Financial assets:

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- Definition

Financial liabilites:

+ References

No definition available.

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- Definition

Royalty rights

+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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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

Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Fair Value Measurements (Financial Instruments Measured at Fair Value on a Recurring Basis) (Detail) - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Aug. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	$ 0	$ 0	$ (858)
Financial assets:
Warrants and Rights Outstanding		14,152
Royalty rights - at fair value		266,196
Assets, Fair Value		493,879
Financial liabilites:
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	(4,350)
Money Market Funds [Member]
Financial assets:
Cash and Cash Equivalents, Fair Value		131,264
Equity Securities [Member]
Financial assets:
Available for Sale Securities, Fair Value		82,267
Royalty right [Member]
Financial liabilites:
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	$ (4,350)
Fair Value Level 1 [Member]
Financial assets:
Warrants and Rights Outstanding		0
Royalty rights - at fair value		0
Assets, Fair Value		213,531
Fair Value Level 1 [Member] \| Money Market Funds [Member]
Financial assets:
Cash and Cash Equivalents, Fair Value		131,264
Fair Value Level 1 [Member] \| Equity Securities [Member]
Financial assets:
Available for Sale Securities, Fair Value		82,267
Fair Value Level 2 [Member]
Financial assets:
Warrants and Rights Outstanding		14,152
Royalty rights - at fair value		0
Assets, Fair Value		14,152
Fair Value Level 2 [Member] \| Money Market Funds [Member]
Financial assets:
Cash and Cash Equivalents, Fair Value		0
Fair Value Level 2 [Member] \| Equity Securities [Member]
Financial assets:
Available for Sale Securities, Fair Value		0
Fair Value Level 3 [Member]
Financial assets:
Warrants and Rights Outstanding		0
Royalty rights - at fair value		266,196
Assets, Fair Value		266,196
Fair Value Level 3 [Member] \| Money Market Funds [Member]
Financial assets:
Cash and Cash Equivalents, Fair Value		0
Fair Value Level 3 [Member] \| Equity Securities [Member]
Financial assets:
Available for Sale Securities, Fair Value		$ 0