Intangible Asset and Goodwill - Narrative (Details) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2022
USD ($)
|
Mar. 31, 2021 |
Dec. 31, 2020 |
Jun. 30, 2020
USD ($)
|
Sep. 30, 2020 |
Dec. 31, 2022
USD ($)
segment
|
Dec. 31, 2021
USD ($)
|
Dec. 31, 2020
USD ($)
|
Sep. 30, 2022
USD ($)
|
Jun. 30, 2022
USD ($)
|
Mar. 31, 2022
USD ($)
|
|
| Finite-Lived Intangible Assets [Line Items] | |||||||||||
| Intangible assets, estimated useful life | 6 years | ||||||||||
| Amortization expense | $ 36,043,000 | $ 36,043,000 | $ 32,617,000 | ||||||||
| Impairment of intangible asset | $ 114,400,000 | 0 | 0 | 114,425,000 | |||||||
| Goodwill | $ 59,044,000 | $ 59,044,000 | 59,044,000 | $ 59,044,000 | $ 59,044,000 | $ 59,044,000 | |||||
| Number of operating segments | segment | 1 | ||||||||||
| Goodwill impairment | 0 | 0 | |||||||||
| Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | |||||||||||
| Finite-Lived Intangible Assets [Line Items] | |||||||||||
| Intangible asset, fair value, measurement input | 0.095 | 0.095 | |||||||||
| Developed product rights for Auryxia | |||||||||||
| Finite-Lived Intangible Assets [Line Items] | |||||||||||
| Intangible assets, estimated useful life | 9 years | 6 years | 7 years | 6 years | |||||||
| Amortization expense | $ 36,000,000 | $ 36,000,000 | $ 32,600,000 | ||||||||