Basis of Presentation and Significant Accounting Policies - Purchased Receivables, Income Taxes, and Share Repurchases (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Basis of Presentation and Significant Accounting Policies
Purchased receivables included in royalty and commercial payment receivables, Cost recovery method	$ 1.0	$ 0.0
Purchased receivables included in royalty and commercial payment receivables, Effective interest rate method	8.3	$ 0.0
Income tax penalties or interest charged	0.0
Treasury stock (in dollars)	$ 0.0

No definition available.

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- Definition

Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481549/505-30-45-1

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

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- Definition

Amount, after allowance, of receivables related to income from purchased receivables under the cost recovery method due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

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- Definition

Amount, after allowance, of receivables related to income from purchased receivables under the effective interest rate method due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

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