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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2018
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis | The following table presents the hierarchy for our assets and liabilities measured at fair value (in thousands):
|  | September 30, 2018 |  |  |  |  |  |  |  | December 31, 2017 |  |  |  |  |  |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments(1) |  | $ | 106,866 |  | $ | 889,445 |  | $ | — |  | $ | 996,311 |  | $ | 1,896 |  | $ | 179,145 |  | $ | — |  | $ | 181,041
Note receivable Viking |  | — |  | — |  | — |  | — |  | — |  | — |  | 3,877 |  | 3,877
Investment in warrants(2) |  | 24,284 |  | — |  | — |  | 24,284 |  | 3,846 |  | — |  | — |  | 3,846
Total assets |  | $ | 131,150 |  | $ | 889,445 |  | $ | — |  | $ | 1,020,595 |  | $ | 5,742 |  | $ | 179,145 |  | $ | 3,877 |  | $ | 188,764
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Crystal contingent liabilities(3) |  | $ | — |  | $ | — |  | $ | 7,401 |  | $ | 7,401 |  | $ | — |  | $ | — |  | $ | 8,401 |  | 8,401
CyDex contingent liabilities(4) |  | — |  | — |  | 514 |  | 514 |  | — |  | — |  | 1,589 |  | 1,589
Metabasis contingent liabilities(5) |  | — |  | 4,816 |  | — |  | 4,816 |  | — |  | 3,971 |  | — |  | 3,971
Total liabilities |  | $ | — |  | $ | 4,816 |  | $ | 7,915 |  | $ | 12,731 |  | $ | — |  | $ | 3,971 |  | $ | 9,990 |  | $ | 13,961

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=99377789&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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