Collaborative arrangement additional potential milestone payments receivable.

No definition available.

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- Definition

Amount of payment(s) received under a collaborative arrangement.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

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

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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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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Collaborative Arrangement - Additional Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total revenue	$ 22,543,000	$ 26,883,000	$ 22,822,000	$ 22,616,000	$ 30,816,000	$ 24,344,000	$ 22,676,000	$ 22,241,000	$ 94,864,000	$ 100,077,000	$ 81,336,000
Abbott Agreement [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaborative arrangement payment received									45,800,000
Collaborative arrangement additional potential milestone payments receivable	45,000,000								45,000,000
Total revenue									12,000,000.0	13,500,000	4,400,000
Upfront and milestone fee payment included in deferred revenue	15,900,000				17,100,000				15,900,000	17,100,000
Collaboration revenue recognized included in balance at beginning of period									5,000,000.0	8,400,000
Abbott Agreement [Member] \| Contract Life to Date [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total revenue									29,900,000
Abbott Agreement [Member] \| Upfront Payment [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaborative arrangement payment received											$ 25,000,000
Abbott Agreement [Member] \| Milestone Payment [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaborative arrangement payment received		$ 10,800,000			$ 10,000,000				10,800,000	$ 10,000,000
Abbott Agreement [Member] \| Clinical Trial Report Milestone [Member] \| TRANSCEND Clinical Trial [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaborative arrangement additional potential milestone payments receivable	15,000,000								15,000,000
Abbott Agreement [Member] \| PMA Milestone [Member] \| TRANSCEND Clinical Trial [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Collaborative arrangement additional potential milestone payments receivable	$ 30,000,000								$ 30,000,000