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COMMERCIAL PARTNERS AND OTHER AGREEMENTS - Costs and Reserves (Details) - Nuance Biotech Co. Ltd. [Member] [Member] - USD ($) $ in Millions | Jul. 20, 2018 | Jun. 19, 2018
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Maximum [Member] | Achievement of Development and Commercial Milestones [Member] |  |
Collaborative Arrangement, Milestone Payments to be Received |  | $ 60.0
Subsequent Event [Member] |  |
Collaborative Arrangement, Upfront Payment Received | $ 3.0 |

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