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v3.19.3.a.u2

Marketable Securities - Fair value on a recurring basis (Details) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 01, 2016 | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Fair value of financial instruments |  |  |  |  |
Assets transfers from Level 1 to Level 2 |  |  |  | $ 0 |
Assets transfers from Level 2 to Level 1 |  |  |  | 0 |
Assets transfers into Level 3 |  |  |  | 0 |
Assets transfers out of Level 3 |  |  |  | 0 |
Liabilities transfers from Level 1 to Level 2 |  |  |  | 0 |
Liabilities transfers from Level 2 to Level 1 |  |  |  | 0 |
Liabilities transfers into Level 3 |  |  |  | 0 |
Liabilities transfers out of Level 3 |  |  |  | 0 |
Long term investments (Note 6) |  | $ 99,199 |  | 133,657 | $ 99,199
ARIAD |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Contingent consideration earned during the period but not yet paid |  |  |  | 23,000 | 13,200
ARIAD | Contingent Consideration |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Projected cash flows period | 18 years |  |  |  |
ARIAD | Discount rate | Contingent Consideration |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Discount rate (as a percent) | 0.10 |  |  |  |
ARIAD | Account payable |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Contingent consideration earned during the period but not yet paid |  |  | $ (6,700) |  |
ARIAD | Accrued and other current liabilities |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Contingent consideration earned during the period but not yet paid |  | (6,500) |  |  |
Level 3 | Fair Value |  |  |  |  |
Roll forward of Level 3 liabilities |  |  |  |  |
Balance at the beginning of the period |  |  |  | 287,001 | 287,000
Contingent consideration earned during the period but not yet paid |  |  |  | (23,012) | (13,184)
Payments made during the period |  |  |  | (6,671) | (12,988)
Change in fair value of contingent consideration |  |  |  | 19,682 | 26,173
Balance at the end of the period |  | 287,001 |  | 277,000 | 287,001
Recurring | Fair Value |  |  |  |  |
Fair value of financial instruments |  |  |  |  |
Cash and cash equivalents |  | 1,163,980 |  | 1,832,684 | 1,163,980
Debt securities (corporate and government) |  | 274,343 |  | 284,870 | 274,343
Long term investments (Note 6) |  | 99,199 |  | 133,657 | 99,199
Total assets |  | 1,537,522 |  | 2,251,211 | 1,537,522
Acquisition-related contingent consideration |  | 287,001 |  | 277,000 | 287,001
Total liabilities |  | 287,001 |  | 277,000 | 287,001
Recurring | Level 1 |  |  |  |  |
Fair value of financial instruments |  |  |  |  |
Cash and cash equivalents |  | 1,163,980 |  | 1,832,684 | 1,163,980
Long term investments (Note 6) |  | 99,199 |  | 133,657 | 99,199
Total assets |  | 1,263,179 |  | 1,966,341 | 1,263,179
Recurring | Level 2 |  |  |  |  |
Fair value of financial instruments |  |  |  |  |
Debt securities (corporate and government) |  | 274,343 |  | 284,870 | 274,343
Total assets |  | 274,343 |  | 284,870 | 274,343
Recurring | Level 3 |  |  |  |  |
Fair value of financial instruments |  |  |  |  |
Acquisition-related contingent consideration |  | 287,001 |  | 277,000 | 287,001
Total liabilities |  | $ 287,001 |  | $ 277,000 | $ 287,001

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