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- Definition

Deferred Revenue Separate Material Options Right.

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- Definition

Development milestone and settlement upfront fee recognized as research and development expense.

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- Definition

Milestone payment to be paid by company upon specified research milestone achievement.

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Obligations due to development, regulatory, commercial milestone and up-front royalty payments.

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- Definition

Payment for option exercise.

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- Definition

Settlement expense.

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- Definition

Stock Options Exercised or Expired.

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- Definition

Sublicense payment.

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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.

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No definition available.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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License and Collaboration Agreements - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Revenue		$ 141,839	$ 111,344	$ 266,765	$ 211,792
BioMarin Pharmaceutical, Inc. [Member] \| Research and Development Expense [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Settlement charge				10,000
Collaborative Arrangement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Payment for option exercise				$ 237,000
Stock options exercised or expired				0
Development Milestone and Upfront Fee Recognized as Research and Development Expense		31,700	12,800	$ 45,700	21,300
Collaborative Arrangement \| Maximum [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Contingent research milestone payments				11,000
Development Milestone and Settlement Upfront Fee Recognized as Research and Development Expense		3,900,000		3,900,000
Collaborative Arrangement \| Roche
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Revenue		22,300	26,000	44,300	39,200
Deferred Revenue		708,500		708,500
Deferred Revenue, Current		89,200		89,200
Deferred Revenue Separate Material Options Right		485,000		485,000
Research and development expense		18,000	$ 8,900	31,400	$ 25,400
Collaboration Receivable		17,700		$ 17,700
Nationwide License Agreement [Member] \| NationWide Children Hospital [Member] \| Subsequent Event [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Sublicense payment	$ 38,000
Nationwide License Agreement [Member] \| NationWide Children Hospital [Member] \| Research and Development Expense [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Sublicense payment		$ 28,700				$ 9,300