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v3.10.0.1

Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred assets: |  |
Net operating loss carryforwards | $ 57,181 | $ 90,272
Research credit carryforwards | 31,101 | 30,677
Fixed assets and intangibles | 1,637 | 1,984
Accrued expenses | 657 | 845
Deferred revenue | 957 | 17
Capital Loss Carryforward | 0 | 1,609
Investment in Viking | 0 | 5,137
Other | 11,430 | 12,499
Deferred tax assets | 102,963 | 143,040
Valuation allowance for deferred tax assets | (4,476) | (6,987)
Net deferred tax assets | 98,487 | 136,053
Deferred tax liabilities: |  |
Retrophin fair value adjustment | (179) | (243)
Convertible debt | (2,905) | (737)
Identified intangibles | (44,643) | (48,237)
Identified indefinite lived intangibles | (1,759) | (2,414)
Investment in Viking | (2,480) | 0
Net deferred tax liabilities | (51,966) | (51,631)
Total | $ 46,521 | $ 84,422

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