Collaboration Agreements - Changes in Balances of Receivables and Contract Liabilities (Details) $ in Thousands |
12 Months Ended |
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Dec. 31, 2019
USD ($)
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| Contract Assets: | |
| Beginning balance | $ 4,612 |
| Additions | 11,890 |
| Deductions | (14,530) |
| Ending balance | 1,972 |
| Contract Liabilities: | |
| Beginning balance | 240,924 |
| Additions | 10,591 |
| Deductions | (51,987) |
| Ending balance | 199,528 |
| Amounts included in contract liabilities at the beginning of the period | $ 51,987 |
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- Definition Change In Contract with Customer Asset [Roll Forward] No definition available.
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- Definition Change In Contract with Customer Liability [Roll Forward] No definition available.
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- Definition Contract With Customer Asset Decrease During Period No definition available.
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- Definition Contract With Customer Asset Increase During Period No definition available.
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- Definition Contract With Customer Liability Decrease During Period No definition available.
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- Definition Contract With Customer Liability Increase During Period No definition available.
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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