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DISTRIBUTION AGREEMENT WITH TEIJIN PHARMA LIMITED - Additional Information (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 01, 2019 JPY (¥) | Oct. 31, 2017 | Jun. 30, 2019 USD ($) | Dec. 31, 2023 | Dec. 31, 2017 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Term of distribution agreement |  | 7 years 6 months |  |  |
Reimbursement of rate per treatment session | ¥ | ¥ 12,000 |  |  |  |
Distribution agreement, renewal period |  | 2 years |  |  | 2 years
Distribution term agreement |  |  |  | The term of the distribution agreement will be automatically extended for two years unless either party gives the other party at least two years’ prior written of notice of non-renewal, except that the Company cannot decline to renew the agreement if Teijin has purchased 100% of its sales forecasts over the term of the agreement. |
Teijin | Distribution Agreement |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Agreement expiry date |  |  |  |  | Mar. 31, 2027
Extended term of agreement |  |  |  |  | 2 years
Related party purchased percentage of sales forecasts over agreement term. |  |  |  |  | 100.00%
Upfront Payment |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Payment received |  |  |  |  | $ 750
Milestone Payment |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Payment received |  |  | $ 700 |  | $ 2,000

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479402/808-10-50-1 + Details
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- Definition Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References No definition available. + Details
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