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Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Deferred assets: |  |
Net operating loss carryforwards | $ 196,421 | $ 198,445
Research and AMT credit carryforwards | 30,092 | 27,169
Fixed assets and intangibles | 17,293 | 23,763
Accrued expenses | 1,474 | 1,366
Contingent liabilities | 582 | 1,779
Deferred revenue | 760 | 1,013
Present value of royalties | 12,175 | 10,836
Organon termination asset | (4,073) | (4,503)
Organon termination liability | 4,073 | 4,503
Royalty obligation | 0 | 861
Deferred rent | 1,634 | 2,635
Lease termination costs | 0 | 0
Capital loss carryforwards | 148 | 298
Other | 3,701 | 1,844
Deferred tax assets | 264,280 | 270,009
Valuation allowance for deferred tax assets | (249,470) | (254,870)
Net deferred tax assets | 14,810 | 15,139
Deferred tax liabilities: |  |
Retrophin fair value adjustment | (859) | 0
Identified intangibles | (13,984) | (15,139)
Identified indefinite lived intangibles | (2,639) | (2,298)
Total | $ (2,672) | $ (2,298)

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