Royalty Purchase Liability - Schedule of Common Stock Warrants (Details)	3 Months Ended
Mar. 31, 2022 $ / shares shares
New Milestone Warrant
Class of Warrant or Right [Line Items]
Class of warrant, shares issued \| shares	293,686
Exercise price \| $ / shares	$ 13.62
Initial Exercise Date	Jun. 07, 2021
Expiration Date	Jun. 06, 2027
Fourth Milestone Warrant
Class of Warrant or Right [Line Items]
Class of warrant, shares issued \| shares	256,975
Exercise price \| $ / shares	$ 13.62
Initial Exercise Date	Jul. 19, 2021
Expiration Date	Jul. 18, 2027

Date the warrants or rights are exercisable, in YYYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

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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

No definition available.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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