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CAPITALIZED FEES PAID TO A RELATED PARTY (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Capitalized Fees paid to a Related Party |  |  |
Net carrying value | $ 125,253 | $ 139,076 |
Weighted average remaining amortization period | 9 years 1 month 6 days |  |
Capitalized Fees paid to a Related Party, Future amortization |  |  |
Estimated amortization expense for the year 2021 | $ 13,800 |  |
Estimated amortization expense for the year 2022 | 13,800 |  |
Estimated amortization expense for the year 2023 | 13,800 |  |
Estimated amortization expense for the year 2024 | 13,800 |  |
Estimated amortization expense for the year 2025 | 13,800 |  |
Estimated amortization expense after 2025 | 56,300 |  |
GSK |  |  |
Capitalized Fees paid to a Related Party |  |  |
Gross carrying value | 220,000 | 220,000 |
Accumulated amortization | (94,747) | (80,924) |
Net carrying value | 125,253 | 139,076 |
GSK | Royalty revenue from a related party |  |  |
Capitalized Fees paid to a Related Party |  |  |
Amortization expense | 13,823 | 13,823 | $ 13,823
GSK | United States |  |  |
Capitalized Fees paid to a Related Party |  |  |
Gross carrying value | 120,000 | 120,000 |
GSK | Europe |  |  |
Capitalized Fees paid to a Related Party |  |  |
Gross carrying value | 60,000 | 60,000 |
GSK | Japan |  |  |
Capitalized Fees paid to a Related Party |  |  |
Gross carrying value | $ 40,000 | $ 40,000 |

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- Definition Amount of amortization expense for assets expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Weighted average remaining amortization period of capitalized fees paid to a related party, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of accumulated amortization of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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