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LIABILITY RELATED TO SETTLEMENT ROYALTIES, WORKING CAPITAL FUND LIABILITY AND LIABILITY RELATED TO SALE OF FUTURE ROYALTIES - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended |  |  |  |  |  |  |  |  |
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Feb. 25, 2021 | Feb. 28, 2022 | May 31, 2017 | Mar. 31, 2025 | Mar. 31, 2024 | May 31, 2028 | May 31, 2027 | May 31, 2026 | Jul. 01, 2025 | Dec. 31, 2024 | Jul. 10, 2024 | May 03, 2024 | Mar. 18, 2022 | Feb. 18, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, issued (in shares) |  |  |  | 261,644,590 |  |  |  |  |  | 224,848,992 |  |  |  |
Annual effective interest rate |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ (7,770) | $ (2,498) |  |  |  |  |  |  |  |  |
Refund liability to customer, amortization of discount |  |  |  | 1,100 | 700 |  |  |  |  |  |  |  |  |
Refund liability to customer, amortization of deferred gain |  |  |  | 1,000 | 900 |  |  |  |  |  |  |  |  |
Maximum annual royalty payout capacity | $ 13,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty payment to be received once maximum annual royalty payout has been paid | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum aggregate royalty payout capacity | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Liability related to sale of future royalties, net of current portion | $ 44,800 |  |  | $ 51,549 |  |  |  |  |  | $ 52,066 |  |  |  |
Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) |  | $ 5.00 |  |  |  |  |  |  |  |  |  |  |  |
Number of shares sold in offering (in shares) |  | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Aggregate net proceeds from offering |  | $ 20,000 |  |  |  |  |  |  |  |  |  |  |  |
Vifor (International) Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual effective interest rate |  |  |  | 41.00% |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ 5,400 | 0 |  |  |  |  |  |  |  |  |
Refund liability to customer, gross |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000 |
Vifor (International) Ltd. | License Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, issued (in shares) |  |  | 3,571,429 |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) |  |  | $ 14.00 |  |  |  |  |  |  |  |  |  |  |
Proceeds from common stock sold |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |
Vifor (International) Ltd. | License |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, remaining performance obligation, profit share percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 66.00%
Deferred revenue |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000
Long-term deferred revenue |  | $ 13,600 | $ 4,700 |  |  |  |  |  |  |  |  |  |  |
Transaction price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 43,300
Refund liability to customer, interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |
Vifor (International) Ltd. | License | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term deferred revenue |  |  |  | 18,300 |  |  |  |  |  |  |  |  |  |
CSL Vifor |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tiered royalty payments as a percentage of net sales |  |  |  |  |  |  |  |  |  |  | $ 450,000 |  |  |
Refund liability to customer, interest rate |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |
CSL Vifor | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty payments |  |  |  |  |  |  |  |  | $ 40,000 |  |  |  |  |
Royalty true-up payments |  |  |  |  |  | $ 40,000 | $ 20,000 | $ 10,000 |  |  |  |  |  |
CSL Vifor | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tiered royalty payments as a percentage of net sales |  |  |  |  |  |  |  |  |  |  | $ 450,000 |  |  |
Tiered royalty payments, percentage |  |  |  |  |  |  |  |  |  |  |  | 14.00% |  |
CSL Vifor | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tiered royalty payments, percentage |  |  |  |  |  |  |  |  |  |  |  | 8.00% |  |
Vifor International Limited, First Investment | License |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term deferred revenue |  |  |  | 4,700 |  |  |  |  |  |  |  |  |  |
Vifor International Limited, Second Investment | License |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term deferred revenue |  |  |  | 13,600 |  |  |  |  |  |  |  |  |  |
HealthCare Royalty Partners IV, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for royalties |  |  |  | $ 500 | $ 400 |  |  |  |  |  |  |  |  |

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