued operations |  | (1,509) | 0
Income from discontinued operations | 2,588 | 2,147 | 3
Net income (loss) | 11,420 | (527) | 9,715
Basic per share amounts: |  |  |
Income (loss) from continuing operations (in usd per share) | $ 0.43 | $ (0.14) | $ 0.49
Income from discontinued operations (in usd per share) | $ 0.13 | $ 0.11 | $ 0.000000
Net income (loss) (in usd per share) | $ 0.56 | $ (0.03) | $ 0.49
Weighted average number of common shares-basic (in shares) | 20,312,395 | 19,853,095 | 19,655,632
Diluted per share amounts: |  |  |
Income (loss) from continuing operations (in usd per share) | $ 0.43 | $ (0.14) | $ 0.49
Income from discontinued operations (in usd per share) | $ 0.12 | $ 0.11 | $ 0.000000
Net income (loss) income (in usd per share) | $ 0.55 | $ (0.03) | $ 0.49
Weighted average number of common shares-diluted (in shares) | 20,745,454 | 19,853,095 | 19,713,320
AVINZA Product Line |  |  |
Discontinued operations: |  |  |
Gain on sale of Product Line, net | 2,588 | 3,656 | 0
Oncology Product Line |  |  |
Discontinued operations: |  |  |
Gain on sale of Product Line, net | $ 0 | $ 0 | $ 3

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