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Balance Sheet Account Details (Tables) | 12 Months Ended
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Dec. 31, 2019
Other Balance Sheet Details [Abstract] |
Schedule of Investment Categories | The following table summarizes the various investment categories at December 31, 2019 and 2018 (in thousands):
| Cost |  | Gross unrealized gains |  | Gross unrealized losses |  | Estimated fair value
December 31, 2019 |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |
Bank deposits | $ | 411,690 |  |  | $ | 188 |  |  | $ | (3) |  |  | $ | 411,875 |
Corporate bonds | 63,818 |  |  | 161 |  |  | — |  |  | 63,979 |
Corporate equity securities | 4,506 |  |  | 416 |  |  | (1,850) |  |  | 3,072 |
Commercial paper | 210,525 |  |  | 43 |  |  | (16) |  |  | 210,552 |
Warrants | — |  |  | 125 |  |  | — |  |  | 125 |
Mutual fund | 250,635 |  |  | — |  |  | (249) |  |  | 250,386 |
| $ | 941,174 |  |  | $ | 933 |  |  | $ | (2,118) |  |  | $ | 939,989 |
December 31, 2018 |  |  |  |  |  |  |
Short-term investments |  |  |  |  |  |  |
Bank deposits | $ | 311,066 |  |  | $ | 26 |  |  | $ | (29) |  |  | $ | 311,063 |
Corporate bonds | 53,223 |  |  | 1 |  |  | (45) |  |  | 53,179 |
Corporate equity securities | 135 |  |  | 1,191 |  |  | — |  |  | 1,326 |
Commercial paper | 225,731 |  |  | 8 |  |  | (76) |  |  | 225,663 |
U.S. Government bonds | 7,982 |  |  | — |  |  | (9) |  |  | 7,973 |
Municipal bonds | 2,017 |  |  | — |  |  | (4) |  |  | 2,013 |
| $ | 600,154 |  |  | $ | 1,226 |  |  | $ | (163) |  |  | $ | 601,217 |
Schedule of Property and Equipment | Property and equipment are stated at cost and consists of the following (in thousands):
| December 31, |  |
| 2019 |  | 2018
Lab and office equipment | $ | 6,307 |  |  | $ | 4,183 |
Leasehold improvements | 2,729 |  |  | 2,418 |
Computer equipment and software | 999 |  |  | 936 |
| 10,035 |  |  | 7,537 |
Less accumulated depreciation and amortization | (2,850) |  |  | (2,165) |
| $ | 7,185 |  |  | $ | 5,372 |
Schedule of Goodwill and Other Identifiable Intangible Assets | Goodwill and identifiable intangible assets consist of the following (in thousands):
| As of December 31, |  |
| 2019 |  | 2018
Indefinite lived intangible assets |  |  |
Goodwill | $ | 95,229 |  |  | $ | 86,646 |
Definite lived intangible assets |  |  |
Complete technology | 242,813 |  |  | 235,413 |
Less: Accumulated amortization(1) | (50,203) |  |  | (35,070) |
Trade name | 2,642 |  |  | 2,642 |
Less: Accumulated amortization | (1,180) |  |  | (1,048) |
Customer relationships | 29,600 |  |  | 29,600 |
Less: Accumulated amortization | (13,224) |  |  | (11,744) |
Total goodwill and other identifiable intangible assets, net | $ | 305,677 |  |  | $ | 306,439 |
(1) Accumulated amortization for complete technology includes immaterial amount of foreign currency translation adjustments for the complete technology acquired from the Vernalis acquisition.
Schedule of Accrued Liabilities | Accrued liabilities consist of the following (in thousands):
| December 31, |  |
| 2019 |  | 2018
Compensation | $ | 1,986 |  |  | $ | 4,045 |
Legal | 1,135 |  |  | 942 |
Amounts owed to former licensees | 381 |  |  | 428 |
Royalties owed to third parties | — |  |  | 1,025 |
Payments due to broker for share repurchases | — |  |  | 4,613 |
Return reserve | 3,027 |  |  | 3,590 |
Restructuring | — |  |  | 1,093 |
Current operating lease liabilities | 1,242 |  |  | — |
Other | 2,065 |  |  | 3,464 |
| $ | 9,836 |  |  | $ | 19,200 |
Schedule of Contingent Liabilities | The following table summarizes rollfoward of contingent liabilities as of December 2019 and 2018 (in thousands):
| December 31, 2017 | Payments | Fair Value Adjustment |  |  | December 31, 2018 | Payments | Fair Value Adjustment | Repurchases | December 31, 2019
Cydex | $ | 1,589 |  | $ | (25) |  | $ | (1,050) |  |  |  | $ | 514 |  | $ | (50) |  | $ | (116) |  | $ | — |  | $ | 348 |
Metabasis | 3,971 |  | (3,860) |  | 5,440 |  |  |  | 5,551 |  | — |  | 904 |  | (520) |  | 5,935 |
Crystal | 8,401 |  | (1,000) |  | (924) |  |  |  | 6,477 |  | (3,000) |  | (818) |  | — |  | 2,659 |
Total | $ | 13,961 |  | $ | (4,885) |  | $ | 3,466 |  |  |  | $ | 12,542 |  | $ | (3,050) |  | $ | (30) |  | $ | (520) |  | $ | 8,942 |

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